I'm trading the E-mini S&P 500 on the CME using the Basic Entry Window. Last night I left an open (short) position overnight for the first time with an OCO buy stop order above the market (my stop loss) and a buy limit order below the market (my profit target).
This morning I found I was filled on both. On enquiring with my broker he said that CME does not support OCO orders, so I suppose that NT has been simulating these intraday as I've never had problems with OCO orders during the day.
I was surprised that NT accepted my OCO GTC orders or even if it did, there was no warning that the exchange I was trading on did not accept the orders. The OCO orders showed as working before I shut down.
Please could you comment on this. Also, if I had left NT running overnight, without shutting it down, does this mean that NT would have simulated OCO and that this is the way forward if I want to use overnight/GTC OCO orders.
Thanks
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