Does anybody know of a good free simulator out there which allows you to trade on yesterday's data, for any given stock, make trades, track profit / loss etc. I am currently using Cybertrader, which is free and has no time limit; however lately it has been showing the same day's data over and over again day after day.
Try Tradecast. www.tradecast.com. Demo only lasts for 2 weeks but you can keep changing login name and password as many times as you want.