Altimeter adds new $2B stake in Cerebras, trims Meta holding by 31%

Altimeter Capital Management added a new position in Cerebras Systems worth approximately $2 billion and cut its Meta Platforms stake by 31%, shedding around 20,000 shares in early 2026, according to its latest 13F filing. The firm also added exposure to SpaceX and four unnamed semiconductor companies. The moves signal a shift toward AI infrastructure, as Altimeter's total public equity portfolio stood at about $5.7 billion as of Q1 2026.

Via g-w.studio Altimeter adds new $2B stake in Cerebras, trims Meta holding by 31% Brad Gerstner's firm doubles down on AI infrastructure while rotating out of social media in its latest 13F filing Brad Gerstner has been making moves, and the latest 13F filing from Altimeter Capital Management makes the direction unmistakably clear: bet bigger on the compute layer, trim the social layer. The firm added a new position in Cerebras Systems worth approximately $2 billion and simultaneously cut its Meta Platforms stake by roughly 31%, shedding around 20,000 shares in early 2026. The filing also reveals fresh exposure to SpaceX and four newly added semiconductor companies. Altimeter’s long game on Cerebras finally cashes out Altimeter’s relationship with Cerebras is not a new story. The firm first backed the AI chip company during its Series D round back in 2018, making it one of the earlier institutional believers in the company’s vision of building chips purpose-built for large-scale AI workloads. That conviction compounded over the years. When Cerebras raised $250 million in its Series G round in September 2025, Altimeter was again in the room, participating in a round that valued the company at $8.1 billion. Then came the IPO. Cerebras went public in May 2026, and the company reached an estimated valuation of approximately $100 billion at launch. Earlier attempts to list had been paused due to market conditions, so the eventual debut carried the extra weight of anticipation. For Altimeter, the post-IPO increase in Cerebras exposure is a continuation of a thesis that the firm has held for nearly eight years. The new position size reflects both the company’s dramatically higher public valuation and Altimeter’s apparent confidence in AI compute infrastructure. What the portfolio shift actually signals The SpaceX addition is notable. SpaceX is not a publicly traded company, which means Altimeter is accessing it through secondary markets or pre-IPO vehicles. Altimeter’s total public equity portfolio stood at approximately $5.7 billion as of Q1 2026, with existing anchors including Nvidia, Uber, TSMC, and Microsoft alongside the Meta position. The Meta reduction suggests that Altimeter sees greater potential upside in purpose-built AI infrastructure companies relative to large-cap social media at current valuations. Rotating from a platform that is applying AI to a company that is building the hardware AI runs on is a direct expression of where Altimeter thinks value is created in this cycle. The semiconductor additions reinforce the same logic. The four semiconductor companies added to the portfolio were not individually named in available filings, but the pattern of simultaneously adding an AI chip company at scale, entering SpaceX, and picking up four semiconductor names points consistently toward AI infrastructure exposure. Disclosure: This article was edited by Editorial Team. For more information on how we create and review content, see our Editorial Policy https://cryptobriefing.com/editorial-policy/ .