NOT KNOWN DETAILS ABOUT PNL

$ Inside the "work scenario" you liquidate the portfolio at $t_1$ realising its PnL (let me simplify the notation a tad)The portfolio of bonds should have a selected DV01, that will be accustomed to compute the PnL. Can another person tell me if this is correct or is there a little something more? For equities it should be just a straightforward su