Michigan
Experience: Intermediate
Platform: NinjaTrader
Broker: Optimus/Vision & Stage5/Vision
Trading: Futures
Posts: 40 since Jul 2009
Thanks Given: 22
Thanks Received: 18
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One thing I have seen is that when back testing, both with market replay and with backtest in the strategy analyzer, when using limit orders, Ninja has to "guess" if you bid or offer is hit if price just touched your price. It looks to me to be somewhat random and evens out 50% with you and 50% against you. However in live trading, whether or not your bid or offer gets hit is more likely to be in the opposite direction of what you want. So in short, during back testing you get a 50/50 chance of your bid/offer getting hit. during live trading, it will be perhaps 80/20 against you.
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