As can be seen in the chart below, we broke through the lower trendline on a triangle that had been forming since 10AM.  Since then, the triangle's suggestions have been heeded and selling ensued.  We're not at the lows of the day yet, but we've fallen far enough that we may see a few reprices for the worse due to MBS.  Nothing is catastrophic at this point, especially considering many lenders came into the day in fairly safe positions owing to Friday's weakness, but a modicum of risk exists nonetheless.

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Update 1

Getting to be a more significant reprice threat now.  Reprices for the worse are likely