US stocks: AI infra firm Accelevation valued at $3.9 billion as shares fall in Nasdaq debut Reuters Michael Rubiera, founder and CEO of Accelevation, attends his company’s IPO at the Nasdaq Market Site in New York City, U.S., September 30, 2026.

REUTERS/Brendan McDermid Synopsis Accelevation's shares began trading below the initial public offering price of $18, reflecting current market instability.

The company, which focuses on data center infrastructure, successfully raised $540 million by offering around 30 million shares at a debut price of $17.55.

Founded in 2017, Accelevation achieved impressive revenue growth, totaling $447.8 million by 2025 amidst an uncertain U.S.

IPO landscape that is impacting this listing season.

By Reuters Sep 30, 2026, 11:08:00 PM IST Follow us Shares of data center infrastructure firm Accelevation opened 2.5% below their initial public offering price on Wednesday, giving the company a valuation of $3.92 billion in its Nasdaq debut.ADVERTISEMENT The Miamisburg, Ohio-based company's shares opened at $17.55 apiece, compared with their offer price of $18.Accelevation provides power distribution, cooling, structural systems and installation services for data centers.

The company and selling shareholders raised $540 million in a US initial public offering on Tuesday, after they sold about 30 million shares, below the marketed range of $20 to $24 each.

The debut comes as the US IPO market enters the fall on uncertain footing, with heightened volatility and investor caution weighing on the typically busy listing season and prompting some companies to push back their flotation plans.The AI infrastructure sector has also faced setbacks, including the reported delay of SB Energy's expected IPO and a dispute involving Oracle and Blue Owl that could delay a data center project in New Mexico.Founded by Michael and Shawn Rubiera in 2017, Accelevation has grown rapidly, with revenue rising to $447.8 million in 2025 from less than $3 million in 2021.

It was acquired by private equity firm Olympus Partners from LFM Capital last year.