As an exception to paragraph 145, if the collateral obtained through reverse repo, securities borrowing, or collateral swaps, which matures within the 30-day horizon, is re-used (ie rehypothecated) and is used to cover short positions that could be extended beyond 30 days, a bank should assume that such reverse repo or securities borrowing arrangements will be rolled-over and will not give rise to any cash inflows (0%), reflecting its need to continue to cover the short position or to re-purchase the relevant securities. Short positions include both instances where in its ‘matched book’ the bank sold short a security outright as part of a trading or hedging strategy and instances where the bank is short a security in the ‘matched’ repo book (ie it has borrowed a security for a given period and lent the security out for a longer period).