I sold Intel just a few days before the U.S. government announced their investment. It was sold via a covered call, which I thought was a fair price at the time.
My thesis was that Intel being the sole national champion of semiconductors would never find itself facing bankruptcy and that the U.S. government would do whatever it could in its power to support it. I never imagined that the government would become an equity investor, though. My holding period was quite short, at around six months.
The lesson I learned is that it takes a long time for a thesis to play out, especially for a capital intensive business like Intel. I should not have exited after making only a 20% gain if I had conviction in the stock. Drunkenmiller said it best: Position size matters. In this case, it wasn't a massive position but when I sold, I felt a bit of validation that I was "right" and made some money.