(a move meant to cripple any dip-buying intentions in early market trading), yet which algo was left on for the weekend, arguably to spark an HFT-driven pile up of selling and shorting, and to force levered longs to capitulate, ahead of the Japanese open where a bloodbath is expected to take place (see below). One can see the algo in action in the red boxes below: exact same time every day, exact same sell-momentum ignition.