We investigate changes in market quality in the United States and Canada during macroeconomic news announcements. We measure market quality in terms of the cost of trading, pricing errors, and returns dependence. Using a sample of cross-listed stocks and stock index futures, we provide robust...

We investigate “black mouth” in the Chinese stock market, which is a form of manipulation based on disinformation, and examine how investors react to such behavior and its underlying impact mechanism. Black mouth temporarily leads to abnormal investor attention and triggers an abnormal stock...