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Volatility, Valuation Ratios, and Bubbles: An Empirical Measure of Market Sentiment
Author(s) -
GAO CAN,
MARTIN IAN W. R.
Publication year - 2021
Publication title -
the journal of finance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 18.151
H-Index - 299
eISSN - 1540-6261
pISSN - 0022-1082
DOI - 10.1111/jofi.13068
Subject(s) - valuation (finance) , economics , volatility (finance) , econometrics , financial economics , upper and lower bounds , dividend , market sentiment , mathematics , finance , mathematical analysis
We define a sentiment indicator based on option prices, valuation ratios, and interest rates. The indicator can be interpreted as a lower bound on the expected growth in fundamentals that a rational investor would have to perceive to be happy to hold the market. The bound was unusually high in the late 1990s, reflecting dividend growth expectations that in our view were unreasonably optimistic. Our approach exploits two key ingredients. First, we derive a new valuation ratio decomposition that is related to the Campbell–Shiller loglinearization but that resembles the Gordon growth model more closely and has certain other advantages. Second, we introduce a volatility index that provides a lower bound on the market's expected log return.