The trade happened earlier in the day, probably as more than one trade. There were not 39M available at 7 when the trade went through. Whether it was a buy or sell is strictly speculative, though I would have to guess sell, because the price didn't reach 7 until the second half the day, and because the appreciation of the IFXY was about 60% today.
the trade itself was an MM, or preset order through a broker, that didn't settle the account until just before closing. It doesn't directly effect the price one way or another as it was probably a cumulative order that happened over several hours.
I hope that clears things up for people.
GL
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