Assume that only daytraders are left trading. Assume they all enter in direction of recent moves sometime after open. One would believe that they try to maximize profits by trailing or waiting til near close to close position, then on close close position and pull orders. What would market result be? I am guessing something like today’s price action might result. It is difficult to verify this, but perhaps the assumption is not too far off or just a case of fitting the theory to the facts after the fact?