TY - JOUR T1 - Put—call ratios and market timing effectiveness JF - The Journal of Portfolio Management SP - 25 LP - 28 DO - 10.3905/jpm.1988.409184 VL - 15 IS - 1 AU - Randall S. Billingsley AU - Don M. Chance Y1 - 1988/10/31 UR - https://pm-research.com/content/15/1/25.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -