When selling stock short, there is the potential for a hard to borrow fee. This fee is charged by other firms when Tradier Brokerage borrows shares from these firms in order to fulfill a customer sell short order when the shares are not available internally. In some cases, shares can be available initially, but then become difficult to borrow at a later time. If Tradier Brokerage is forced to borrow the shares externally, the hard to borrow fee will be applied at the period during which the shares must be borrowed externally.