Researchers say insider trading is pervasive

Two new academic papers — one from researchers at the National Bureau of Economic Research, the other from Stanford/University of Cambridge — conclude that insider trading is alive and well.

Go deeper with The Economist:

"The papers make imaginative use of pattern analysis from data to find that insider trading is probably pervasive. The approach reflects a new way of analysing conduct in the financial markets. It also raises questions about how to treat behaviour if it is systemic rather than limited to the occasional rogue trader."