Yes, maybe.
They may even shake it AFTER earnings are announced depending on exactly when the announcement is released.
If it is released before the open, MMs could sell hard at the open to make people think there is disappointment, that there is a sell off, to trick weak hands into selling their shares.
The above, however, could only work if volume is low. If we get heavy upside volume, MMs will have to either step aside or join the party - or get flattened by a freight train (my preference;D).
Just a little heads up.
Tick tock...tick tock....
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