Sold my position in Palantir today. I have a lot of reasons for it that I believe are legitimate, but at the end of the day, I felt like I broke two of my rules when I bought the stock in the first place.
1) I don't really understand the business. I like what I read - the research I did before buying led me down what I believe was a stable path. But all told, I sold myself a story I didn't intimately understand about a cyber security/mass data company. Basically, I bought it because I thought the stock would go up in the future. That isn't/shouldn't be good enough. I made a tiny profit by getting out when I did this morning.
2) Co-founder Peter Thiel is the antithesis of everything I believe the head of a company should be. He's probably a genius, of this I have no doubt. But I don't trust him - and I don't want to make money based on his whims. Besides my disagreement with his politics, his latest crypto pump and dump shows he's solely interested in his own wallet -- to the detriment of those who allow him to use their capital to fund other ventures.
Posting this to keep myself honest and to be transparent of my own foibles. I didn't lose money, and I wasn't in the stock very long, but I try to follow Peter Lynch's advice of only investing in what I know. Here's hoping I got better at that today.