"We hypothesize that banks become better able to manage acquisitions, and investors become better able to value those acquisitions, as these parties "learn-by-observing" information that spills-over from previous bank M&As. We find evidence consistent with these hypotheses for 216 M&As of large,...

We offer a new explanation for why academic studies typically fail to find value creation in bank mergers. Our conjectures are predicated on the idea that, until recently, large bank acquisitions were a new phenomenon, with no best practices history to inform bank managers or market investors....

We hypothesize that banks become better able to manage acquisitions, and investors become better able to value those acquisitions, as these parties ‘learn-by-observing’ information that spills-over from previous bank M&As. We find evidence consistent with these hypotheses for 216 M&As of...