The Great Margin Squeeze
Let’s get back to basics for a moment. For a bank, life is simple. They borrow money cheaply from savers and lend it out at a higher rate to borrowers. The difference, their net interest margin, is their bread and butter. When the central bank cuts rates, that spread gets squeezed. It’s like being a shopkeeper who is forced to lower prices, whilst the cost of their stock doesn't fall nearly as fast.
You can see this paradox playing out with the giants like Wells Fargo. On one hand, lower mortgage rates might tempt more people to buy houses, which is good for business. On the other, their colossal deposit base suddenly becomes less profitable. It’s a classic case of the Fed giving with one hand and taking away with the other. To assume a rate cut is an automatic boon for big banks is, to my mind, dangerously simplistic.