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Ark Invest, the innovation-focused fund run by Cathie Wood, scooped up 78,756 shares of Cerebras Systems, adding to what has become one of the firm’s most aggressive position-building campaigns of the year.
The buy marks yet another accumulation in a string of purchases that started shortly after Cerebras went public. Ark has been steadily loading up on CBRS since the company’s Nasdaq debut.
Ark’s Cerebras appetite in context
This latest purchase isn’t happening in a vacuum. Ark has been building its Cerebras position methodically since the company’s IPO on May 13, 2026, when shares were priced at $185.
That IPO price turned out to be a launchpad. Cerebras closed its first day of trading at $311.07, a roughly 68% pop that signaled just how hungry the market was for a credible Nvidia alternative in the AI chip space.
Ark’s buying spree has been consistent. The fund picked up 124,905 shares in mid-to-late May, followed by another 111,989 shares on June 25. Then on August 13, Ark made its largest single purchase: 106,941 shares at $231.01 per share, a transaction worth approximately $28 million.
To fund these acquisitions, Ark has been trimming positions elsewhere. The fund reduced holdings in names like Palantir and Shopify, essentially reallocating capital into what it views as a higher-growth opportunity in AI hardware.
Why Cerebras matters in the AI chip race
Cerebras Systems isn’t just another semiconductor startup hoping to catch a wave. The company’s core technology, its Wafer Scale Engine, takes a fundamentally different approach to chip design than what Nvidia offers.
Most chips are cut from a silicon wafer into individual pieces. Cerebras uses the entire wafer as a single chip. The result is a processor with dramatically more compute power for training large AI models.
That architectural bet appears to be paying off commercially. Cerebras reported Q2 core revenue of $209.9 million, representing a 103% year-over-year increase. The company also raised its full-year guidance, suggesting the revenue trajectory isn’t just a one-quarter anomaly.
CEO Andrew Feldman has made the rounds discussing the technology, including appearances on Ark’s own podcasts. Ark’s Big Ideas 2026 report singled out AI infrastructure as a critical investment theme, and Cerebras sits squarely at the center of that conviction.
The bull case and the risks
Revenue doubling year-over-year at Cerebras is the kind of growth rate that gets innovation-focused investors like Wood to overlook near-term blemishes. Cerebras faces margin constraints as it scales production, a common challenge for hardware companies ramping up manufacturing of novel chip architectures.
The stock’s trajectory since IPO also tells an interesting story about valuation risk. Shares surged to $311.07 on debut day but have pulled back since then. Ark’s August 13 purchase at $231.01 per share was roughly 26% below that opening-day close, suggesting Wood is comfortable buying into volatility rather than chasing momentum.
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