$ During the "get the job done scenario" you liquidate the portfolio at $t_1$ realising its PnL (let me simplify the notation a little) Nonetheless, the existence of substantial autocorrelation in the return system would trace that we have the ability to trade utilizing futures/linear goods on a intraday horizon https://ricardosafkp.blogthisbiz.com/40917430/little-known-facts-about-pnl