HPIL Holdings (HPIL)

[shotsky]

All MM's will buy your shares if you sell into their bid. They HAVE to. And their spreads are all different.
The first mm 'wins', which is a primary reason it's automated. A person doesn't choose what to buy or sell - their spread does it. If you choose to buy within their offer, you will get the shares - they HAVE to sell them to you, even if they have to borrow them from someone else.