Cerebras Systems Secures $5.55 Billion in 2026’s Largest IPO

Cerebras Systems raised $5.55 billion in its IPO, the largest of 2026.

Chipmaker Cerebras Systems has raised $5.55 billion in its initial public offering, marking the largest IPO of 2026 amid increasing demand for semiconductors, reports Bloomberg.

The firm set the share price at $185, surpassing the initially stated range of $150–160. Initially, Cerebras planned to sell 30 million shares. The market capitalization reached approximately $49 billion.

The company has developed a processor nearly the size of an entire silicon wafer. This allows for 900,000 AI cores and 44 GB of high-bandwidth SRAM memory to be housed on a single device.

This reduces latency and accelerates inference—particularly for LLM, where data transfer between memory and compute units often becomes a bottleneck. In certain scenarios, the company claims a tenfold or greater speed increase compared to GPU systems.

Among Cerebras’ key partners:

• OpenAI has signed an agreement to build 750 MW of capacity on the company’s chips and plans to invest up to $20 billion over three years;
• Amazon has announced its intention to use the firm’s semiconductors alongside Trainium for AI operations.

Cerebras sought to manage the growing interest in the upcoming listing. The company asked institutional investors to specify the number of shares and the maximum price they were willing to pay to assess the actual level of demand.

During the IPO, applications exceeded the available shares by more than 20 times. Meanwhile, Arm Holdings and its majority owner SoftBank Group attempted to acquire Cerebras weeks before the anticipated initial public offering.

In June, SpaceX filed for an IPO, aiming to raise between $50 billion and $75 billion with a valuation of $1.75 trillion.