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Journal cover: Qualitative Research in Financial Markets

Qualitative Research in Financial Markets

ISSN: 1755-4179

Online from: 2009

Subject Area: Accounting and Finance

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The influence of affect on stock price volatility: new theory and evidence

Document Information:
Title:The influence of affect on stock price volatility: new theory and evidence
Author(s):Robert A. Olsen, (Financial Risk Analysis, Adjunct, Decision Research, LLC, Eugene, Oregon, USA)
Citation:Robert A. Olsen, (2012) "The influence of affect on stock price volatility: new theory and evidence", Qualitative Research in Financial Markets, Vol. 4 Iss: 1, pp.26 - 35
Keywords:Affect, Financial management, Net present value, Risk, Stock prices, Stock returns, Volatility
Article type:Research paper
DOI:10.1108/17554171211213531 (Permanent URL)
Publisher:Emerald Group Publishing Limited

Purpose – The purpose of this paper is to present a behavioral explanation of excess stock price volatility relative to present value theory.

Design/methodology/approach – The conceptual basis is the impact of affect on investor decisions. The empirical tests involve survey data collected from a sample of semi-professional investors (AAII members) and investment advisors (CFPs).

Findings – It is suggested that affect causes investors to perceive an inverse ex ante relationship between risk perceptions and expected returns. Thus, new good or bad information has an amplified effect on stock valuations. In addition, investors tend to extrapolate recent short-term market movements into the future.

Practical implications – The primary implications are that ex ante perceptions of risk and return vary inversely and that affect has a strong influence on valuation. This means that simple statistical measures of risk are unlikely to fully capture risk perceptions and that market volatility can be expected to be greater than a simple present value model would imply.

Originality/value – This paper is unique as to the conclusion that risk and return perceptions vary inversely ex ante and that affect can amplify stock price volatility.

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