I believe the confusion on closing price is due to the fact that the official close isn't at 4:00:00 EDT but it is at 4:00:59 EDT. Therefore any transaction up to 4:01 is counted. Therefore as posted by Nordic Viking in his post:
Not According to I-Hub Time & Sales Price Size Exch Time t 0.035 35000 OBB 16:00:34 0.035 83300 OBB 16:00:05 t 0.035 83400 OBB 16:00:04 0.0347 100000 OBB 15:58:46 0.0348 125000 OBB 15:58:44 0.0348 250000 OBB 15:58:24
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