Tell me more about your Holy Grail. Be specific with numbers, details, processes, metrics, history. How Holy is it....is it very very Holy, or modestly Holy, or only a little Holy, trace Holy
The more you worry, the more $$$ you lose. Wait till you earn a million dollars. Then start to work on setting traps here and there.
Simple answer. Split the trade into 2 parts, then trade each part with a different broker. Yes, the margin goes up, but that can be reduced by adding another leg. Both the brokers will think you're an asshole when looking at the trade, but neither of them will be able to figure out what you are really up to by looking at only 1 piece of the jigsaw.
I remember when MS electronic Options Market Making was the #1 firm in the US. Citadel and Timberhill were players. We aspired to be MS, but couldn't get to that level. Now from that era, only Citadel is left.
Absolutely YES. They might not use it, but they will look at it and take anything useful, and then give you lip service about the policies protecting you. The biggest losses I have taken were the direct result of illegal stuff from wealth management groups BofA, UBS, Well Fargo. It was not the manager directly, but more the trading desks they interacted with. The trading desks treat the wealth management group clients as a sheep factory to harvest. I am sure the trading guys harvest from where ever they can. The bottom line is you will never be able to prove it, and they know that, let alone take action against them, and they know that too.
OP, do you really care? Let's say you have 2 options: 1. Being profitable but they use your data. 2. Losing money and nobody gives a shit about your data. I think the choice is obvious. But just to confuse them, occassionally throw in a big loser.
Thank you very much for your advice and info. I agree with your "bottom line", which is what I see. I am trying to make every trade with Schwab and in the process of opening second portfolio margin account in Schwab, because the trading volume with E-trade is getting too big and that makes me nervous.