Modine Surges 29 Percent as Samsung Holds Takeover Talks Over the 5.6 Billion Dollar AI Cooling Supplier

Modine Manufacturing shares surged 29 percent on Friday to close at $136.38, the stock's best single-day gain since November 2020, after Bloomberg reported that Samsung Electronics is in talks to acquire the Wisconsin-based maker of data center cooling systems. The move lifted the company's market value to roughly $5.6 billion from a prior close of $106.10 — still about 67 percent below its 52-week high of $323.25. Samsung shares slipped about 1 percent in Seoul.

The report, attributed to people familiar with the matter, says the discussions could produce a deal within weeks, but no final decision has been made and the talks could still fall apart. No price or terms have been disclosed, and neither company has confirmed the discussions; both declined to comment when contacted by Barron's. Modine's only announcement on the day was an investor event already on the calendar.

Why Samsung wants Modine is straightforward: AI chips run hotter as they get denser, and cooling has become one of the tightest bottlenecks in data center construction. Modine's fiscal second quarter, ended September 30, showed the demand curve nearly vertical — Data Centers segment revenue jumped 95 percent year over year to $439.7 million, with a 132 percent increase in the Americas, while quarterly orders passed $1 billion for the first time, a fourth consecutive record quarter. CEO Neil Brinker said demand "far exceeds our capacity," and the company disclosed a $400 million-plus award for custom air handling units from a strategic hyperscaler customer running through 2027.

The cracks in the story explain why the stock was buyable. Total revenue of $994.4 million grew 35 percent, but adjusted EPS of $1.35 missed the $1.52 estimate, gross margin fell 160 basis points to 20.7 percent on material, component and tariff costs, and free cash flow ran negative at $140.6 million as Modine built inventory and added capacity. Data center gross margin sat at just 19.7 percent. Shares had fallen more than 60 percent since May, including a drop of roughly 21 to 24 percent after the November 3 earnings miss — a collapse that made the company both cheaper and more attractive to a strategic acquirer.

Samsung has been assembling a cooling business for two years. In May 2025 it agreed to buy Germany's FlaktGroup for about 1.5 billion euros, and it is spending 240 billion won on a FlaktGroup production line in Gwangju. Modine would add direct supply relationships with US hyperscalers — and a much bigger bet, likely among Samsung's largest outbound acquisitions since its $8 billion purchase of Harman in 2016. Modine, for its part, has spent the quarter racing to build capacity: a new 682,000-square-foot Texas facility began commercial production this week, with 13 chiller lines operating and a target of 20 by fiscal year-end, plus a third dedicated data center facility coming online in Calgary.

The timing is helped by Modine's own reshaping. On October 1 it completed the spin-off of its lower-margin Performance Technologies business into a Reverse Morris Trust merger with Gentherm, leaving behind a nearly pure cooling and HVAC company that plans to rename itself Modexus Solutions. A cleaner AI-infrastructure profile is exactly the kind of asset a strategic buyer values — but it also invites friction. As a foreign acquirer of a supplier to American AI infrastructure, Samsung would likely face CFIUS review, and analysts caution the current share price now assumes a deal is close to certain; if talks collapse, most of Friday's 29 percent premium evaporates.

Watch November 18, when Modine presents new long-term targets at its investor day in Chicago — until a signed merger agreement appears, those targets will matter more to the stock than the reported talks. The broader read: even as Wall Street frets about AI over-spending, the physical supply chain of the buildout — chillers, liquid cooling loops, air handlers — is consolidating fast, and the companies that missed the first wave of cooling IPOs are buying their way in.