Tick data could be different, and minute data could be different. If I recall right, I ran into an issue like that with CQG over Sierrachart. The local computer clock was not synchronized to the clock of the trading service, and it was an easy fix.
CQG provides very accurate data, so check your synch. but, I am not this your issue for sure.
There is a substantial risk of loss in futures trading. Past performance is not indicative of future results.
PM with any questions about optimusfutures (800) 771-6748 (561) 367 8686. THERE IS A SUBSTANTIAL RISK OF LOSS IN FUTURES TRADING.
@mattz suggestion is a great one, always make sure that your computer time is synchronized. Even if it doesn't fix this particular problem, it prevents others for sure.
Do you have the opportunity to check the cqg data in a second platform to check if it matches the MC result?
The following user says Thank You to ABCTG for this post: