Cerebras Systems completed a $5.5 billion initial public offering, with its stock jumping 108% on the first trading day. The AI chip maker's IPO marks the largest technology debut since the market cooled on new listings over the past two years.

The company designs custom processors optimized for artificial intelligence workloads. Its flagship Wafer Scale Engine chip contains over 900,000 cores on a single piece of silicon, far exceeding traditional processors built by Nvidia and AMD. Cerebras positions this architecture as particularly efficient for training large language models and running inference at scale.

The stock's immediate doubling reflects investor hunger for companies solving AI infrastructure bottlenecks. Cerebras competes directly with Nvidia's dominance in AI chips, but takes a fundamentally different approach. Rather than stacking thousands of smaller GPUs, the company builds monolithic wafers that reduce data movement between processing units. This cuts power consumption and latency for certain workloads.

The IPO comes as enterprise AI adoption accelerates. Data centers worldwide face constraints from limited GPU availability and soaring electricity demands. Cerebras' chips target customers building custom AI systems where performance per watt matters most.

A year ago, the company faced skepticism. The venture-backed startup had burned through capital and faced questions about whether its wafer-scale approach would ever reach commercial viability. The path to profitability remained unclear, with the company operating at losses.

The market's reception Tuesday suggests investor confidence that Cerebras has solved manufacturing at scale and proven real demand from enterprise customers. The company raised $5.5 billion at its IPO price, valuing the business at roughly $24 billion pre-IPO.

The stock surge signals the return of venture-backed tech IPOs after two years of frozen capital markets. Multiple AI infrastructure startups now have clearer paths to public markets. For