M&A deals create more value for acquiring firm shareholders post-2009 than ever before. Public acquisitions fuel positive and statistically significant abnormal returns for acquirers while stock-for-stock deals no longer destroy value. Mega deals, priced at least $500mil, typically associated with more pronounced agency problems, investor scrutiny and media attention, seem to be driving the documented upturn. Acquiring shareholders now gain $62 mil around the announcement of such deals; a $325 mil gain improvement compared to 1990–2009. The corresponding synergistic gains have also catapulted to more than $542 mil pointing to overall value creation from M&As on a large scale. Our results are robust to different measures and controls and appear to be linked with profound improvements in the quality of corporate governance among acquiring firms in the aftermath of the 2008 financial crisis.