here is one of my major trading issues: i use firstrade and zecco for trading stocks. now when you buy a stock and sell like 1 hour later you can use that same money for another trade later in the day. not for 3 days actually. i'm not sure why this is since im using my money to buy it. i dont have margin. are there any brokers that will let me do multiple trades in a day. low commissions is a plus. thanks for the recommendations.