A scary slide in a shortened trading day on the 23rd has once again produced a nice gain for DN traders. I did notice some weirdness 90 minutes in to the day when the Qs were down 1.2% and QLD was only down 1.7% ...when properly balanced leveraged should have made QLD down 2.4% , our trade trigger. Needless to say, by the end of the brief 3 1/2 hour trading day the QQQ/QLD skew had returned to the expected 1:2 ratio.