IFin Seminar, Ehud Ronn, University of Texas at Austin "Using Equity, Index and Commodity Options to Obtain Forward-Looking Measures of Equity and Commodity Betas, and Idiosyncratic Variance"

Istituto di finanza

Data: 16 Settembre 2020 / 15:25 - 16:40

Relatore: Ehud Ronn, University of Texas at Austin 

Tema:     "Using Equity, Index and Commodity Options to Obtain Forward-Looking Measures of Equity and Commodity Betas, and Idiosyncratic Variance"

Data:      16 settembre 2020

Ore:        15:25 - 16:40

Aula:       E-Seminar

Campus di Lugano

 

Abstract:

This paper presents a parsimonious and theoretically-sound basis for extracting forward-looking measures of equity and commodity betas, and idiosyncratic variance. Defining forward-looking betas and idiosyncratic variance as perturbations of historical estimates, we use the market prices of equity and index options under a single-factor market model to compute forward-looking term structures of equity betas and idiosyncratic variance. When applying the model to the market prices of options on oil company stocks and a market index, we are able to discern the market’s perceptions regarding these oil companies’ prospective beta, and hence signaling their future sensitivity to market changes. In turn, the prospective fraction of idiosyncratic variance relative to total variance provides a forward-looking market measure for onset of crises, when idiosyncratic risk fades relative to systematic, and complementing the information conveyed by VIX and the CBOE’s equity implied correlation. The model bears a natural extension to the joint use of options on equities and the futures price of oil. In so doing, we are able to discern a forward-looking oil beta. Such a beta, in conjunction with risk-neutral futures prices, gives rise to a CAPM-based forecast of oil prices.

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