Nejat’s research activity focuses on backdating of executive options, risk-return trade-off in asset prices, intra-day impact of insider trading, long-run performance of IPOs, managerial overconfidence, Chinese walls and conflicts of interest in securities firms, option pricing, and conflict between information efficiency and rewards to information gathering.  His backdating work with M.P. Narayanan has helped uncover one of the biggest corporate scandals of recent years, bringing to light a business practice with numerous legal, ethical and corporate governance implications.