Newly public firms make acquisitions at a torrid pace. Their large acquisition appetites reflect the concentration of initial public offerings (IPOs) in mergers and acquisitions-(M&A-) intensive industries, but acquisitions by IPO firms also outpace those by mature firms in the same industry....

We argue that the entry of commercial banks into bond underwriting led to the evolution of co-led underwriting arrangements and lowered the screening incentives of underwriters. Lead underwriters in co-led syndicates faced weaker incentives to screen issuer quality. In boom markets, issues...