PSIX - Power Solutions International,

Power Solutions International designs and manufactures industrial gasoline, diesel, and alternative-fuel engines and power systems sold under the PSI brand, primarily for OEM customers integrating them into forklifts, aerial work platforms, generators, and off-road equipment. The business model is B2B OEM supply with long-term customer relationships, where engines are designed into a customer's product and replaced on a recurring basis. Revenue is approximately $200–250M annually, concentrated in North America, with meaningful exposure to industrial and material-handling equipment markets.

Past Year Trends

• Power Solutions International reported record FY2025 net sales of $722.4 million, a 52% increase year-over-year from $476 million in FY2024, driven by a surge in data center power systems demand where data-center customers represented approximately 79% of Q2 2025 sales. (Bullish)
• Q3 2025 net sales reached a record $203.8 million, up 62% year-over-year, but gross margin contracted approximately 500 basis points due to manufacturing ramp-up inefficiencies at the Wisconsin facility, reflecting the cost of scaling production rapidly to meet data center orders. (Bearish)
• Q1 2026 net sales declined 5% year-over-year to $128.6 million, with net income falling 62% to $7.3 million, as oil and gas market softness combined with uneven shipment timing for data center-related products interrupted the prior growth trajectory. (Bearish)

Next Year Trends

• Management guided Q2 2026 revenue to be roughly flat with Q1 2026's $128.6 million, with a second-half 2026 recovery contingent on the timing of shipments under several multi-year data center sales agreements currently being finalized — making PSIX's near-term results highly sensitive to hyperscaler order pull-forward or push-out decisions. (Neutral)
• The August 2025 partnership with HD Hyundai Infracore to market and distribute Tier 4 and Euro Stage V diesel engines and develop a multi-fuel common-block platform (supporting diesel, LPG, natural gas, and gasoline) is expected to begin generating incremental North American revenues, diversifying PSIX away from its near-total dependence on natural gas data center engines. (Bullish)
• Gross margin recovery toward management's stated 25% long-term target from the current 22.9% Q1 2026 level depends on resolving manufacturing inefficiencies at the Wisconsin production facility; failure to close this gap will compress EPS even if revenue recovers in the second half of 2026. (Bearish)

Red Flags

[Securities Fraud / Investigation] The SEC opened a formal order of investigation into Power Solutions International's accounting practices and financial reporting accuracy. — U.S. Securities and Exchange Commission, 2016–2017

[Securities Fraud / Investigation] Securities fraud class action lawsuits were filed against PSIX and its executives alleging material misstatements and omissions in the company's publicly reported financial results. — U.S. Federal Court (multiple plaintiffs), 2016

[Financial Restatement / Auditor Issue] PSIX announced it would restate financial statements for fiscal years 2014 and 2015 after identifying accounting errors that materially misstated previously reported results. — PSIX SEC filings (Form 8-K / restatement disclosures), 2016

[Exchange Delisting Warning] NASDAQ issued delisting notices to PSIX for failure to timely file required periodic financial reports with the SEC, placing the company's listing status at risk. — NASDAQ, 2016–2017