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Trade Publication

Ahead of the Curve: Time to Embrace Downside Risk

Buying equity put options to reduce a portfolio’s downside risk exposure is so attractive that the high cost of doing so all but offsets the benefit, the authors contend.

Working Paper

Generalized Recovery

We shed new light, both theoretically and empirically, on the Holy Grail in financial economics: decoding probabilities and risk preferences from asset prices.

Working Paper

Early Option Exercise: Never Say Never

A classic rule in financial economics: Never exercise a call option and never convert a convertible bond, except just before expiration or dividend payments. This paper shows how this rule breaks down when financial frictions are introduced.

Working Paper

Being Right is Not Enough: Buying Options to Bet on Higher Realized Volatility

Should investors who buy options expect to profit when realized volatility increases? If so, under what conditions? To answer these questions, we analyzed the relationship between long volatility performance (buying options) and contemporaneous changes in volatility.

White Paper

Covered Calls and Their Unintended Reversal Bet

Equity index covered calls have historically realized returns not much less than their underlying index with significantly less volatility.

Working Paper

Causes and Consequences of Margin Levels in Futures Markets

Using a Freedom of Information Act request, we obtained a data set on margin requirements for 16 commodity futures contracts, and used it to explore how margins are set and to test the existing theories on the implications of changing margin levels.

White Paper

Understanding the Volatility Risk Premium

The volatility risk premium (VRP) represents the compensation that investors earn for providing protection against market losses. We explain the reasons why it may exist and explore its historical performance with a simple option-selling strategy.

White Paper

PutWrite versus BuyWrite: Yes, Put-Call Parity Holds Here Too

Surprisingly, the CBOE S&P 500 PutWrite Index has outperformed the CBOE S&P 500 BuyWrite Index by around 1.1 percent annually between 1986 and 2015. We explain the mystery behind this outperformance and its implications for portfolio construction.

Journal Article

Demand-Based Option Pricing

Index and equity options are notoriously difficult to price.

Interview

Words From the Wise: An AQR Interview with Ed Thorp

We sat down with Ed Thorp, a pioneer in the mathematical analysis of casino games and investing, to get his insights on an array of topics from casino gambling to quantitative investing.