Showing posts with label Bitcoin. Show all posts
Showing posts with label Bitcoin. Show all posts

Friday, December 8, 2017

8/12/17: Coinbase to Bitcoin Flippers: You Might Flop


If you need to have a call to 'book profit', you are probably not a serious investor nor a seasoned trader. Then again, if you are 'into Bitcoin' you are probably neither anyway. Still, here is your call to "Go cash now!" https://blog.coinbase.com/please-invest-responsibly-an-important-message-from-the-coinbase-team-bf7f13a4b0b1?gi=f51a107183c9.

In simple terms, Coinbase is warning its customers that "access to Coinbase services may become degraded or unavailable during times of significant volatility or volume. This could result in the inability to buy or sell for periods of time." In other words, if there is a liquidity squeeze, there will be a liquidity squeeze.

Run.


So a couple of additions to this post, on foot of new stuff arriving.

One: Bloomberg-Businessweek report (https://www.bloomberg.com/news/articles/2017-12-08/the-bitcoin-whales-1-000-people-who-own-40-percent-of-the-market) that some 40% of the entire Bitcoin supply is held by roughly 1,000 'whales'. Good luck seeing through the concentration risk on top of the collusion risk when they get together trading.

Two: Someone suggested to me that ICOs holding Bitcoin as capital reserves post-raising are part problem in the current markets because by withdrawing coins from trading, they are reducing liquidity. Which is not exactly what is happening.

Suppose an ICO buys or raises Bitcoins and holds these as a reserve. The supply of Bitcoin to the market is reduced, while demand for Bitcoins rises. This feeds into rising bid-ask spreads as more buyers are now chasing fewer coins with an intention to buy. Liquidity improves for the sellers of the coins and deteriorates for the buyers. Now, suppose there is a sizeable correction to the downside in Bitcoin price. ICOs are now having a choice - quickly sell Bitcoin to lock in some capital they raised or ride the rollercoaster in hope things will revert back to the rising price trend. Some will choose the first option, others might try to sit out. Those ICOs that opt to sell will be selling into a falling market, increasing supply of coins just as demand turns the other way. Liquidity for sellers will deteriorate. Prices will continue to fall. This cascade will prompt more ICOs to liquidate Bitcoins they hold, driving liquidity down even more. Along the falling prices trend, all sellers will pay higher trading costs, sustaining even more losses. Worse, as exchanges struggle to cover trades, liquidity will rapidly evaporate for sellers.

It is anybody's guess if liquidity crunch turns into a crisis. My bet - it will, because in quite simple terms, Bitcoin is already relatively illiquid: it takes hours to sell and spreads on trading are wide or more accurately, wild. Security of trading is questionable, as we have recently seen with https://www.fastcompany.com/40505199/bitcoin-heist-adds-77-million-to-hacked-hauls-of-15-billion, and the market is full of speculation that some of these 'heists' are insider jobs with some exchanges acting as pumps to suck coins out of clients' wallets. The rumours might be total conspiracy theory, but conspiracy theories turn out to be material in market panics.

Saturday, December 2, 2017

2/12/17: Bitcoin Craze Heads for the Moon


Just about 10 days ago, I wrote about the Bitcoin being a bubble. And since then, few things happened:

  1. The bubble has now gone into public euphoria stage, witnessed by an ever-growing number of discounted brokerage platforms actively selling access to Bitcoin markets with leverage in excess of 100:1.
  2. The bubble has gone from hyperbolic to hyperbolic+ trajectory, adding a massive degree of volatility to the trend. Earlier this week, Bitcoin managed to drop some 21 percent within a day and then go back above pre-drop levels within less than 24 hours. The confirmation phase is now complete with buy-on-the-dip 'investors' triggering waves of herding.
  3. And the hype has gone institutional. In my post, I said "This is not just a shoe-shine-boy moment, folks. It is white-powder-under-the-nose-and--empty-bottles-of-vodka-on-the-floor hour for high school dropouts with cash to burn." Yeah, read this from as always excellent Matt Levine of (not always excellent) Bloomberg View: "One of the presenters at the conference... “Decentralization will change more in our lives over the coming years than possibly any other technological shift we’ve seen,” he says, likening the crypto rush to the Reformation. He describes building anarcho-capitalist city-states on the back of the blockchain. “If you’re going to built a new city, you’re not going to have the DMV – we don’t like the DMV,” he says at one point. Later: “We can actually tokenize the moon with a startup society.” When I ask him about the SEC’s role in the space, he waves the question off as irrelevant. “Under crypto-anarchy,” he explains, “we’ll get to determine the government that we want.”" Nasa should worry now, not just the SEC, for one day, the International Space Station will have to be flying through clouds of Bitcoins spread around space by the Moononizers of anarcho-capitalist-libertarian variety who securitized their moonhomes using blockchain contracts enforceable only under the anarchy laws.
Yes, bottles of vodka are empty now. 'Investors' have moved onto magic mushrooms.


Tuesday, November 21, 2017

20/11/17: Bitcoin: an Unknowable Bubble?


There is a much-discussed in the crypto-sphere chart making rounds these days, plotting Bitcoin price dynamics against the historical bubbles of the past:


The chart is striking. Albeit simplistic. See Note 1 below for a technical argument on the chart timing.

On price dynamics alone, Bitcoin looks like a sure bubble - a disaster waiting to happen. But Bitcoin dynamics are basically not suited for any empirical analysis of any significant accuracy.

