Quote from IV_Trader:
Rally , the quote will start at 1.30-1.35 , but then one can enter(cannot do it now) 1.31 for a bid
Quote from wilburbear:
The theoretical value algorithms of market makers will go a penny ahead of your clever bids. When you cancel, theirs will automatically cancel. This is automated and could continue indefinitely. You will have the cancel charge, they will not.
Automated penny improvements by market-makers is very dangerous, unless you're taking offers and hitting bids, which means, for most people, you're giving up a theoretical value edge as soon as you hit your mouse button. Comment to the SEC.
This industry does not give up profits for the shear joy of losing money. One of the top 20 options professionals in the country personally took me aside, and said the real reason for pennies was to eliminate payment for order flow, because options professionals will not pay for order flow denominated in pennies. Comment to the SEC.
One customer does 50 trade, 40 cancels, 10 fills, IB will charge him for 30 cancellations.Quote from alanm:
Option Trader: IB may make a fortune on cancellation charges.
wilburbear: Strongly agree.
Why do you think IB makes a profit on these charges? AFAIK, they are passed through from the exchanges.
Quote from Option Trader:
One customer does 50 trade, 40 cancels, 10 fills, IB will charge him for 30 cancellations.
Another customer does 50 trades, 40 fills and 10 cancels, IB will not pay him.
WIth the exchanges, IB will not pay a dime, because it's 50 fills and 50 cancellations.
Some traders have few cancellations and lots of fills (e.g. buying at bid, selling at ask) and some traders change their orders, the net affect is the mass majority of canellations are neutralized between IB and the exchanges.Quote from alanm:
Why is this representative of the true distribution of orders/cancels/fills, though?
Quote from rallymode:
I understand that, but i was wondering whether mav thought it was likely that the spreads tighten to the penny level when they start ticking in cents.
Quote from IV_Trader:
maybe true , but not on event related trades ( and that's all what I care).
For 1.30-1.35 scenario , I will enter 1.34 ask and SOMETIMES will get a retail trader that match it. Currently , I MUST sell for 1.30 if I want to exit. Again , I am talking trades with unusual volume pace.