How much will borrow fees cost me if I hold a short position overnight?

How this is calculated

• Position value equals share price multiplied by shares shorted. This estimate uses a 360-day convention for converting an annualized borrow rate into a daily rate, common for stock loan fee calculations. Some brokers use 365; ask your broker which convention they apply.
• Daily borrow cost equals position value multiplied by the annualized rate, divided by 360. Total borrow cost multiplies that by the number of days held.
• Hard-to-borrow rates are not fixed. They can rise sharply if a stock becomes harder to locate, and your broker can force-close a short if shares are recalled and no borrow is available.
• This tool does not include margin interest on the short sale itself, dividends you may owe if the stock pays a dividend while you are short, or any locate fees charged separately from the daily borrow rate.
• Short selling carries theoretically unlimited loss potential since a stock's price has no upper limit. Confirm your broker's actual borrow rate and margin requirements before entering or holding a short.