Turbotax is a tax program, not an investment program. Even professional tax programs do not have the ability to account for spin-offs without information inputted by the preparer from documents received from the taxpayer. You'll also note that the Form 8937, mentions that other methods can be used. That's why brokers don't do the work. They leave it to you to use either the suggested method or some other.
since it was tax-free except for the sale of fractional shares the date acquired is the same as the GE stock.
