A well-known investor's total US stock holdings by Q3 2025 are approximately $14.679 billion, with the top ten holdings accounting for 99.51%—this level of concentration is more extreme than many people imagine.

The most exaggerated in the portfolio is Apple(AAPL), accounting for 60.42%, making it a solid cornerstone and also the biggest profit contributor. Closely following is Berkshire(BRK.B), with the holding ratio suddenly jumping to 17.78%, a 53.53% increase—market turbulence is seeking certainty, and this adjustment in allocation speaks volumes.

The counterexamples are also quite interesting. Alibaba(BABA) and Nvidia(NVDA) both reduced their holdings by over 25%, but Pinduoduo(PDD) remained unchanged, and even a new position was added in ASML(ASML). What does this indicate? When US stocks reached high levels, he was not greedy, preferring to miss some quick profits to ensure a solid asset structure.

This logic is actually very clear: buying stocks is buying companies, not relying on frequent trading to prove how smart you are, but earning money that you can understand. From recent portfolio adjustments, this investor’s restraint and calmness are truly worth pondering—earning less quick money in exchange for overall stability, especially during market frenzy, is particularly rare.