David Tepper Triples Micron Stake While Cutting Nvidia and Alibaba Holdings

Why It Matters

Tepper’s aggressive scaling of Micron signals a vote of confidence in the memory‑chip segment of the AI supply chain, a sector that has historically lagged behind GPU makers in investor attention. By contrast, his trimming of Nvidia and Alibaba highlights growing caution about high‑multiple AI stocks and exposure to Chinese regulatory risk. The reallocation could prompt other institutional investors to reassess the risk‑reward balance between memory suppliers and AI chip designers, potentially reshaping capital flows in the broader technology and semiconductor markets. Moreover, the shift underscores the importance of valuation discipline in a market where AI hype has driven several stocks to lofty multiples. If Micron’s earnings and margins continue to accelerate, it may become a benchmark for evaluating other memory and storage companies, while a slowdown at Nvidia could temper the exuberance that has propelled many AI‑related equities.

Key Takeaways

• David Tepper added 1 million Micron shares, tripling the stake to 1.5 million shares.
• Micron now ranks as Appaloosa’s fourth‑largest holding by market value.
• Micron’s Q1 gross margin rose to 56 % from 38.4 % a year earlier.
• Appaloosa trimmed Alibaba by 57 % in 2025, selling 1,312,069 shares.
• Nvidia was removed from the fund’s top‑five holdings after four consecutive quarters of selling.

Pulse Analysis

Tepper’s portfolio reshuffle is a textbook example of a contrarian tilt within a sector that is otherwise dominated by hype. By moving capital into Micron, he is betting on the less glamorous but essential component of AI infrastructure—high‑bandwidth memory. This play aligns with a broader market narrative that the AI supply chain is only as strong as its weakest link, and memory shortages have already forced data‑center operators to pay premium prices. The forward P/E of 9 suggests that Micron is still undervalued relative to its earnings trajectory, a rarity in the current AI‑driven rally.

Conversely, the decision to cut Nvidia and Alibaba reflects a disciplined approach to valuation risk. Nvidia’s valuation, buoyed by its AI leadership, now sits at multiples that many analysts deem unsustainable without continued explosive growth. Alibaba, while cheap on a price‑to‑earnings basis, carries geopolitical and regulatory headwinds that can erode investor confidence. Tepper’s actions may encourage other value‑oriented managers to look beyond headline AI names and focus on the underlying hardware that fuels the sector.

If Micron’s upcoming earnings confirm the margin expansion and demand outlook, we could see a cascade of reallocations toward memory and storage firms, potentially lifting the entire semiconductor supply chain. However, any slowdown in AI spending or a resurgence of supply constraints could reverse this trend. Tepper’s moves thus set a benchmark for how savvy investors might navigate the fine line between AI enthusiasm and fundamental valuation discipline in the months ahead.