homer, you can't go by the shares you see thru $2.50. The MM only show the best bid and ask price, but that same MM might have (most likely does) have other bid/ask buyers/sellers, so there are alot more shares thru $2.50. The only way to see all the shares that are there is to be a MM and have access to Level 3 data.
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Disclaimer: Of course, all of this is my opinion and you should not make any investment decisions based on my opinion. I have not received any non-public information.