We study how investor sentiment affects stock prices around the world. Relying on households' Google search behavior, we construct a weekly measure of sentiment for 38 countries during the 2004–2014 period. We validate the sentiment index in tests using sports outcomes and show that the...

At the end of January 2021, a group of stocks listed on US stock exchanges experienced sudden surges in their stock prices, which - coupled with high short interest – led to brief short squeeze episodes. We argue that these short squeezes were the result of coordinated trading by retail...