IB: I shorted 1 mini SP; IB says I'm down more than $10,000

I know! There's no harm intended. The BS is too strong to let it pass, we must make a comment.

 

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THAT; or if he is a night owl type, most anything @ night.......20 years @ IBKR, he may have figured it out by now.

 

I have done the same for many times without ever seeing a discrepancy. I think when you consider the instrument specific reset times you will realize that all the data is absolutely correct.