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Journal Article

Risk and Return of Equity Index Collar Strategies

July 1, 2016 - Roni Israelov Matthew Klein

Equity index collar strategies are often perceived as a way for investors, at little to no cost, to exchange some upside exposure for reduced losses on the downside.

Journal Article

International Diversification Works (Eventually)

May 1, 2011 - Cliff Asness Roni Israelov John M. Liew

Critics of international diversification observe that it does not protect investors against short-term market crashes because markets become more correlated during downturns.

Journal Article

An Alternative Option to Portfolio Rebalancing

March 5, 2018 - Roni Israelov Harsha Tummala

We explore how investors can use an implementable option selling overlay to improve portfolio rebalancing.

Journal Article

Combining Empirical Likelihood and Generalized Method of Moments Estimators

April 22, 2011 - Roni Israelov Steven Lugauer

This paper presents a new family of estimators for use in statistical estimation and econometrics.

Journal Article

Covered Call Strategies: One Fact and Eight Myths

October 21, 2014 - Roni Israelov Lars N. Nielsen

Call overwriting is a method of simultaneously expressing a view on a security and its volatility, and the CBOE S&P 500 BuyWrite Index (BXM) is one of many ways to get exposure to the equity and volatility risk premia.

Journal Article

Embracing Downside Risk

January 15, 2017 - Roni Israelov Lars N. Nielsen Daniel Villalon

This paper shows that downside risk tends to be the main source of long-run returns in equities and other asset classes, and argues that long-term investors may be better off embracing downside risk in certain cases.

Journal Article

Still Not Cheap: Portfolio Protection in Calm Markets

August 3, 2015 - Roni Israelov Lars N. Nielsen

This paper investigates the relationship between option richness and volatility across 10 global equity indices.

Journal Article

Covering the World: Global Evidence on Covered Calls

July 7, 2017 - Roni Israelov Matthew Klein Harsha Tummala

Covered call strategies may be decomposed, using a risk and performance attribution methodology, into three components: equity exposure, short volatility exposure, and equity timing. This paper applies that attribution methodology to covered calls on 11 global indexes.

Working Paper

Risk Parity Is Not Short Volatility (Not That There's Anything Wrong with Short Volatility)

August 21, 2019 - Benjamin Hood John J. Huss Roni Israelov Matthew Klein

Are risk parity strategies hiding an implicit short volatility? To find out, we simulated stylized versions of three asset-class (equity, fixed income, and commodities) risk parity and short volatility strategies, and we compared the trading behavior and returns of each.

White Paper

Understanding the Volatility Risk Premium

May 11, 2018 - Ing-Chea Ang Roni Israelov Rodney N. Sullivan Harsha Tummala

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.