Financial securities have little utility past their monetary value. Off the top of my head, you give up on any cashflows, such as dividends/interest from the s

Financial securities have little utility past their monetary value. Off the top of my head, you give up on any cashflows, such as dividends/interest from the security and maybe also some anciliary rights, such as voting rights or whatever rights bondholders get. However, you account for forgone cashflows by adjusting the repurchase price accordingly. As for the rights, you can recall the repo (it's usually done overnight).