Quote from LeeD:
1) As a backup in case one of the brokers has technological problems
It's a good idea to have a back up broker but it makes no sense to trade in both, particularly a covered put where if done in separate accounts there can be margin issues.
2) To hide the actual position from both brokers
Why would a broker care what you have in another account elsewhere?? (eye roll)
3) There may be some commisssion/liquidity considerations... like one broker may offer pre-market size for stocks while the other broker is generally cheaper.
I wasn't aware that brokers offered size. Somehow I thot that they were intermediaries b/t buyers and sellers
