Nothing, really. These trades are executed by brokers who choose to participate in the Gray Market. They're simply matching trades. Anyone can still enter a trade with a broker (as long as the broker chooses to participate) and they'll try to find someone on the opposite side of the deal.. I've gotten a couple orders filled in 6 to 8 minutes, sometimes half a day, and sometimes trades don't get executed at all...
There are no market makers involved... The next trade could get executed at a half a cent..... and the one after that could be at
.0001... you never know...
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