Using data with trader identities for all transactions in SENSEX-index stocks on the Bombay Stock Exchange over seven years, we identify individual day traders (IDT) to be “noise traders”, who play an important role in market microstructure models in the literature.IDT contribute 10% to...

After insider trading regulations become stricter, insiders partially substitute trades in their own stocks with informed trades in peer stocks. Using a uniquely constructed dataset of trades by corporate insiders in all stocks, we find that insiders are 20% more likely to trade in peer stocks...