Why would people want to use a Mon-Fri 9-5 exchange? I don't see any extra services that would make me want to trade there unless i'm missing something.
If you are a seller, you go where the buyers are. Wall Street has money, and if that money finds it's way onto the bid side of the Atlas order book, My BTC will find it's way to the ask side. That's a big "if" at this point, though.