HOW MUCH YOU NEED TO EXPECT YOU'LL PAY FOR A GOOD PNL

$ Inside the "get the job done circumstance" you liquidate the portfolio at $t_1$ realising its PnL (allow me to simplify the notation a bit)$begingroup$ The pnl calculation is finished in two measures. By definition, you worth your portfolio as of these days, you value your portfolio as of yesterday, and the real difference will likely be your pnl