$ While in the "function circumstance" you liquidate the portfolio at $t_1$ realising its PnL (let me simplify the notation a bit) WillWill 13344 bronze badges $endgroup$ 4 $begingroup$ Did you not say at first that $V$ is self-funding? In that situation there isn't any Price tag to finance it https://www.youtube.com/watch?v=qMmsQ4kKgY4