Stock Return Extrapolation, Option Prices, and Variance Risk Premium

• 成果类型: Article
• 署名作者: Atmaz, Adem
• 署名单位: Purdue University System; Purdue University
• 刊物名称: REVIEW OF FINANCIAL STUDIES
• ISSN/ISSBN: 0893-9454
• DOI: 10.1093/rfs/hhab051
• 发表日期: 2022
• 页码: 1348
• 关键词: Long-run risks; asset prices; Investor sentiment; volatility; expectations; leverage; MODEL; strategies; feedback; IMPACT

摘要

This paper presents a tractable dynamic equilibrium model of stock return extrapolation in the presence of stochastic volatility. In the model, consistent with survey evidence, investors expect future returns to be higher (lower) but also less (more) volatile following positive (negative) stock returns. The biased volatility expectation introduces a new channel through which past returns and investor sentiment affect derivative prices. In particular, through this novel channel, the model reconciles the otherwise puzzling evidence of past returns affecting option prices and the evidence of variance risk premium predicting future stock market returns even after controlling for the realized variance.