This article first appeared on GuruFocus.
Duan Yongping (Trades, Portfolio), a renowned investor known for his strategic and value-driven investment approach, recently submitted his 13F filing for the fourth quarter of 2025. This filing provides a detailed look into his investment decisions during this period. Operating from Menlo Park, California, Yongping is celebrated for his ability to identify undervalued opportunities and his long-term investment philosophy. His latest filing reveals significant adjustments in his portfolio, reflecting his keen insights into market trends and potential growth areas.
Duan Yongping (Trades, Portfolio) added a total of three new stocks to his portfolio. The most significant addition was CoreWeave Inc (NASDAQ:CRWV), with 299,900 shares, accounting for 0.12% of the portfolio and a total value of $21.48 million. The second largest addition was Credo Technology Group Holding Ltd (NASDAQ:CRDO), consisting of 141,300 shares, representing approximately 0.12% of the portfolio, with a total value of $20.33 million. The third largest addition was Tempus AI Inc (NASDAQ:TEM), with 110,000 shares, accounting for 0.04% of the portfolio and a total value of $6.50 million.
Duan Yongping (Trades, Portfolio) also increased stakes in a total of six stocks. The most notable increase was in NVIDIA Corp (NASDAQ:NVDA), with an additional 6,639,300 shares, bringing the total to 7,237,100 shares. This adjustment represents a significant 1,110.62% increase in share count, a 7.08% impact on the current portfolio, and a total value of $1,349,719,150. The second largest increase was in Berkshire Hathaway Inc (NYSE:BRK.B), with an additional 1,984,896 shares, bringing the total to 7,176,196. This adjustment represents a significant 38.24% increase in share count, with a total value of $3,607,114,920.
Duan Yongping (Trades, Portfolio) also reduced positions in five stocks. The most significant changes include a reduction in Apple Inc (NASDAQ:AAPL) by 2,470,600 shares, resulting in a -7.09% decrease in shares and a -4.29% impact on the portfolio. The stock traded at an average price of $268.66 during the quarter and has returned -3.04% over the past three months and -4.61% year-to-date. Additionally, he reduced ASML Holding NV (NASDAQ:ASML) by 70,100 shares, resulting in an -87.63% reduction in shares and a -0.46% impact on the portfolio. The stock traded at an average price of $1,043.79 during the quarter and has returned 37.96% over the past three months and 31.53% year-to-date.
