The information value of VIX

Two recent papers help understanding the information value of the implied volatility index for the S&P 500 stock index (VIX). An ECB paper de-composes VIX into measures of equity market uncertainty and risk aversion, e.g. the quantity and price of risk. Risk aversion in particular has been both a driver of monetary policy and an object of its effect. Meanwhile, a Fed paper emphasizes that the implied volatility of VIX (“vol of vol”) is a useful measure of tail risk prices and a predictor of tail risk hedges’ returns.

(more…)

Concerns over risk parity trading strategies

Risk parity portfolios allocate equal risk budgets to different assets or asset classes, most frequently equities and bonds. Over the past 30 years these strategies have outperformed traditional portfolios and become vastly popular. But a recent Commerzbank paper shows that outperformance does not hold for a very long (80 year) horizon, neither in terms of absolute returns, nor Sharpe ratios. In particular risk parity seems to be performing poorly in an environment of rising bond yields. And levered risk parity portfolios (“long-long trades”) are subject to considerable tail risk.

(more…)

The dangers of leveraged ETFs

Leveraged Exchange Traded Funds have become a significant factor in the U.S. equity market. According to a new Federal Reserve discussion paper their mechanical rebalancing rules can reinforce or even escalate large directional moves in the stock market, both through their own transactions and other market participants’ front running.

(more…)

The drivers of commodity price volatility

An empirical paper by Prokopczuk and Symeonidis investigates the drivers of commodity price volatility over the past 50 years. On the economic side inflation changes had been critical  until price growth compressed over the past decade. Also economic recessions have been conducive to larger (industrial) commodity fluctuations. From the 2000s the importance of financial risk variables has gained weight, an apparent tribute to the “financialisation” of commodities trading.

(more…)

Metals price distortions and the warehouse system

In a short note Macquarie’s commodity research reviews price distortions and prospective changes related to the warehouse system of the London Metals Exchange (LME). Since 2008 LME warehouses have effectively withdrawn over 4 million tons of aluminium from the physical markets, producing a record premium for physical delivery versus exchange spot prices. Premiums have also climbed for other metals. A future increase in mandatory load-out rates could compress premiums but also adds to uncertainty about the resulting adjustment in exchange prices.

(more…)

Efficient use of U.S. jobless claims reports

U.S. weekly jobless claims are a key early indicator for the U.S. economy and global financial markets. A new Kansas City Fed paper suggests that to use these data efficiently one should first estimate a time varying benchmark for the “neutral level” of claims. Claims above (below) the benchmark would indicate deterioration (improvement) of the U.S. labor market.

(more…)

The structural rise in cross-asset correlation

Cross-asset correlation has remained high in recent years, despite the post-crisis decrease in volatility. Typically, correlation surges during financial crises, when macro risk factors dominate across markets. However, J.P. Morgan’s Marko Kolanovic and Bram Kaplan show that there has also been a secular increase in cross-asset correlation since 1990, due probably to globalization of markets, risk management and alpha generation techniques.

(more…)

Overshooting of U.S. Treasury yields

The U.S. rates research team of Bank of America/Merrill Lynch reasons that fears of less accommodative monetary policy can trigger a rise in U.S. Treasury yields that goes beyond the rationally expected path in fed funds rates. Catalysts of such non-fundamental dynamics can be (i) increased mortgage convexity risk, (ii) spillovers and repercussions from other bond markets, and (iii) duration hedging in the wake of bond fund outflows. Thereby, large institutional flows in a market with few players to warehouse risk can lead to an overshooting of yields.

(more…)

On “institutional herding”

Herding denotes broad uniformity of buying and selling across investors. If the transactions of one institution encourage or reinforce those of another, escalatory dynamics, liquidity problems, and pricing inefficiencies ensue. A Federal Reserve paper (which I noticed belatedly) provides evidence of herding in the U.S. corporate credit market during the 2003-08 boom-bust experience, particularly during sell-offs. Bond herding seems to be stronger than equity herding. Subsequent to herding dynamics price reversals have been prevalent, consistent with the idea of temporary price distortions.

(more…)