Power Solutions International (PSIX) - Sub-1 P/S and 6.7x P/E with Data Center Exposure

I was driving through Wisconsin this past weekend and passed by one of Power Solutions International's (PSIX) manufacturing facilities. Ended up looking up the company and the stock caught my eye.

# Business Overview

*Who they sell to:* They build engines for other companies, rather than everyday consumers.

*What they build:* They make versatile engines that can run on almost any type of fuel, including natural gas, diesel, and propane.

*The main benefit:* They handle all the strict pollution rules and environmental paperwork, which saves their buyers a lot of time and hassle.

*Where the engines are used:* Their products end up in backup power generators, heavy industrial machinery, and large commercial vehicles like buses.

# Top Customers

The company sells directly to Original Equipment Manufacturers (OEMs). Their historical client base includes heavy equipment and industrial manufacturers such as Kohler Co., Toyota Material Handling, HD Hyundai Infracore, JLG Industries, and Bandit Industries.

# Recent Struggles

The stock price declined in early 2026. The primary issue was margin compression. In Q4 2025, gross margin fell to 21.9%, compared to 29.9% in Q4 2024. In Q1 2026, gross margin was 22.9%, down from 29.7% in Q1 2025. Management attributed the margin contraction to a softer mix of oil and gas products and elevated production costs from capacity ramp-up activities at their Wisconsin facilities.

# Growth Opportunities

The core growth thesis centers on the power generation segment, specifically data centers. The company's facilities in Beloit and Darien, Wisconsin, specialize in custom power generation packages. The recent capital expenditures are targeted at building power infrastructure and enclosures to meet data center energy demands.

# Valuation Metrics

The current market pricing presents standard value-investing metrics:

* *P/E Ratio:* The trailing 12-month P/E ratio sits at 6.7x.
* *Price-to-Sales (P/S):* The stock trades at a P/S ratio of 0.89.

I think the market could be penalizing PSIX for the gross margin contraction tied to their Wisconsin expansion. If management can stabilize margins back toward the historical 30% range as production scales, the current sub-1.0 P/S and 6.7x P/E present a specific valuation case.

I am looking forward to discussion and counterarguments regarding their operational ramp-up and current valuation.