As noted by some commentators, Bitcoin had numerous 80-90% and larger drawdowns in the past (given its immense volatility). It keeps coming back from these. Some claim this to be the evidence that Bitcoin it not a bubble. Which is neither here nor there: bubbles are generated by exuberant expectations of investors, not by actual parameters of price processes. Causality does not flow from dynamics to bubbles, but the other way around. So to identify a bubble, one needs to identify exuberance. See Note 2 below for more on 80% drawdowns.

In the case of Bitcoin fans, there is clearly such.

No investor or serious analyst has been able to provide a fundamentals-based valuation model for Bitcoin.

A disclosure in order here: myself and a graduate student of mine have looked at the fundamental modelling for Bitcoin over the summer. We found no tangible relationship between any economic or financial parameters tested and Bitcoin price dynamics. In another piece of research, myself and two co-authors are currently looking at empirical dynamic and fractal properties of Bitcoin. Again, we finding nothing consistent with a behaviour of an asset with fundamentals-derived valuations.

Absence of evidence is not the same as evidence of absence. But, taken together with the general lack of credible fundamentals-linked modelling of the crypto-currency, this means that, at this point in time, Bitcoin price can be potentially driven solely by… err… expectations held by its enthusiasts, plus the incentives by the predominantly China-based investors to avoid extreme risks of capital controls and expropriations. If so, both drivers would make it a speculative bubble.

The only quasi-fundamentals-linked argument for Bitcoin has been the blockchain one - the promise of Bitcoin serving as a key tool for data aggregation, recording and transmission. This argument, however, no longer holds. Blockchain technology has migrated from public blockchains, like Bitcoin, to either open blockchains, like Ethereum or, increasingly more frequently, private blockchains. It is the latter that currently hold the promise to serve as viable platforms for data economy.

As a libertarian, I should like a private currency system that supports anonymity of transactions. As an economist, I should like the innovative nature of Bitcoin. And, put simply, I do. Both.

But as an investor, I do not have the stomach for Bitcoin’s valuations and volatility, as well as for its higher moments behaviour (in particular worrying are kurtosis, co-skews and co-kurtosis, which severely complicate empirical dynamics analysis, see Note 3 below). And I have even less enthusiasm for the crypto market that is sustained increasingly by undertakings, like BitMEX - a purely speculative platform trading some $35 billion in Bitcoin derivatives with leverage up to x100 to the amateur speculators who, put frankly, have zero idea what they are buying and at what price. The vast majority of Bitcoin investors have no clue what a butterfly option looks like and how it can be valued. And the vast majority of financial markets analysts and professionals won’t be able to price a butterfly strategy for Bitcoin, given its painfully twisted moments. Yet, within a month of starting trading, BitMEX reached 1/3 of the market capitalisation of Bitcoin. This is not just a shoe-shine-boy moment, folks. It is white-powder-under-the-nose-and--empty-bottles-of-vodka-on-the-floor hour for high school dropouts with cash to burn.

Another worrying issue with Bitcoin is the argumentation of its main supporters.

This ranges from the cognitively biased “you don’t know anything about the Bitcoin” to “Bitcoin is scarce & limited in supply” to “Bitcoin is a promise of liberating the masses from the oppression of the Central Bankers”.

The first sort of argument exhibits not just Jurassic ignorance of logic, but also a gargantuan dose of arrogance. Repeated sufficiently enough, it signifies the absurd degree of exuberance of investors’ expectations.

The second argument is patently false. Bitcoin has undergone splits, and engendered dozens of other cryptos, with unlimited supply of such into the future. Bitcoin itself is divisible ad infinitum and, with forks, its supply is potentially unlimited. Worse, Bitcoin rests on man-made mathematical foundations. Which means it has no physical bound or constraint. Anything man-made (and even more so, anything mathematically derived) is, by definition, fungible and axiomatic. Just because to-date no one cracked the code to alter Bitcoin mid-stream or drain blockchain-held information does not mean that in the future such a code cannot be written. So hold your horses: gold is physically limited in quantity (even though in the Universe, it is not as scarce as it is on Earth, which makes long term supply constraint on gold potentially non-binding). Bitcoin is limited by our capacity to alter the underlying code defining it. Anyone thinking of an algorithm as a 'law' needs to go back to Godel's mathematics.

Finally, there is an argument of ‘liberation’. Bitcoin value is only sustained as long as it remains convertible into goods, services and other currencies. This means that Bitcoin cannot remain a government- regulation-free asset, as long as its popularity as a medium of exchange and a vehicle for store of value grows. Which means that in the medium terms (3 years or so?), Bitcoin will either cease to be, or cease to be anonymous. All protection from the dictate of the Central Bankers will be gone.  Benign tolerance of Bitcoin by some regulators can quickly turn into outright prohibition on trading - as current and past examples of China, Vietnam, Nigeria, Colombia, Taiwan, Ecuador, Bangladesh, Kyrgyzstan and Bolivia, Russia, and Thailand suggest. Evolution of cybersecurity measures and regulatory and supervisory tools, including their spread into cryptocurrencies domain will only increase effectiveness of such measures into the future. So, unless you are planning to live in a libertarian paradise, where legal norms of other states do not apply, good luck committing much of your wealth to Bitcoin as a safe haven for oppressive or coercive actions of the nation states.

