We identify a group of "suspicious" firms that use stock splits--perhaps, along with other activities--to artificially inflate their share prices. Following the initiation of suspicious splits, share prices temporarily increase, and subsequently decline below their pre-split levels. Using...

Diversity of opinions among investors plays a crucial role in models of financial market speculation and bubbles. Yet, little is known about the origins of investor disagreement. Using unique data from China, we identify an important cultural and linguistic factor. We show that investors living...

Using account level data from the Shanghai Stock Exchange, we find widespread evidence consistent with insiders manipulating share prices to exploit naïve retail investors. We identify a group of “suspicious” firms that use stock splits—perhaps, along with other misleading activities—to...

We obtain a unique dataset to examine the effect of the Shanghai-Hong Kong Stock Connect program, which allows foreign investors from Hong Kong to buy stocks listed in Shanghai (northbound) and domestic investors from mainland China to buy stocks listed in Hong Kong (southbound). There is a...

To shed light on the formation, expansion, and deflation of bubbles, we study how the cross section of stocks evolves during the 2015 Chinese stock market bubble. Using data on administrative account-level stock holdings covering a representative sample of 18 million retail investors and all...