How exactly is it that "it happens" as you say ??? . . . and how do the easily cancel that trade? What about all the stop loss shares that were erroneously sold as a result of that "one time glitch", how do they fix that? Enlighten me on this "one time glitch". Is this a software bug? Looks more like an attempt to play with bid and ask price to drop the stock price. They may very well have not wanted it to be that visible or perhaps they did want it to be highly visible to sow fear doubt and uncertainty to quell the momentum pushing the price higher.
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