Quote from thrunner:
Options market makers gladly take your money when typically 80% of options expired worthless. It is interesting how they resort to lawsuits when they lose a position eventhough they are the ones setting the pricing of options. It seems like a lack of hedging on their part in this and prior cases (hint, buy or sell the underlying stock if you have too large a position in naked options). If you can't even manipulate the options prices (by setting the price as a market maker) and make money, you shouldn't be in the trade. Get over it Peterffy and IB. That said, so far IB does not appear to be another Refco.
We all benefit when markets are regulated to protect us against fraud and other criminal conduct. Such protection reduces the risk of using markets, and so, it provides an incentive for market participants to take the limited risks of providing liquidity, and thereby reducing transaction costs. You are assuming, without giving any basis, that the IB Chairman's complaint about manipulation has no validity. Your philosophy seems to be that criminals, frauds, and manipulators should be permitted to run amok in our markets, without any restraints whatsoever, and that complaints against them should just be dismissed without any investigation or consideration. I think your position is totally unreasonable, and that if your policy were ever adopted officially, it would wreak havoc on financial markets and on entire economies.