The article argues that including financial assets in the calculation of profit rates is crucial. By analyzing financial markets in the UK and US, it shows a consistent decline in profit rates since the late 1960s. This decline is linked to the rise of securitized lending and the growth of financial instruments. The study suggests that these assets should be considered part of the total capital invested by capitalists, affecting the overall profit rate. This challenges traditional views on profit rates and highlights the impact of financialization on the economy.