IB introduced their "Advisor Account" platform a while ago for those who want to trade several accounts with one click of a button. Basically, you can allocate each account the number of shares/contracts you want to trade in advance. Sounds good huh? I have been using it for several months and my experience is negative - today I decided to give up and transfer my accounts leaving IB. Just one example: let' say that yesterday I traded 10 contracts (on each acct). I shorted 10 and later I covered 10. The TWS clearly indicated that there were no open contracts left - in the Execution window you can see the details of all 10 contracts you purchased back. So far so good. Today morning everything is looking just fine and normal, you think you are flat - until you start to check the individual accounts and be shocked to see that they all have one contract open position - most of them are short and one of them is long!!!!! The one long made some money today, all the shorts lost! Obviously the way the platform handles the allocations is not correct and more importantly the real time feedback is not working. In plain English: if you use the AdvisorAcct platform, be ready for some nasty surprises! I have made screenshots on several occasions - so I can prove everything I am saying here.