The PnL in between $t$ and $T$ could be the sum of all incrementals PnLs. That is if we denote by $PnL_ uto v $ the PnL between times $u$ and $v$, then Uno de los mayores obstáculos que nos encontraremos en el camino hacia nuestros sueños son las opiniones https://www.youtube.com/watch?v=qMmsQ4kKgY4