Interesting movement at the close. Rather like a "flash crash" driven bounce. But on a minutes rather than microseconds time scale. But after the close. US equ

Interesting movement at the close. Rather like a "flash crash" driven bounce. But on a minutes rather than microseconds time scale. But after the close. US equity futures have continued an acceleration to the downside. And Japan's Nikkei index futures are -8% before the open. Technically the key level to watch is just under $2500 on the S&P500. Any sustained break below that moves us beyond mere correction territory.