I am working on my client's 2018 returns and there were a few transcations of Time Inc. & Time Warner Inc. that have no records of basis. According to the client, he bought AOL in the 1990s and did nothing with it (he did not sell or buy more shares).
Do you know where I can find the capital change records? I remember I used to work for a firm that had a book on capital change of all the stocks. But now I am on my own. I try to look online but the info is incomplete. Any help is appreciated.