Nat2
Level 2

Deductions & credits

It appears that the only caveat is if the stock was held for less than a year - then it is treated as a short term cap gain and you can only claim your basis.

 I agree it is a problem/glitch with Turbo for constraining how to enter donations of appreciated stock held longer than a year without needing to enter a basis and specific dates (in our case it would be many dates over a few decades.)