<p>Like I said before, this probably is because of when this was done, but I was just an authorized user and not a co-owner on my mother’s card and I received its entire credit history as my own on my report.</p>
<p>It could be different now since, like I also said, the banker at Wells Fargo was shocked to see the history there as was I after he had told me it wouldn’t show up as an authorized user. But it did show up. In fact, it still does as I was never removed as an authorized user.</p>
<p>Not trying to argue since I don’t doubt the rules have changed on this, but just pointing out that it at least used to be authorized users gained the credit history without being co-owners :)</p>