Another day demonstrating just how pathetic stock trading has become. Up until the close, the NYSE was on track to record the lowest quad witching volume in history. Fast forward to 1 minute after the close, and the machines kick in, sending in almost one billion shares down the frontrunnable chute known as the NYSE pipeline. Too bad most retail investors still don't understand that the only time when trading actually occurs now is after the market is officially closed. And even with the post-close spike, this was still arguably one of the lowest quad witching days ever.