Worse, anyone claiming that Bitcoin is a hedge against inflation fails to understand how modern markets work. Again, to increase in value, Bitcoin requires higher rates of adoption. Higher rates of adoption bring about higher rates of asset instrumentation (see above for BitMIX). Higher rates of instrumentation and adoption, taken together, imply higher holdings of Bitcoin by institutional and diversified portfolio investors. So far so good? Right, now the kicker: these holdings imply greater, not lower, positive correlations between Bitcoin and other asset classes in shock-experiencing markets. That's right, dodos: Goldman holdings of Bitcoin are correlated to liquidity supply in general markets, because if such liquidity starts evaporating, Goldman will sell Bitcoin to plug holes in other instruments. Sell-off in the markets can trigger sell-off in Bitcoin. Now, another kicker: Bitcoin is currently less liquid than any major asset class (see extreme volatility of pricing across various Bitcoin exchanges). Which means that smart folks at Goldman will be dumping Bitcoin before they dump gold and other assets. Hipsters hugging their laptops will be the last to wake up to this momentum (behavioural evidence suggests, they might actually buy into falling Bitcoin in hope of speculatively gaining on a bounce, which, incidentally, can explain why large drawdowns in Bitcoin can turn so fast into upward trends).

The tricky bit about Bitcoin is that its enthusiasts need to learn to live in the real world first. Until they do, Bitcoin will continue its upward path, and this process can go one for quite a while, depending on the supply of cash in the markets for Bitcoin. Once they are taught a sufficient lesson, however, the rest of us will be learning the long term fundamentals valuations of Bitcoin. I, for now, have no idea what these valuations might be.

So Bitcoin, then. A bubble or not? If you ignore the arguments that attempt to justify its valuations, it looks like one, albeit with dynamics that are very hard to interpret. If you listen to them, it looks that way even more, with more confidence in the arguments bogus nature. Draw your own final conclusions.



Note 1: In defence of the chart above, without validating its implied conclusions: the chart plots Bitcoin evolution from 3 years ago through today. This starting point makes sense. Until mid-2014, Bitcoin was extremely obscure, hype-only investor vehicle, with volatility so off the charts, any analysis of its dynamics was futile (I know, I did such analysis and presented the results in my talk at Bloomberg two years ago). Those us who do research in finance generally and routinely disregard the first 3-4 years of existence of Bitcoin for exactly that reason.

Note 2:  A note due here: Bitcoin's returns from 80-90% drawdowns is not a solid evidence of the crypto-currency not being a bubble, because they are in line with Bitcoins' overall massive volatility. In other words, a valid comparative for these drawdowns relative to other asset classes is not "an 80% drawdown in  Bitcoin ~ an 80% drawdown in stocks", but "an 80% drawdown in Bitcoin ~ an 8% drawdown in stocks". Apples to apples. Dust to dust.

Note 3:  Interesting Elliott Wave analysis of Bitcoin dynamics here: https://atozforex.com/news/29-september-bitcoin-elliott-wave-analysis/ and here https://www.cnbc.com/2017/07/20/bitcoin-bubble-dwarfs-tulip-mania-from-400-years-ago-elliott-wave.html, although I am not convinced Bitcoin price trends are established enough for this technique to work.

Saturday, October 14, 2017

14/10/17: Bitcoin's Rise: Bentleys in Vancouver?


Two charts highlight the recent dynamics of #Bitcoin rise back to the top of the newsflow:


and decomposing the above:


As a fan of blockchain technology (but not a fan of Bitcoin as an asset), here are some notes of worry:

  • The rise has been exponential to-date, while
  • The volatility has been absolutely atrocious (albeit weaker than volatility in Ehterium and Ripple, two other top-3 cryptos); and
  • The periods from peak to next peak are getting more and more compressed
All of which should make you pause and wonder: what fundamentals, if any, can account for the rise of Bitcoin - a question that many tried to answer and few succeeded. As a disclaimer, I have a couple of papers forthcoming on this in the next month or so. And as a taster for the disclaimer, both papers show absolutely no fundamental drivers capable of explaining the rise of Bitcoin from its first day of trading through the end of 1H 2017. The dynamics of Bitcoin are pure memory (Hurst process) and as such contain no bearing with any real asset in the Universe. 

Put differently, Bitcoin is a hedge against things that cannot be hedged in the markets, most notably, the risk of state-administered expropriation / capital controls in... err... China. So if you want an asset that can (at a staggering risk-premium and transaction cost) hedge your Shanghai property yields against Beijing's reluctance to allow you offshore your cash into a Bentley parked in Vancouver, be my guest. If you have no such need, why, sit back and enjoy the wild ride and gyrations of the crypto to USD/BTC 6,000 and beyond... you can do the latter by playing some Russian roulette speculating on BTC, but do avoid becoming a hostage to St. Petersburg Paradox, should a correction pop the frothy top here and there. In other words, should you want to speculate on Bitcoin, by all means - do. But mind the tremendous risks.

Stay tuned for the aforementioned research papers coming soon.

Monday, May 22, 2017

22/5/17: The Economist Calling a Bubble in Cryptos? Why not...


A very interesting chart from The Economist from last week providing evidence on rapid evolution of cryptocurrencies:
Source here

In basic terms, the value of cryptocurrencies market has risen to over USD60 billion, tripling within less than 6 months of 2017, while trading across cryptocurrencies markets has increased tenfold to ca USD 2 billion per day (average) and 38 initial coin offers have been launched in 2017 so far.

What is also notable is that Ripple is now on par with Ethereum and their combined valuation is now a challenger to Bitcoin.

Uncharacteristically for The Economist,  the publication that never sees a bubble until it pops is calling a bubble in the cryptos. Perhaps due to a freshly acquired consciousness of empiricism or due to the publication's innate distaste for anything not-state-centric. Still, given the exponential growth so far this year, cryptos are overdue a major correction. When and how will it be triggered is anyone's guess.

