However, a couple of hundred thousand contracts of volume on yesterday's SPY options expiring today disappeared without showing up as OI. Insider day trading, I suppose.
Sorry, but, I've just started collecting this info...no interpretation yet.
I just hope I don't forget to look at the OI daily. so as to trend this out.
I also, noticed something this morning in a put trade that I closed...the execution to close my position went too easily...without struggling to get there...if you know what I mean....So they may drop this thing, once they get it to a happy place for them to print a number
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