The major indexes started strong but finished weak ahead of two-day testimony by Fed chair Powell. The S&P 500 and Nasdaq composite remain above their 21-day moving average lines but the Dow Jones Industrial Average hit resistance at its 50-day line. But there were still pockets of strength including a move above resistance for Splunk, a flat-base breakout by MercadoLibre and a setup continuing for Lantheus.

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