Cerebras Systems achieved a remarkable entry into the public market on Thursday, completing a substantial $5.5 billion initial public offering. Shares were priced at $185 on Wednesday evening, significantly surpassing the initial expectations, which saw the anticipated range adjusted upwards from $115-$125 to $150-$160. The robust investor demand also led to an expansion of the offering size to 30 million shares.

Upon opening for public trading, the stock immediately surged to $385, more than doubling its IPO price with an impressive 108% jump. While it experienced a slight cooling to trade above $330 midday, it ultimately closed the day at $311, achieving an impressive $66 billion valuation. After-hours trading indicated continued upward momentum for the company’s stock.

At the initial IPO price of $185 per share, Cerebras commanded a fully diluted valuation of $56.4 billion. This significant milestone also substantially boosted the personal fortunes of its leadership. Co-founder and CEO Andrew Feldman’s stake was valued at nearly $1.9 billion, while co-founder and CTO Sean Lie’s holdings reached approximately $1 billion at the offering price. Should the stock price maintain its position above $300, the valuations for both the company and its founders would be considerably higher.

However, the journey to this successful market debut was not without its challenges for Cerebras, a formidable competitor to Nvidia in the specialized AI chip sector. The company, renowned for designing its large-scale AI chips from the ground up, initially sought to go public in 2024. Those plans were put on hold due to intense scrutiny from the Committee on Foreign Investment in the United States (CFIUS), which reviewed a substantial investment from Abu Dhabi-based Group 42. Investor confidence was also tempered by Cerebras’s financials at the time, as Group 42 constituted nearly all of its reported revenue, leading to the shelving of its initial IPO ambitions.

A significant turnaround in April reignited the company’s public offering aspirations. Cerebras reported a dramatic improvement in its financial health for 2025, with revenue nearly doubling to $510 million—a 76% year-over-year increase—and notably, originating from a more diversified customer base. Furthermore, the company swung from a substantial loss of almost half a billion dollars in the prior year to a considerable net income of $237.8 million. This financial resurgence positioned Cerebras as a leading provider of chips for AI inference, the crucial processing required for AI models to respond to user prompts. Its expanding roster of clients now includes prominent names such as OpenAI (through a complex reciprocal arrangement), G42, Saudi’s Mohamed bin Zayed University of Artificial Intelligence, and Amazon Web Services, solidifying its market presence.