What is the best stock trading simulator site for free?
You noticed it correctly that investopedia trading simulator falls short as far providing fully simulated brokerage experience. They for example simply have a notion of “account” without distinguishing between “cash account” and “margin account” which work quite differently. You can do short selling in investopedia simulator, but they do not truly simulate all brokerage rules involved in such transaction. I would suggest checking out VivaTrader. It has quite interesting stock trading simulator – all online – no need to install anything on your computer. They do produce monthly statements just the way real broker would do for you. They meticulously simulate most, if not all, aspects of margin account including charging interest, paying inertest, margin calls and etc. As a side benefit they have quite advanced charting, interesting trading blog, stock scanners, and alerts… Have fun!