cintrix Wednesday, 10/04/17 07:26:28 AM Re: kaos2k post# 4943 0 Post # of 5213 I didn't know there were conflicts with Mac's and trading platforms. Did you try Etrade Pro? I have used multiple brokers at one time if that is what you are asking. You can do it if you have enough money so that you can have a margin account over 23k in each. If you don't I highly suggest you keep your money in one account so you don't have to worry about pattern day trading rules.