The Market Reaction to Bank Regulatory Reports (Formerly 'Day 30 : The Tacit Quarterly Information Event in the Banking Industry')

We investigate the role of bank regulatory reports in the information environments of banks. We find that: (1) Call Reports, but not FR Y-9Cs, elicit economically significant stock price and volume reactions when they are publicly released despite the fact that Call Reports usually follow earnings announcements; (2) some of the reaction is traceable to a schedule dealing with mortgage lending and servicing; (3) the release of the Call Reports is tightly clustered around the 30th day after quarter-end; (4) after bank regulators undertook a “modernization project” to speed the processing and public dissemination of regulatory reports, the banking industry routinely experiences abnormal stock price volatility and trading volume on the 30th day of the quarter; and, (5) the market reaction increased after media coverage of this study. Our findings are of interest to regulators who require and monitor the reports, banks who prepare the reports, investors who may use the reports, and academics who can base research designs on the timing patterns we uncover