PT - JOURNAL ARTICLE AU - Josef Lakonishok AU - Seymour Smidt TI - Past price changes and current trading volume AID - 10.3905/jpm.1989.409223 DP - 1989 Jul 31 TA - The Journal of Portfolio Management PG - 18--24 VI - 15 IP - 4 4099 - https://pm-research.com/content/15/4/18.short 4100 - https://pm-research.com/content/15/4/18.full