This trading isn't surprising. There are some who wanted out at 15 and 16 and couldn't easily do so last week, so they are taking advantage of the news to do so. Others see selling and assume it is "selling on news", so they sell too. Usually, things settle around 10:30am eastern and that is when you get a true sense of direction. Based on what I have historically seen, you should see a decent uptick into the high teens starting around 10:30 or 11am.
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