Tuesday, March 14, 2017

13/3/17: Bitcoin v Gold: Volatilities and Correlation


On foot of the previous post, a reader asked me for some analysis of comparatives between Bitcoin volatility and Gold price volatility. It took some time to get to the answer. One of the reasons is that Bitcoin is traded continuously, while gold prices are listed for specific markets trading dates. So it takes some time to reconcile two data sets.

Here is the analysis. Starting with daily returns volatilities for log-log returns:


Several things are obvious from the above chart:

  1. Overall Bitcoin price volatility is magnitudes greater than volatility of gold prices almost always. Historical standard deviation in daily returns is 2.663% and Gold price (log daily returns) volatility is 0.466%, which means that historically, gold daily returns are less volatile than Bitcoin daily returns by a more than a factor of 5. 
  2. There are, broadly speaking three key periods of Bitcoin volatility: the period from September 2011 through December 2012, when volatility was extreme and declining, the period from January 2013 through February 2015, when volatility in Bitcoin was characterised by severe spikes and elevated base, and the period from March 2015 on, when both the spikes in volatility and the base of volatility abated. These three periods are associated with the following comparatives between gold volatility and Bitcoin volatility: period through December 2012: gold daily returns volatility 0.520% against Bitcoin daily returns volatility of almost 6 times that at 3.00%; period from January 2013 through February 2015, when Bitcoin returns volatility (3.27%) was almost 7.5 times gold returns volatility (0.479%), and the current period from March 2015, where Bitcoin daily returns volatility (1.421%) was over 3 times daily returns volatility for gold (0.412%). Note: these are log-log returns, so much of extreme volatility is smoothed out and this benefits the Bitcoin.
  3. There is a long-term trend difference between gold returns volatility and Bitcoin returns volatility, as shown by polynomial (power 6) trend lines for both. In fact, even in terms of trend, Bitcoin is much more volatile than gold and Bitcoin's volatility is less stable than volatility of gold. 
In very simple terms, Bitcoin volatility is vastly in excess of Gold's volatility, albeit the former is starting to moderate in more recent years.

Now, for the last bit of observations. I also mentioned that Bitcoin is distinct from Gold in terms of its financial properties. And guess what, I did not provide any evidence. Well, here it is. Bitcoin returns and Gold returns are not correlated, or in other words, they neither co-move with each other nor countermove against each other. Here's a chart to prove this:


Average 30-days running correlation for Bitcoin and gold in terms of daily log-log returns is 0.03025 historically, which is statistically indifferent from zero. Across the three periods of Bitcoin volatility structure (defined above), average correlation between Bitcoin and gold log-log returns was 0.0147, 0.0182 and 0.0529 respectively. All of these are statistically indifferent from zero. In history of the Bitcoin, there were only 7 occasions on which daily returns were correlated positively with gold price with correlation in excess of 0.5. and 5 with negative correlation in excess of -0.5 in absolute value None with correlation in excess of 0.65 in absolute value for either positive or negative correlations. 

Bitcoin comparatives to gold hold about as much water as a colander hit by a shrapnel shot.

Sunday, March 12, 2017

12/3/17: Bitcoin Pop: Nothing too Dramatic by Historical Comparatives


Few days back, I posted a quick note about the erroneous nature of Bitcoin-Gold comparatives. And yesterday, we had one of those events that highlights the same.

In summary of the event, SEC rejected an application for a Bitcoin ETF.  And Bitcoin crashed. Inter-day volatility shot up through the roof. Which would have been bad enough, except it is the norm for Bitcoin


You can see just how unsurprising the current volatility is for the BTC, consider the following charts:





Pretty much by every metric of volatility, Bitcoin's latests wobble is minor, despite it being dramatic enough to set @Reuters and @Bloomberg folks all hopping with excitement. Thing is, folks, Bitcoin's volatility is in the league of financial widow-makers.

Friday, March 3, 2017

3/3/17: Gold vs Bitcoin: Prices vs Values


Marketwatch reported earlier that Bitcoin is currently being priced at above the price of gold in USD terms: http://www.marketwatch.com/story/bitcoin-is-now-worth-more-than-an-ounce-of-gold-for-the-first-time-ever-2017-03-02?siteid=bnbh

The comparative is somewhat silly, because, as Marketwatch article notes, Bitcoin market cap is much much smaller than that for gold, which implies that any valuation of Bitcoin to-date incorporates a hefty liquidity risk premium compared to gold. In addition - unmentioned by the Marketwatch - Bitcoin lacks key financial properties of gold, including:

  1. Established safe haven properties: gold acts as a safe haven instrument against large scale or systemic risks. Bitcoin is yet to establish such property with any conviction. There are some indications that Bitcoin may be seen in the markets as a hedge against some systemic risks, e.g. capital controls in China, but this property is yet to be fully confirmed in data. Beyond such confirmation, there is no evidence to-date that Bitcoin acts as a safe haven for other systemic risks (e.g. sovereign debt crisis risks in the Euro area, or political risks in the EU, etc).
  2. Hedging properties: Bitcoin shows no hedging relationship to key asset classes, in contrast to gold.
The above points mean that in addition to liquidity risks, Bitcoin price is also factoring in premium for lacking the broader safe haven and hedging properties.

While the continued evolution of Bitcoin is a great thing to watch and take part in, immediate valuations of Bitcoin are subject to severely concentrated risks, including the currently extremely elevated risk of Bitcoin demand being severely skewed to China (http://trueeconomics.blogspot.com/2017/01/18117-bitcoin-demand-its-chinese-tale.html) and the supply and legal rights issues with Bitcoin. Hence, as it says on the tin: the comparative to gold is silly, even if entertaining.

