Showing posts with label Efficient Markets. Show all posts
Showing posts with label Efficient Markets. Show all posts

Thursday, June 23, 2016

Bank Stress Tests and the Problem of Ignoring Reality

“Too large a proportion of recent "mathematical" economics are mere concoctions, as imprecise as the initial assumptions they rest on, which allow the author to lose sight of the complexities and interdependencies of the real world in a maze of pretentious and unhelpful symbols.
                                                                                        - John Maynard Keynes

The 2011 European Bank stress tests were largely held in disregard.  They had managed to assume away the implications of a chief risk held by the banks being tested – that countries within the EU could default – culminating in several banks easily passing the tests, only to fail soon thereafter.

The results were released in July 2011, with Dexia and Bankia and the Cypriot banks passing and sometimes easily passing the tests. Dexia failed in October 2011. Bankia survived a little while longer, before being nationalized in May 2012. The Cypriot banks never triggered any kind of concerns among the key monitoring agencies, the EU, EBA, IMF or BIS, well, not before the Cypriot banking collapse.

The editorial board at Bloomberg View just put out a piece on why the US Fed's bank tests lack credibility.  Same problem, here: a lack of basis in reality:
"...the simulation [being run] is a far cry from what happens in a real crisis. It doesn't fully capture how contagion can afflict many of a bank's counterparties at once, magnifying losses many times over. It also assumes that a thin minimum layer of equity capital -- just $4 per $100 in assets -- would be enough to maintain the market's confidence in a bank's solvency. These flaws make a passing grade almost meaningless."
Reality is very different, and modeling behavior in a stressed environment is necessarily a different process from modeling a normal environment, as what was previously uncorrelated or even inversely correlated can suddenly become correlated ... as the economic principles break down and legal rules change.

We're not saying this is easy – but there's little comfort to be gained in performing a test if that test fails to capture the harsh reality that, in times of crisis, our (joint) behavior itself will compromise the predictive value of the theoretical process we're modeling.  

Perhaps a picture will say it best:


Tuesday, June 21, 2016

GFC 2.0 – Could it Happen Again?

We returned recently from an enjoyable and enlightening trip to Australia.

This post covers some of the recurring themes that emerged from our discussions Down Under. Given NY’s central positioning in the "GFC" (Australia’s initialism for the Global Financial Crisis) and so many of the subsequent reform efforts, the Aussies were curious to hear our view on whether it can happen again. 

With assistance from some graphics and helpful references, we are going to try to answer this question in a short-ish blog. 

A recent post by Bruce MacEwen over at Legal Business does a solid job of summarizing a number of indicators suggesting that economies across the globe are failing to respond to monetary stimulus efforts as central bankers would have hoped, and we were asked about many of these same issues. MacEwen ends his post: “I submit that we have positive confirmation of that hypothesis [Growth is Dead] and that our attention has to turn now, if it hasn't already, to the 'Now What?’” 

Rather than focusing on what might precipitate a GFC 2 – Mohammed El-Erian recently posted some thoughts on this here – we focus on what has been happening, and whether we might be particularly vulnerable to a shock, major or minor. 

In short, the Fed’s response to the first GFC was to expand the monetary base in support of financial asset prices: the "Greenspan Put" which has been handed down to Bernanke and then on to Yellen: 


The emerging narrative is that Central Banks around the globe have in quick succession reduced borrowing costs to record lows (over $10 trillion in negative-yielding sovereign debt), stimulating monetary supplies as a temporary measure to buy time and allow economies to recover from the shock of 2008. However, politicians have typically not had the stomach to implement the structural fiscal reforms required for sustainable economic growth … and have simply used the liquidity injection from central banks to borrow additional cash to fund deficits rather than cut benefits or restructure meaningfully. 

Furthermore, the other (some would say main) engine of economic growth – private-sector corporations – have more generally retreated from capital investment that would normally be conducive to economic growth. This pullback can be attributed to a range of reasons, from repairing their own balance sheets to an uncertainty in the economic environment that has culminated in their being conservative in their capital planning. The net effect has been an increase in system-wide leverage, with global debt rising to ~240% of GDP at the end of 2014 (from ~200% pre-GFC).

US corporate debt has climbed as earnings have stagnated: 


Over at Casey Research they highlight that (non-financial) corporate debt growth is outpacing GDP growth and has now eclipsed the debt-to-GDP ratios seen in each of the past three US recessions. This is not to say it makes another GFC imminent, as the lead time between the increase in corporate debt relative to GDP and previous recessions has varied.  Rather, it simply highlights that not much has improved from previous cycles with regard to the amount of leverage in the system. 


Now, one might argue that the increase in leverage / debt loads would be sustainable if sovereigns or corporations were taking advantage of record low yields to invest in growth via infrastructure projects or R&D, which would likely be the policymakers’ preference. 

However, instead of capitalizing on low borrowing costs to invest in growth, borrowing cheaply has allowed them to maintain a certain level of politically "easy" spending, enabling them to delay making the hard choices.   As for corporations’ use of their increased borrowings, Bloomberg’s Matt Levine will often tell us that “people are worried about stock buybacks”... This suboptimal use of borrowings, at least from the perspective of driving revenue growth, has been among the factors leading ratings agencies to downgrade their assessments of corporations’ ability to repay their increasing debt burdens.  Only two companies remain with AAA ratings from S&P.


Some may then argue that since the GFC, regulators have learned the lessons of what precipitated the crisis. They have worked to stabilize the financial system through increased scrutiny of banks’ activities, such as the Volcker Rule, and capital planning through annual stress tests such as CCAR – and this rather looks to continue to increase bank’s market risk capital requirements by roughly 40% from pre-crisis levels. However, John Kay’s “Other People’s Money” argues that while the extent of regulation has increased, it is an expansion of a flawed methodology and does not address the fundamental issues within the banking sector: so these capital increases are unlikely to save us. 

