Picking from the multitude of sector ETFs is a daunting task. In any given sector there may be as many as 45 different ETFs, and there are at least 181 ETFs across all sectors.

As you can see from our Big Chart, we have the classic "Spitting Cobra" pattern forming with the Nasdaq already breaking sharply lower, but saved by the 50 dma and the 27.5% line at 4,200-4,220.