Wednesday, January 18, 2017

18/1/17: Bitcoin Demand: It's a Chinese Tale


Bitcoin demand by geographic location of trading activity:


H/T for the chart to Dave Lauer @dlauer


It shows exactly what it says: Bitcoin is currently driven by safe haven instrument (and not as a hedge) against capital controls. Which implies massive expected price and volumes volatility in the future, wider cost margins and artificial support for demand in the near term.


Tuesday, January 17, 2017

17/1/17: Economics of Blockchain


One of the first systemic papers on economic of blockchain, via NBER (http://www.nber.org/papers/w22952) by Christian Catalini and Joshua S. Gans, NBER Working Paper No. 22952 (December 2016).

In basic terms, the authors see blockchain technology and cryptocurrencies influencing the rate and direction of innovation through two channels:

  1. Reducing the cost of verification; and 
  2. Reducing the cost of networking.



Per authors, for any "exchange to be executed, key attributes of a transaction need to be verified by the parties involved at multiple points in time. Blockchain technology, by allowing market participants to perform costless verification, lowers the costs of auditing transaction information, and allows new marketplaces to emerge. Furthermore, when a distributed ledger is combined with a native cryptographic token (as in Bitcoin), marketplaces can be bootstrapped without the need of
traditional trusted intermediaries, lowering the cost of networking. This challenges existing
revenue models and incumbents's market power, and opens opportunities for novel approaches to
regulation, auctions and the provision of public goods, software, identity and reputation systems."

A bit more granularly, per authors,

  • "Because of how it provides incentives for maintaining a ledger in a fully decentralized way, Bitcoin is also the first example of how an open protocol can be used to implement a marketplace without the need of a central actor." In other words, key feature of cryptocurrencies and blockchain is that it removes the need to create a central verification authority / intermediary / regulator or repository of data. The result is more than the cost reduction (focus of the Catalini and Gans paper), but the redistribution of market power away from intermediaries to the agents of supply and demand. In other words, a direct streamlining of the market away from third parties power toward the direct power for economic agents.
  • "Furthermore, as the core protocol is extended (e.g. by adding the ability to store documents through a distributed ledger-storage system), as we will see the market enabled by a cryptocurrency becomes a  flexible, permission-less development platform for novel applications." Agin, while one might focus on reductions in the direct costs of innovation in that context, one cannot ignore the simple fact that blockchain is resulting in reduced non-cost barriers to innovation, further reducing monopolistic market power (especially of intermediaries and regulators) and diffusing that power to innovators.

So what are the implications of this view of economics of blockchain? "Whereas the utopian view has argued that blockchain technology will affect every market by reducing the need for intermediation, we argue that it is more likely to change the scope of intermediation both on the intensive margin of transactions (e.g., by reducing costs and possibly influencing market structure) as well as on the extensive one (e.g., by allowing for new types of marketplaces)." So far, reasonable. Intermediation will not disappear as such - there will always be need for some analytics, pricing, management etc of data, contracts and so on, even with blockchain ledgers in place. However, the authors are missing a major point: blockchain ledgers are opening possibility to fully automated direct data analytics and AI deployment on the transactions ledgers. In other words, traditional forms of intermediation (for example in the context of insurance contract transactions, those involving data collection, data preparation, risk underwriting, contract pricing, contract enforcement, contract payments across premia and payouts, etc) all can be automated and supported by live data-based analytics engine(s) operating on blockchain ledgers. If so, the argument that the utopian view won't materialise is questionable.

The paper is worth reading, for it is one of the early attempts to create some theoretical framework around blockchain systems. Alas, my gut feeling is that the authors are failing to fully understand the depth of the blockchain technology. 

Thursday, November 10, 2016

9/11/16: Bitcoin vs Ether: MIIS Students Case Study


Following last night's election results, Bitcoin rose sharply in value, in line with gold, while other digital currencies largely failed to provide a safe haven against the extreme spike in markets volatility.

In a recent project, our students @MIIS have looked at the relative valuation of Bitcoin and Ether (cryptocurrency backing Ethereum blockchain platform) highlighting

  1. Fundamental supply and demand drivers for both currencies; and
  2. Assessing both currencies in terms of their hedging and safe haven properties
The conclusion of the case study was squarely in line with Bitcoin and Ether behaviour observed today: Bitcoin outperforms Ether as both a hedge and a safe haven, and has stronger risk-adjusted returns potential over the next 5 years.



Monday, October 24, 2016

24/10/16: Hacktivism on the rise? Welcome to the well-predicted future


Given a rising prevalence and impact of the cyber attacks in recent weeks, here are some slides from my February 2016 course notes on ERM with warnings about the same back at the end 2015 - start of 2016:











Saturday, October 22, 2016

22/101/16: Cashless Society: Efficiency 1 : Privacy 0


My comments on the dangers associated with the idea of the 'cashless society' where traditional money is replaced by fully captured (by data flows) and de-privatized electronic accounts: http://www.gold-eagle.com/article/cashless-society-%E2%80%93-risks-posed-war-cash.


Friday, October 16, 2015

16/10/15: Gold and Bitcoin: Adjacency and Hedging Properties


This week, I spoke at a joint Markets Technicians Association and CAIA seminar hosted by Bloomberg, covering two recent research projects I was involved with on the role of Gold and Bitcoin as safe havens and hedges for other assets.

