Duan Yongping tests "AI trading": "Aggressively adds" NVIDIA, "newly enters" CoreWeave, Credo, and Tempus, "significantly cuts" Apple

While significantly reducing his position in the largest holding, Apple, renowned investor Duan Yongping increased his position in NVIDIA by over 11 times in Q4 and lightly tested three representative AI vertical companies.

Data shows that Duan Yongping increased his holdings in six stocks in Q4, with the largest increase being in NVIDIA, and the second largest increase in Berkshire Hathaway; at the same time, he reduced his holdings in five stocks, with the largest reduction being in Apple.

This value investing mogul, known for heavily investing in NetEase, Moutai, and Apple, is using real capital to build a deep position in the era of artificial intelligence.

"Aggressively adding" NVIDIA, "new entries" CoreWeave, Credo, and Tempus

Documents show that Duan Yongping increased his holdings by 6,639,300 shares in Q4, a staggering increase of 1,110.62%, bringing his total holdings to 7,237,100 shares, with a market value soaring to $1.35 billion, making NVIDIA the third largest holding in his portfolio (accounting for 7.72%).

In addition to heavily betting on "water seller" NVIDIA, Duan Yongping also opened positions in three "new faces." Although the total position accounts for only about 0.28%, the stock selection logic is extremely shrewd, precisely covering three key nodes in the AI industry chain: computing power, connectivity, and application:

• CoreWeave: The "landlord" of computing power leasing

  New entry of 299,900 shares. While all the giants are scrambling for GPUs, CoreWeave does not produce models but builds high-performance GPU clusters to lease to enterprises. This is a typical "shovel seller" company; although it faces financial pressures from heavy assets and high depreciation, it has strong bargaining power during periods of computing power shortages.

• Credo Technology: The "highway" of data centers

  New entry of 141,300 shares. If GPUs are the heart, the high-speed interconnect chips and optical modules provided by Credo are the blood vessels. AI server clusters have extremely high requirements for data transmission speed, and Duan Yongping's move aims to bet on the certainty of incremental growth brought by data center upgrades, which is a "co-investment" highly tied to the iteration of AI servers.

• Tempus AI: The "ground experiment" of AI in healthcare

  New entry of 110,000 shares. Unlike the hardware attributes of the previous two, Tempus is dedicated to applying AI in precision oncology. This is Duan Yongping's attempt in the vertical application layer of AI. However, the healthcare industry is heavily regulated and has long cycles; although this represents the ultimate direction of AI's transformation from "computing power" to "productivity," profitability is still in the verification stage, resembling a test of endurance

Reducing Apple, Increasing Berkshire

While attacking AI, Duan Yongping has also made significant rebalancing of traditional "ballast" assets.

In Q4, Apple remains his top holding, with a market value of up to $8.797 billion, accounting for 50.3%. However, during Q4, he reduced his holdings by 2.4706 million shares of Apple, a reduction of 7.09%. This action may stem from risk control due to an overly heavy position in a single asset, or it could be to free up funds to increase investment in AI.

At the same time, as a defensive asset, Berkshire B has seen a significant increase in holdings. Duan Yongping bought nearly 1.985 million shares, an increase of 38.24%, making it firmly the second-largest holding (accounting for 20.63%). This structure of "left hand technology growth, right hand value defense" remains the cornerstone of his investment portfolio.

In addition, Duan Yongping has also increased his holdings in Google and Pinduoduo, while significantly reducing his position in the lithography giant ASML (a reduction of 87.63%), indicating a divergence in his judgment of the future growth potential of different tech giants