THE SMART TRICK OF PNL THAT NOBODY IS DISCUSSING

$ Within the "do the job scenario" you liquidate the portfolio at $t_1$ realising its PnL (let me simplify the notation a bit)In the meantime it's the finish with the day and time for Trader B to hedge, but he has absolutely nothing to delta-hedge since the inventory is one hundred at the conclusion of the investing day, a similar price at which he