A few large firms in the U.S. financial system achieve substantial economic gains. Their dominance sets them apart while also raising concerns about the suppression of worker earnings. Utilizing administrative data, this study reveals that the largest financial firms pay workers an average of 30.2% more than their smallest counterparts, significantly exceeding the 7.9% disparity in nonfinance sectors. This positive size-earnings relationship is consistently more pronounced in finance, even during the 2008 crisis or compared to the high-tech sector. Evidence suggests that large financial firms’ excessive gains, coupled with their workers’ sought-after skills, explain this distinct relationship. (JEL G20, J31, J42, L11, L12, L13)

Mergers and acquisitions (M&As) are an important mechanism through which technology is adopted by firms. Firms with greater technological skill acquire less tech-savvy firms and, subsequently, increase technology investment at the target. This has important implications for labor reallocation following M&As. We show that target establishments become less routine intensive post-M&A, especially when a target had greater routine occupational employment, compared to its acquirer, ex-ante. We also provide evidence consistent with targets investing in information technology which tends to displace more office routine occupations. Such labor reallocation impacts wages, resulting in higher pay inequality within target establishments.