Got'cha, thank you so much, Oddlot.
I remember certain days when my orders went through but didn't show up on the Times and Sales tab on Thinkorswim till later, and often they reversed the order (bundled my order with others and made a sell look like a buy because they had moved the ask down, then printed my order, etc.)
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I have been using accumulation/distribution, but I'll try OBV next to it, see what happens.
Once again, thank you and best regards.