A hard-to-borrow stock is used to indicate what stocks are difficult to borrow for short sale transactions. If you are short selling a ''hard-to-borrow" stock, you'll have to pay a daily stock borrow fee, which changes based on the stock's price and its availability. Each stock's hard-to-borrow fee rate varies depending on the volatility and scarcity of the stock. Note that a fee rate change can significantly impact the profit or loss of any short sale. If the stock you've shorted is classified by Webull as hard to borrow, the fee rate you pay on the loan of these stocks may vary depending on a number of factors, including availability and supply and demand of shares.