Further, even if regulators do get the house in order for individual banks, Adair Turner’s “Between Debt and the Devil” argues that one should think of debt as a negative externality akin to pollution. That is, while it may be rational for an individual borrower and lender to come to terms, one must consider the overall amount of leverage in the system, which is not something we are aware of regulators explicitly controlling (yes, the Fed has attempted to limit US banks from underwriting / syndicating leveraged loans where resulting leverage would be greater than 6x EBITDA, though that has simply pushed the underwriting to shadow banks / foreign regulators banks such that the impact on overall system leverage is doubtful). We have only seen individual bank stress tests, and some macro-prudential initiatives around housing markets from our Antipodean friends – so even if banks are individually well capitalized, which we previously said they may not be, it is the overall leverage across the system that should concern us. 

With tepid growth across most of the developed world, corporate and government balance sheets more levered than any time before, and interest rates already at historic lows, central banks may have few levers left to battle any further deterioration in economic performance, regardless of the drivers. And drivers there are, from consumer debt growing in worrisome fashion, to debt being sold to insure banks against rogue trades, to one-off securitizations being done to the tune of $6 billion. And the list goes on, in addition to El-Erian's factors mentioned above.

If we agree that our central banks may not be well positioned to play as formidable a role, we would have to hope that structural reforms are in place to allow private institutions and individuals to step in.  And that, too, seems hardly to have been corrected since the GFC with, among other things, self-perpetuating vicious cycles still being a problem – in the pricing and rating of securities – during a stressed environment or a liquidity event.  


Outside of the central banks, we don't seem yet to have a functioning correction mechanism.  So, when asked whether it can happen again, our response has been: "We hope not, but what could possibly go wrong?”

Friday, January 22, 2016

Year of the OIL

Happy new year readers, and welcome to what's increasingly looking to be a year influenced by oil prices (and perhaps considerations of global warming).

Our first post looks at a phenomenon in the world of robotic, efficient markets: a stark inefficiency.

Yesterday Thursday, January 21, shares of exchange-traded note OIL closed down 17%, so we forgive you if you thought that oil had taken another bludgeoning.  Meanwhile, WTI crude oil futures closed up 11% – its best performance of the year so far.  

OIL is the ticker for the iPath® S&P GSCI® Crude Oil Total Return Index ETN.  Page 1 of OIL’s prospectus states, “The return on the ETNs is linked to the performance of the S&P GSCI® Crude Oil Total Return Index,” so OIL could be expected to go up when oil goes up, and vice-versa.

Below is a table of daily returns from the past 7 trading days ... and we see that OIL isn’t doing such a good job of tracking oil’s performance:


Why did OIL tank yesterday, while oil surged?

The answer, in part, is that a market inefficiency (aka a "whoops") was being corrected, or arbitraged away, finally.  But the story gets more interesting...

It’s all about the ETN’s premium to its daily redemption value – think net asset value (NAV).  The daily redemption value is what an investor could redeem his ETN for by turning over his shares to the ETN issuer (in this case, Barclays).  Since the turn of the year, as the price of crude has plumbed new lows, OIL has not fallen nearly has much as it should have.  While the daily redemption value has fallen over 35% YTD, as of Wednesday’s close (1/20) OIL shares were down less than 12% YTD, driving the premium to 49%!  And yesterday was the day the premium was being "corrected."

The top half of the Bloomberg chart below shows the price history since the beginning of 2015 for OIL’s market price and daily redemption value, while the bottom half shows the market premium.


For perspective, the average premium since issuance of the ETN in 2006 is 0.37% (looking at the average premium from issuance through 1H15 we get 0.06%).  Clearly anything over 10% is wildly aberrational – yet that’s been the case since December.

Where were the arbitrageurs, enforcing price efficiency?  Normally, authorized participants (APs) can create and redeem shares of exchange traded products, which keeps prices in line with NAV.  If there is a large enough price-value divergence, an AP would choose to create shares for the cost of the lower NAV (resulting in a long position) while simultaneously selling shares at the higher market price (offsetting the long position that resulted from creating shares), capturing virtually riskless profits.  Conversely, if the NAV were higher, the AP would buy shares at the lower market price while redeeming shares at the higher NAV.  This mechanism keeps prices close to NAV.

However, according to Dave Nadig at ETF.com Barclays on 9/15/15 slapped a 50 cent per share fee on the creation of new OIL shares.  At a $5.00 NAV, that amounts to a 10% fee!  (Perhaps Barclays is interested in winding down OIL, instead of expanding issuance.)  Regardless of Barclays' motivations (and possible lack of disclosure of this fee if Nadig is correct), the 50 cent creation fee would only explain part of the premium that had built up.  Wednesday’s closing trading price of $5.51 was still 31% higher than the NAV plus 50 cents!

Wednesday at 2:35 PM, Barclays issued an investor guidance press release saying, “Recently, a material premium has developed in the trading price of the ETNs on the exchange in relation to their intraday indicative value.”  It made no mention of any fees that may have thrown sand in the gears of the price/value enforcement mechanism.   Finally, the following day, traders began to trim the premium paid for OIL shares, causing shares to tumble 17% Thursday, with OIL underperforming its NAV by 23% and crude oil futures by 28%.  After Thursday’s price action, OIL only trades at a 16% premium to NAV, with most of that explained by the $0.50 per share creation fee.

Let us know if you have any intelligence to share on this.
~PF2