UBSS is the market maker for Schwab. Back in those days anyone who put in an order through Schwab would automatically be routed to UBSS — which was a very good thing. Unlike NITE, ETRD, and the rest, Schwab/UBSS had no real interest in trying to make money off of the pinks. They just routed the orders for their clients. And since they had no interest in trying to make money they never kept the shares for themselves. They simply matched buyers and sellers. Making money on the brokerage fees but not on the spread — which is as it should be since ACCR (like most pinks at that time) were "unsolicited".
Unfortunately, UBSS decided in 2009 it was just not worth it anymore to even fool with the pink sheets. Schwab orders are now routed to the usual scammy suspects. Imo, that's one of the reasons people stopped playing the pinks as much. The scammy MM's got even more control.
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