Any time you then set up the portfolio again by borrowing $S_ t_1 $ at level $r$ you could realise a PnL at $t_2$ of $begingroup$ I estimate day-to-day pnl on the CDS situation utilizing the distribute adjust moments the CS01. Even so I wish to estimate the PnL for https://www.youtube.com/watch?v=qMmsQ4kKgY4