Spousta webu a knih tvrdi, ze chart patterns se opakuji s urcitou pravdepodobnosti:

Many critics of stock trading by chart patterns will say that this borders on the fringe of trying to “predict” the markets, and they say that it’s a sophisticated form of “fortune telling”, so to speak. One thing is for sure: Chart patterns have a high probability of indicating price moves, but nothing—and I mean NOTHING—is 100% guaranteed. Chart patterns are simply a way for the average investor to properly position himself for a greater probability of making a profit in this dog-eat-dog world of stock trading.
Pak je taky spousta strategii, ktere jedou ciste podle technicke analyzy a sledovani ruznych patternu/formaci.