Why can't I ADD a stock to a brokerage account with a
negative Cost Basis? Such things can happen due to Return of Capital payments by the company.
(ADD transactions are necessary for transferring stocks with a negative basis between accounts.)
Also, why can the back-dated BUY transaction used by Quicken for a stock spin-off have a negative price? Again, if the original stock had a negative basis for me, then the implied purchase price of the spun-off stock should also be negative.
The best work-around I have found is to use a $0.00 cost basis followed by a RtrnCap(X) for the actual basis. Unfortunately, as described in
https://getsatisfaction.com/quickencommunity/topics/qw2016-problems-with-return-of-capital , this can result in mis-allocation of the bases if I have more than one lot of the stock. Sigh.