Here we can see the drying up of selling pressure in the NYSE TICK, as noted in the recent Twitter posting. What we're looking for are shifts in the distribution of TICK values. Many times this will show up as higher lows (as selling wanes) and lower highs (as buying dries up). The key is to see if buyers then step up as sellers lose conviction. That did happen, as price returned to its volume-weighted average price on the day.
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