Robert Morse
Sponsor
Hi Tango29. I'm an X-market maker. I was a small independent player on the AMEX. Very small vs the large MM groups. Size is not a problem as long as there is edge and it can be hedged with the underlying. It is just that simple. Deep in the money options with an hour to go, give me 3 to 5 cents under parity and let me sell stock, I would have bought almost any volume of calls. Open interest to a MM means nothing. I was in the AAPL crowd on the AMEX for almost 25 years. (I also traded other symbols at the same post) The last time I was on the floor was 2010 and we, as crowd, were 2000 up on most OTM calls/puts $0.05 wide. 1000 up on ATM options and 200 to 500 up on ITM options. The problem is when you see penny wide markets from 16 option exchanges and you expect the NBBO, which can be small customer orders, to offer an edge to an automated MM. And, during times of stress, their systems will want to make sure it can hedge, so a 1000 lot might get executed in 5 to 10 lots. Large orders in almost any stock have a market impact. Does that help?