Banks also don't need to borrow money from fund companies.
The high yield of money funds is due to the high interest rate of agreed deposits of banks. The high interest rate of bank deposits is due to the tight liquidity in the last two months of last year. Under the control of the central bank, major financial institutions are structurally short of money, so the overnight lending rate, repurchase and national debt interest rates soared. This is the reason for the high yield of money funds.