Not much, it's simply the same shares churning again and again, and don't trust "the float," work the trade, since MMs/large brokerages (CDEL, etc) trade "naked" shares that don't even exist, as long as they are willing to cover them by end of month.
Standard practice, done all the time, to keep the market liquid, as long as, as I said, the MM's firm accepts the responsibility to make good on it, which they always do.
Happy trading!
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