Joy Ishii’s research focuses on empirical corporate finance and banking. Recent work has examined the valuation effects of insider stock ownership, the relationship between firm-level corporate governance structures and corporate performance, the role of social networks in corporate finance, and the role of network effects in ATMs in the retail banking industry.

She is an Assistant Professor at the Stanford Graduate School of Business. She graduated summa cum laude from Harvard University with a BA in Economics, and received her PhD in economics from Harvard in 2005.

She currently teaches core Finance in the Sloan program, Corporate Finance 1 at the Stanford Law School, and an elective called Financial Intermediaries and Capital Markets.