When looking at the index futures (ES,NQ,YM,ER2 and some smaller ones) and also at the according ETFs (SPY,QQQQ...) you see very high correlations. This applies also to some more exotic and the "bear" ETFs. On a major turning point of ES, NQ follows always. Same with the others. This is easy to see in hindsight. How do you take advantage of this? Did you find ways of using these multiple information channels to verify in realtime your suspicion that one of those turning points is coming up? I tried (by means of a program) to compute something like a synthetic averaged future symbol which included all the information (price and volume) coming from the various symbols (futures and ETFs). This approach led only to more noise. Did you find a way to reduce noise?