Here are my slides (omitting section division slides):
The first section was based on the following paper: http://www.sciencedirect.com/science/article/pii/S1057521912001226



A caveat to the above, we are seeing increasing evidence that Gold's hedging properties may be changing over time, especially due to increased financialisation of the asset. In this context, it is worth referencing a recent working paper by Brian M. Lucey et al linked here that I also cited at the seminar.




The Bitcoin section is based on a work-in-progress paper with Cormac Ennis: "Is Bitcoin like Gold? Hedging and Safe Haven Properties of the Virtual Currency". The results of presented below should be treated with serious caution as they are extremely preliminary.

Note: we are extending data set to cover longer period, although even with this extension data coverage for Bitcoin is still suboptimal in both duration and quality. Many thanks to the seminar participant for pointing out two key caveats to the overall data coverage:

  1. The 'lumpy' nature of demand around Cypriot banking crisis; and
  2. Potential effects on data quality reported for Bitcoin from a small number of high profile pricing events, such as technical glitches and supply/demand shifts linked to large exchanges-linked events (e.g. MtGox).


 Summarising the two papers findings:

Monday, July 7, 2014

7/7/2014: Bitcoin: Swiss View vs EBA View


Three interesting links relating to Bitcoin:

  1. Swiss authorities position on Bitcoin: http://leaprate.com/2014/06/23470/switzerlands-finma-grants-first-bitcoin-trader-license-to-sebx-deems-bitcoin-a-means-of-payment/
  2. Swiss market view as contrasted by the EU view: http://leaprate.com/2014/07/23926/eu-opposes-switzerland-and-hits-bitcoin-instructs-banks-to-avoid-the-virtual-currency/
  3. EBA position paper: http://www.eba.europa.eu/documents/10180/657547/EBA-Op-2014-08+Opinion+on+Virtual+Currencies.pdf (see page 22 for summary of identified risks)

Wednesday, May 7, 2014

7/5/2014: SEC's Bitcoin Alert... Much ado about little

As reported by FT.com: http://www.ft.com/intl/fastft

SEC (US financial watchdog) issued an "investor alert" relating to Bitcoin, "warning that it could expose investors to fraud and unforeseen risks."

"The alert, …said that both fraudsters and promoters of "high-risk investment schemes" could target Bitcoin users, and cautioned consumers to be wary."

"...today's release was a more general warning, arguing that the virtual currency presented "unique risks" to potential investors. Below are the risks the regulator listed.

1) Not insured. Which we all know...

2) History of volatility. Which I noted earlier… http://trueeconomics.blogspot.ie/2014/02/1722014-is-bitcoin-real-currency.html

3) Government regulation. A new-ish one for the US: "Bitcoins are not legal tender. Federal, state or foreign governments may restrict the use and exchange of Bitcoin." But not so new for global markets, where we've seen bans on BitCoin in the likes of China...

4) Security concerns. Nothing new there...

5) New and developing. Aka: reputational: "As a recent invention, Bitcoin does not have an established track record of credibility and trust. Bitcoin and other virtual currencies are evolving."

Friday, April 11, 2014

10/4/2014: The curse of Long-Term Joblessness


This is an unedited version of my Sunday Times column from March 30, 2014


The unemployment crisis has not passed unnoticed in many households. Ours’ is no exception. Back in 2008, for a brief period of time, both of us found ourselves out of jobs. Thankfully, the spell was very short-lived. Then, in 2011, over a couple of months, I was dusting out my CV for unplanned updates. Just a few days ago, I learned that this year I will not be teaching two of the courses I have taught over the recent years. It's part-time unemployment, again, and this time it is down not to the economic crisis, but to the senile EU 'labour protection' laws.

Yet, spared long-term unemployment spells and able to pick up freelance and contract work, our family is a lucky one. In contrast, many in Ireland today find themselves in an entirely different camp.

Per latest statistics, in February 2014, 180,496 individuals were officially in receipt of Live Register supports for longer than 1 year. Inclusive of those long-term unemployed who were engaged in state-run 'activation programmes' there were around 265,500 people who were seeking employment and not finding one for over a year.

Countless more, discouraged by the zero prospect of securing a new job and not eligible or no longer eligible (having run out of benefits and not qualifying for full social welfare due to total family income) for Live Register supports have dropped out of the workforce and/or emigrated. They simply vanished from the official statistics counts. By latest counts, their numbers can range around 250,000; half of these coming from emigrants who left the country between April 2010 and April 2013.


The numbers above starkly contrast with the boisterous claims by the Government that the economy has created some 61,000 new jobs in 2013. Looking deeper into the new jobs claim, there has been a tangible rise in full-time employment of roughly 27,000 in 2013. Which is still a good news, just not good enough to make a serious dent in the long-term unemployment figures.

Officially, year on year, long-term unemployment fell by 20,900 in Q4 2013. Accounting for those in activation programmes, it was down by around 18,200. Live Register numbers are showing even shallower declines. In 12 months through February 2014, total number of unemployment supports recipients fell 30,807. But factoring in the effect of state training programmes, the decline was only 7,364 amongst those on live register for longer than 1 year. Even more worrisome, since Q1 2011 when the current Government took office, through the first two months of 2014, numbers of the long-term recipients of Live Register support are up by 31,352.

Whichever way you look at the figures, the conclusion is brutally obvious: the problem of long-term unemployment is actually getting worse just as the Government and the media are talking about rapid jobs creation. More ominously, with every month passing, those stuck in long-term joblessness lose skills, aptitude and sustain rising psychological stress.

