We have to understand why any pattern works.How does VWAP gap pattern work ? Here suppose the market is coming down and there is a VWAP gap it means bears are in control....but they will press the accelerator and leave the positions overnight squeezing the bulls and forcing them to run for cover only if they are confident of trend for next day.But with the current uncertainty in international markets,even bears with winning position are not willing to press sales and leave the position open as there may be a upside gap next day opening and that is why bears though in commanding position,look to book profits near the end of the day and that gives a upward movement .....so the strong side prefers to take profits instead of holding overnight and trapping the side which is trapped on the wrong side and hence the pattern does not work in such volatile environments when traders are not sure what the market will do at open the next day..
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