The financialization of capitalism has been marked by the sustained rise of financial profits. In the United States, financial profits as a proportion of total profits rose enormously from the early 1980s to the early 2000s, collapsed during 2007–09, and subsequently recovered, but without reaching previous heights. During this period, the trend of the average rate of profit has been largely flat. The relative rise of financial profits in spite of stagnant average profitability represents a theoretical and empirical conundrum. We will argue that the answer should be sought partly in financial expropriation, but also in public interest rates kept at extraordinarily low levels. In this light, the rise of financial profits represents a vast public subsidy to the financial system characteristic of financialization.