Cerebras Systems made a thunderous public debut, pricing its IPO at $185 per share—well above the $115–$125 initial range—and raising $5.55 billion, the largest U.S. IPO of 2026. The fully diluted valuation topped $56 billion, more than double its private valuation just three months earlier. Institutional demand was overwhelming, with orders exceeding available shares by over 20 times, forcing price and share-count hikes twice during the roadshow.
The company’s centerpiece is the Wafer-Scale Engine, a chip with 4 trillion transistors and 900,000 cores that packs the computing power of an entire Nvidia GPU cluster onto a single processor. Confidence was further bolstered by a $20 billion, 750-megawatt deal with OpenAI and a cloud partnership with Amazon Web Services, which included a $270 million equity purchase. Backed by $24.6 billion in committed future revenue—48 times its 2025 sales—the IPO ignited an AI stock frenzy. On its first trading day, shares surged about 100% to $367.
The AI boom has fueled a broader semiconductor rally: the Philadelphia Semiconductor Index climbed 66% year-to-date, with Intel up 218% and AMD more than doubling. However, this rotation has raised alarm among crypto investors, who fear speculative capital is migrating from digital assets to AI stocks. Bitcoin has fallen 7% in 2026 and remains stuck below $80,000, underscoring the shifting appetite.
