It has been a few months since my last analysis of UnitedHealth Group Incorporated (UNH). At the time, there was no news that Warren Buffett had initiated a position in the company. I believe that having autonomy in one's opinions is very important, but obviously, having a major investor endorse the investment case is very positive.
My investment case was clear: Q2 had been disastrous, the environment was bad, but the margin of safety was large enough, and signs of execution improvement, together with UNH's moats, made the case compelling even with so many uncertainties.
Coincidentally, that last article was close to UNH's low, near the price of $244. Another coincidence is this excerpt from the article: