Ok, so I trade with TDAmeritrade. I have a small problem. I want to trade my entire account. I have 30k, and I do the max 4 to 1 intraday about 120k. I put all my money into one stock, however TDAmeritrade doesn't calculate the amount of shares I can purchase automatically. It takes me about 25 seconds, to switch from one screen to another then to calculate how much I can buy. That's a ton of wasted time. Is there any broker or way I can set this up faster? The amount of money I have in my account is constantly changing because I am always in and out.