We identify a new source for the declining role of small banks in the banking industry: Long-term changes in the banking sector are partially a consequence of changes in the industrial sector. Small banks are relatively more exposed to small business shocks, because small businesses compose a larger share of their customers. Lower real-side demand for small business financial services is responsible for part of the relative decline in small banks’ deposits. Rough calculations suggest that deposits at small banks would have been $280 billion higher from 2002 to 2017 if small firms had grown at the rate of larger firms.

We describe the dimensions along which bank technologies differ from fintech competitors and construct a novel measure of a bank’s technology based upon its overlap with fintech firms in terms of granular product installation data. A one standard deviation increase in our financial technology measure is associated with an 8.3 percentage point increase in Paycheck Protection Program (PPP) loans in 2020Q2. We show that smaller banks benefited more from marginal technology gains, that technology facilitated out-of-area lending, and that technology complemented small banks’ branch-based in-area lending. In a difference-in-differences analysis, we show an outsized increase in small business lending growth in 2020 for high tech small banks relative to their peers.

The regulatory dialectic describes the dynamic process of banks and regulators continuously acting and reacting to one another. We provide empirical evidence of the regulatory dialectic in the prime institutional money market fund (PI-MMF) industry. Regulations on commercial deposits fueled growth in bank-sponsored PI-MMFs as a form of shadow banking in a relatively less regulated market. Re-regulation following the 2008 financial crisis halted this rapid growth, and the industry shifted from PI-MMFs to government institutional MMFs. We conjecture that this dialectical process will continue, and the decline of the PI-MMF may engender a shift toward structurally similar products, like stablecoins.