We provide evidence that the stock market response to macroeconomic news weakens in times of high investor sentiment. The reaction to macroeconomic information is 50 percent weaker in times of elevated bullish investor sentiment, relative to periods of low sentiment. This dampening effect holds...

This paper investigates the impact of Twitter attention, measured by abnormal number of tweets on stock trading activities. We find that Twitter attention has predictive power for future stock volatility and trading volume. A heightened number of tweets is followed by high volatility and trading...

This paper examines investment patterns of 50 sovereign wealth funds (SWFs) in nations around the world. We study investment by SWFs in 903 public and private firms over the period 1984-2009. As expected, we observe SWFs investments are more often in private firms when the market returns of...

Investors are inextricably linked to financial institutions, money managers, and the products they market. Mutual funds, exchange-traded funds (ETFs), hedge funds, and pension funds manage or hold roughly $55 trillion in combined wealth. This chapter examines these topics with a behavioral...

Behavioral theories contend that the human decision-making process tends to both incorporate anchor points and improperly weight low probability events. In this study, we find evidence that equity option market investors anchor to prices and incorporate a probability weighting function similar...

Recent evidence (Stambaugh, Yu, and Yuan, 2015) indicates that the most promising explanation for the negative price of idiosyncratic volatility is from its function as a limit arbitrage. Our evidence incorporating firm specific news is inconsistent with the limited arbitrage explanation. Since...