TY - JOUR AU - Hayashi,Fumio AU - Jagannathan,Ravi TI - Ex-Day Behavior of Japanese Stock Prices: New Insights from New Methodology JF - National Bureau of Economic Research Working Paper Series VL - No. 3421 PY - 1990 Y2 - August 1990 UR - http://www.nber.org/papers/w3421 L1 - http://www.nber.org/papers/w3421.pdf N1 - Author contact info: Fumio Hayashi Hitotsubashi University Grad. School of International Corporate Strategy 2-1-2 Hitotsubashi, Chiyoda-ku Tokyo 101-8439 JAPAN Tel: 81-3-5841-5652 Fax: 1-801-469-0086 E-Mail: fumio.hayashi@gmail.com Ravi Jagannathan Kellogg Graduate School of Management Northwestern University 2001 Sheridan Road Leverone/Anderson Complex Evanston, IL 60208-2001 Tel: 847/491-8338 Fax: 847/491-5719 E-Mail: rjaganna@northwestern.edu AB - We study the ex-dividend day behavior of Japanese stock prices for the period 1983-87. We find that, contrary to previous findings, prices of ex-day stocks drop by nearly the full amount of the dividend. However, ex-day stocks shows an abnormal return. Also, for the many ex-dividend day stocks that also go ex-rights on the same ex-day, we find that the return is on average higher than that for stocks without rights issues. We thus conclude that the ex-day behavior of Japanese stocks are qualitatively similar to that of U. S. stocks. ER -