the platform sits on the NASDQ electronic trading board...
if they bought more than they sold where does the left over go...
if they sell more than they buy it comes out of the inventory they have or can get from other MMs...
It is also legal for them to sell shares they don't have and then they have (I think) have 4 days to cover by buying.. This is legal short selling however they always covered with no failure to cover I can remember...
Their job is to keep the market liquid...
How many years now have they been buying more than they have sold?
This is not the NYSE and even there they had specialist that would cover wild ass runs.
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