Recent academic studies indicate that acquirers' cumulative abnormal returns (CAR) decline from deal to deal in acquisitions programs. Does this pattern suggest hubristic CEO behaviors are significant enough to influence average CAR patterns during acquisitions programs? An alternative...

Roll R² (1988) concludes that our ability to explain stock returns is modest: close to 80% of the daily stock returns variance (65% for monthly stock returns) remain unexplained by a combination of priced factors and a portfolio of industry peers, even controlling for firm specific news...