funkws said: Thanks for the replies, but I guess I did not provide an example to clarify what is happening. Quicken records the cost of each lot as obtained. The broker also reports the sale by lot at time of sale - so there is a 1 for 1 match by lot. This information shows up on the 1099, which also divides the lots by holding period. In the case I am trying to describe, I have one lot January 2021 which was a dividend reinvestment of $3.78. Quick carries the lot at that cost. However, since the entire holding was sold 2 months later, this is a short term sale with no transactions between the purchase and the sale. Quicken reports a new cost basis for the lot, while the broker reports the original cost. I looked at lots on Quicken with similar sizes, and they have significantly different cost bases, so I am assuming both Quick and the broker are not using average costs. Bottom line is I can go with the broker on all covered lots, but I need some way to provide evidence of bases for the uncovered lots.
funkws said: Thanks for the suggestion, but this is a common stock, not a fund. The edit security details shows "Average cost per share" as "N/A" (can't update it).
funkws said: Screenshot attached
funkws said: Sherlock - Security detail window attached. (I don't see much there. Let me know if you were looking for something other than what I captured.)