To take retail investors outThe market maker does not have to put down the retail investors out everday, All he has to do is hit the retail investors at the right time then most retail investors will give out and take their loss.
One important fact to know reatil investors do not represent much for the market maker profits. And hedage funds will do everything to eliminate retail investors.
So the market maker then deos all his pricing towards profiting the hedge funds that are his main profits.
Last Tuesday all retail investors were taking down. Making sure than mainly only hedge funds profit today.
Lots more going on to eliminate reatil investors but it would require a truly rvised article by my staff
Ian Barter