All of this adds up to what economists identify across a number of studies as a long-term or nearly permanent loss of economic and social wellbeing for workers directly impacted by the long-term unemployment.

However, long-term unemployment also impacts many more individuals than the unemployed themselves.

The lifetime declines in career paths and incomes traceable to the long-term unemployment are also found across the groups related to those without the jobs either via family or via job market connections. Researchers in the US, UK, Germany and Denmark have shown that long-term unemployment for one member of the family leads to a reduction in the lifetime income and pensions cover for the entire household. Studies have also linked long-term unemployment of parents to poorer outcomes in education and jobs market performance for their children.

The adverse effects of long-term unemployment also occur much earlier in the out-of-work spell than our statistics allow for. Whilst we consider the unemployment spells of over 1 year to be the benchmark for long-term unemployment, studies from the US and UK show that the adverse effects kick in as early as six months after the job termination. The US-based Urban Institute found that being out of work for a period in excess of six months is "associated with lower well-being among the long-term unemployed, their families, and their communities. Each week out of work means more lost income. The long-term unemployed also tend to earn less once they find new jobs. They tend to be in poorer health and have children with worse academic performance than similar workers who avoided unemployment. Communities with a higher share of long-term unemployed workers also tend to have higher rates of crime and violence."

This is a far cry from the Irish Government rhetoric on the issue of long term unemployment that paints the picture of relatively isolated, largely personal effects of the problem. Empirical evidence from a number of European countries, as well as the US and Australia shows that these effects are directly attributable to the unemployment spells themselves, rather than being driven by the same causative factors that may contribute to a person becoming unemployed.

Such evidence directly disputes the validity of the Irish Government policies that rely almost entirely on so-called 'activation programmes'. Activation programmes put in place in Ireland during this crisis primarily aim at providing disincentives for the unemployed to stay outside the labour market. Such programmes can be effective in the case where there is significant voluntary unemployment. Instead, in the environment with shortages of jobs and big mismatches between skills and jobs, policy emphasis should be on providing long-term supports to acquire necessary skills and empower unemployed to gradually transition into new professions, enterprises and self-employment.

In part, our state training programmes are falling short of closing the skills gaps that do exist in the labour markets. ICT and ICT support services training, as well as international financial services and professional services skills – including those in sales, marketing, back office operations - are barely covered by the existent programmes.

And where they are present, their quality is wanting. For a good reason: much of our training at best involves instructors who are part-time employed in the sectors of claimed expertise and are too often on the pre-retirement side of their careers, having already fallen behind the curve in terms of what is needed in the markets. In worst cases, training is supplied by those who have no proven track record in the market. Structuring of courses and programmes is done by public sector employees who have little immediate understanding of what is being demanded. We should rely less on the use of training 'specialists' and more on industry-based apprenticeships.

Many practices today substitute applied teaching in a quasi-educational programme with class-based instructions and formal qualification attainment for an hands-on, on-site engagement with actual employers. Evidence collected in Denmark during the 1990s showed that classroom-based training programmes significantly increase individual unemployment rates instead of decreasing them. The reason for this is that attainment of formal or highly specialised qualifications tends to increase individual expectations of wages offers post-programme completion, reducing the range of jobs for which they apply. This evidence in part informed the German reforms of the early 2000s that focused on on-the-job apprenticeship-based skills development. Beyond that, class-based training lacks incentives for self-advancement, such as performance bonuses and commissions.

Self-employment acts as a major springboard to new business formation and can lead to acquisition of skills necessary for full-time employment in the future. Currently, there is little training and support available for people who are considering self-employment. There are, however, strong disincentives to undertake self-employment inherent in our tax systems, access to benefits, and in reduced burden of legal compliance. One possible cross-link between self-employment training and larger enterprises' demand for contractors is not explored in the current training programmes. There are no available shared services platforms that can help self-employed and budding entrepreneurs reduce costs in the areas of accounting, legal and marketing.


Unless we are willing to sustain the indefinitely some 100,000-120,000 in long-term unemployment, we need to rethink of the entire approach to skills development, acquisition and deployment in this country.

Some recent proposals in this area include calls from the private sector employers groups to drop minimum wage. This can help, but in the current environment of constrained jobs supply, it will mean more hardship for families, in return for potentially only marginal gains in employment. Incentivising self-employment and contracting work, by reducing tax penalties will probably have a larger impact. Encouraging, supporting and incentivising real internships and apprenticeships - based on equal pay, commensurable with experience and productivity - will benefit primarily younger workers and workers with proximate skills to those currently in demand. Backing such programmes with deferred tax credits for employers, accessible after, say 3 years of employing new workers, will be a big positive.

In addition we need to review our current system of job-search assistance. For starters, this should be provided by professional placement and search firms, not by State agencies.

Finally, we need to review our current definition of the long-term unemployed to cover all those who are out of the job for longer than 6 months, as well as those who moved into unemployment fro, being self-employed.


This week, former White House economist Alan Krueger identified US long-term unemployment in the US as the "most serious problem" the economy faces right now. He is right. Yet, in the US, long-term unemployed represent roughly one third of all those receiving unemployment assistance. In Ireland, the number currently stands at almost two thirds. The crisis has not gone away. Neither should the drive for reforms.





Box-out: 

With the opening of the first Bitcoin ATMs in Dublin and with growing number of companies taking payments in the world's most popular crypto currency, the crypto-currency became a flavour of the week for financial press in Ireland.

The most hotly debated financial instrument in the markets, it is generating mountains of comments, rumors, as well as serious academic, industry and policy papers. Is it a currency? A commodity, like gold - limited in supply, unlimited in demand? Or a Ponzi scheme?

