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Re: zombywolf post# 44326

Tuesday, 01/31/2017 5:47:59 PM

Tuesday, January 31, 2017 5:47:59 PM

Post# of 203913
MMs make $$$ by buying shares from you and selling to me. In theory they make profit twice on each and every transaction. In practice, one MM might buy and another might sell. But over the course of a trading session the number of transactions generally net flat.

So on a tight spread they make a penny per share. Buy 100 shares at $10 from you, and sell those same 100 shares to me for $10.01.

When a stock is in play and volatile, like OWCP today, the spread widens and they make more money on each trade. Buy for .50, sell for .53 Boom. 3 times the profit.

The stock doesn't matter. The spread matters and when a stock is in play the MMs literally are printing money.