Interestingly enough, the hard to borrow rate is not necessarily what you will receive. Currently IB hard to borrow rate for NKLA is 967%. I received interest for about 100 shares which were lent out on Friday and over the weekend. For that IB was charging about 450%, which means I only got 225%. It still equated to nearly $200. On a hilarious side note, because your account is an "all or nothing" as far as stock yield enhancement goes, I also received about $0.04 (yes, 4 cents) for the same period on about the same number of SPY shares.