From the transaction log, there is no bid and ask change for quite a long time before the closing bell...
Let's say it did happen, it can be someone used market order sell and got ripped off...
It can also be omeone has entered to buy at 0.53, and at the same time, the bid above it went away at the same time...
Maybe someone want to sell it AON below the bid, and the MMs took it in a second.
It can also be... you're too tired, that's an illusion :-)
However, I don't think it's because MMs don't want any more sellers getting through... just doesn't make sense to me somehow.
Hope this helps.
signed,
Bernard
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