Hi, I am looking to understand how to trade stock futures in USA. I used to trade stock futures in India and know all about the risks associated with trading stock futures. What I wanna know is the following. 1) Where can I trade stock futures (example APPL, GOOG) 2) What are the lot sizes (I found out its 100 ... it that correct) 3) Do stock futures trade 24/7 (Sun - Fri) or 0900-1600 (Mon - Fri) 4) What are the initial margin requirement for opening a position per lot 5) What are the other costs associated ? Carrying fee ? 6) Which are the best platforms to trade stock futures. Thanking everyone in advance