Well, while that's true in theory, it's not exactly true in practice. Funding and borrow costs differ across the platforms, while if there is an exchange-traded product it's far more transparent. Also, futures provide long/short symmetry with regards to borrow and funding costs - right now, if you are long a HTB stock, you get no benefit while your broker is getting rich.Guys, the interest cost is priced into the futures. It's priced into ALL futures. If a stock is hard to borrow, it will also be discounted through the futures.