Why am I unable to return Pre-borrowed shares?

Trade date (T) represents the day your order to buy or sell a security is executed; settlement date is the day your order is finalized and on which funds and the securities must be delivered. Currently, settlement date occurs two business days after trade date (i.e. T+2).  If you sell shares on a stock on Tuesday, the transaction will settle two days later on Thursday…

Standard settlement period for most currencies is 2 business days (Trade Date plus two business days: T+2), with some pairs such as USD.CAD settling the next business day (Trade Date plus one business days: T+1).

In order for a date to be a valid settlement date for a Forex transaction, the central banks for both currencies must be open for settlements. If either currency has a 'holiday' on the target settlement date, settlement is deferred until the next valid business day for both currencies. In addition, intervening holidays, that is a holiday between trade date and the standard 2 days later may or may not defer settlement, depending on which currencies are involved. Most currency transactions will not settle on a USD settlement holiday. This treatment is regardless of whether USD is part of the transaction directly, i.e. a EUR.JPY currency transaction will not settle on a USD settlement holiday but will be deferred to the next valid business day for all three currencies…

With the change to T+1 settlement the standard record date will be the business day after the trade is made based on trade date plus one business day. This change will need to be considered for when to place a trade to be recognized as an owner of record…

Loaned shares may be sold at any time, without restriction. The shares do not need to be returned in time to settle your sale of the share and proceeds from the sale are credited to the client’s account on the normal settlement date. In addition, the loan will be terminated on the open of the business day following the security sale date…