You can actually look this up! IBKR provides SLB (stock loan borrow) rates for users, and someone made a site to report this data. https://iborrowdesk.com/ http

You can actually look this up! IBKR provides SLB (stock loan borrow) rates for users, and someone made a site to report this data. https://iborrowdesk.com/ https://iborrowdesk.com/