Few agree as to the true nature of Bitcoin. Bank of Finland denied Bitcoin a status of money, defining it as a commodity of sorts. Norway followed the suit, while Denmark is still deliberating. Sweden classified Bitcoin as 'another asset' proximate to art and antiques, the U.S. Internal Revenue Service - as property.The European Banking Authority is clearly not a fan, having ruled that "when using virtual currency for commercial transactions, consumers are not protected by any refund rights under EU law." In contrast, German authorities recognise Bitcoin as 'a unit of account' as do the French.

Financially, Bitcoin is neither a commodity nor a currency. Bitcoin does not share in any of the main features of commodities. You can't take a physical delivery under an insured contract. You cannot use it to hedge any other asset classes, such as stocks or other currencies. And it is not a currency because it has no issuer who guarantees its value. Nor can it feasibly serve as a unit of accounting and store of value, given extreme levels of price volatility.

Thus, one of the more accurate ways is to think of Bitcoin as a very exciting, interesting (from speculative, academic and practitioner point of view) financial instrument. For now, it shares some properties common to the dot.com stocks of around 1996-1998 and Dutch tulips ca 1620-1630, the periods before the full mania hit, but already showing the signs of some excessive investor confidence. So plant your seed with care.

Tuesday, February 18, 2014

17/2/2014: Is Bitcoin a Real Currency?


Bitcoin has been a focal point of many debates and discussions. None as important as whether or not the digital currency is a real currency.

A new research paper, titled "IS BITCOIN A REAL CURRENCY?" by David Yermack (NBER Working Paper 19747: http://www.nber.org/papers/w19747, December 2013) attempts to answer this question.

"Late 2013 became an auspicious time for Bitcoin, a “virtual currency” launched five years earlier by computer hobbyists. During the month of November 2013, the U.S. Dollar exchange rate for one Bitcoin rose more than fivefold, and the value of one Bitcoin, which had begun trading at less than five cents in 2010, exceeded $1,200.00. Two days of hearings were held by the U.S. Senate Commitee on Homeland Security and Governmental Affairs, at which government regulators testified that virtual, stateless currencies like Bitcoin had the potential to play useful roles in the commercial payment system.

Stories appeared in the media about travelers subsisting for lengthy periods by spending only Bitcoin, and various businesses – including Richard Branson’s Virgin Galactic space travel startup – attracted publicity by agreeing to accept Bitcoin as payment. With approximately 12 million Bitcoins circulating, the worldwide value of the currency exceeded $14 billion, equal to the market capitalization of a mid-range S&P500 company."

Yermack argues that "Bitcoin does not behave like a currency at all. Instead it resembles a speculative investment similar to the Internet stocks of the late 1990s." In other words: not even a commodity...

Starting from the money as defined in economics: "having three characteristics: it functions as a medium of exchange, a unit of account, and a store of value. Bitcoin increasingly satisfies the first of these three criteria, because a growing number of merchants, especially in online markets, appear willing to accept it as a form of payment. However, …Bitcoin performs poorly as a unit of account and as a store of value."

Why?

Reason 1: excessive volatility: "The currency exhibits very high time series volatility (see chart below), which tends to undermine any useful role for Bitcoin as a unit of account. A currency should have only negligible volatility in order to be a reliable store of value."

Reason 2: no correlation with other currencies: "Bitcoin’s daily exchange rate with the U.S. Dollar has virtually zero correlation with the Dollar’s exchange rates against other prominent currencies such as the Euro, Yen, Swiss Franc, or British Pound. Therefore Bitcoin’s value is almost completely untethered to that of
other currencies, which makes its risk nearly impossible to hedge for businesses and customers and renders it more or less useless as a tool for risk management."

Reason 3: "Bitcoin lacks additional characteristics that are usually associated with currencies in modern economies." Which are:

  • "Bitcoin cannot be deposited in a bank, and instead it must be possessed through a system of “digital wallets” that have proved vulnerable to hackers. 
  • "No form of insurance has been developed for owners of Bitcoin comparable to the deposit insurance relied on consumers in most economies. 
  • "No lenders use Bitcoin as the unit of account for standard consumer finance credit, auto loans, and mortgages, and no credit or debit cards have been denominated in Bitcoin. 
  • "Bitcoin cannot be sold short, and financial derivatives such as forward contracts and swaps that are routine for other currencies do not exist for Bitcoin. The absence of these types of contracts seems to be the most straightforward explanation for the astronomical rise in Bitcoin’s value in November 2013. Since currency investors have no easy way to bet against Bitcoin’s appreciation, skeptics can only watch as optimists trade the currency among themselves at ever-rising prices."



About the only steadily-advanced argument for Bitcoin is that it is a private currency offering anonymity. Alas, it might be the former, but it does not offer the latter. "The benign attitude of U.S. regulators toward Bitcoin, as revealed in the November 2013 Senate hearings, may stem from the existence of a universal online audit trail for Bitcoin transactions. Although many services exist on the Internet that purport to cloak Bitcoin transfers in anonymity, confidence in the security of these protocols appears to be naive. The arrest of Silk Road’s operator in October 2013, which took place amid widespread publicity of online data monitoring by the U.S. National Security Agency, disabused many about the possibility of keeping any information anonymous on the Internet. Tax evasion, money laundering, purchases of contraband, and other illicit activities using online transfers become far more difficult when the use of a virtual currency like Bitcoin can be reconstructed by governments that have sufficient technical skills."

Ouch!