Generac Holdings Inc. (GNRC) Up 8.2% — Time to Strike?
Generac Holdings Inc. (GNRC) is making a decisive move higher on the NYSE, last changing hands at $191.30. That is a $14.52 gain over the prior close of $176.78 and one of the sharper single-session advances in the name this year. The rally puts the stock about 41.9% above its 52-week low of $134.80, though it still sits roughly 35.5% below its 52-week high of $296.44. That leaves substantial room for recovery if the company's growth story keeps building.
Volume stands at approximately 581,312 shares with the session still underway, compared to a 90-day average of roughly 1.19 million. Turnover is running at about half the typical daily level so far, so the full-day picture remains to be filled in.
Why Generac Holdings Inc. Price is Moving Higher
The rally reflects investors placing a higher value on Generac's AI data-center opportunity, and the numbers behind that story have grown considerably over the past two weeks. When Generac reported Q3 results on October 28, management said data-center revenue topped $100 million for the quarter. It raised its expected 2026 data-center revenue to nearly $500 million, up from approximately $450 million. Then on November 4, management said 2027 data-center revenue should well exceed $2 billion, a scale-up that would reshape the company's revenue mix. The market is now pricing that trajectory, and the enthusiasm extends across data-center power infrastructure. Vertiv Holdings Co (VRT) is up 9.92% today, moving in near lockstep with Generac.
Q3 results gave that outlook a solid foundation. Adjusted EPS came in at $2.54 against a $2.43 consensus, an $0.11 beat and a 38.8% increase from $1.83 a year earlier. Revenue of $1.29 billion fell slightly short of the roughly $1.31 billion to $1.32 billion analysts expected, but it still grew 16% from $1.11 billion in the prior-year quarter. Profitability grew faster than sales, with adjusted EBITDA up 33% year over year to $256 million. The segment breakdown shows where the momentum is concentrated. Commercial and industrial sales jumped 28% to $553 million, while residential sales rose 9% to $744 million.
Guidance supports the bull case as well. Alongside the 2027 data-center target, management raised its full-year adjusted EBITDA margin guidance to 20.5% to 21.0%, up from 20.0% to 21.0%. It also lifted expected 2026 free cash flow to about $450 million and held full-year sales-growth guidance in the mid-to-high teens. Investors are clearly rewarding the improving mix, expanding margins, and data-center visibility over the modest top-line miss. That shift in focus is the same one fueling gains in other Industrials names today, with TransDigm Group Incorporated (TDG, C) up 3.10%.
What is the Generac Holdings Inc. Rating - Should I Buy?
Weiss Ratings assigns GNRC a C rating. The rating was upgraded on 8/5/2026. Current recommendation is Hold. The upgrade came before the October earnings beat and the expanded data-center targets. The underlying business has since given investors more reasons to take notice, and the rating now sits at a level where further operating progress could carry it higher.
The Excellent rating on the Solvency Index anchors the profile. Generac has the balance-sheet strength to fund a rapid ramp in data-center production without straining its finances, and guidance for roughly $450 million in 2026 free cash flow reinforces that flexibility. The Good rating on the Growth Index reflects 16.19% revenue growth, along with a sequential climb from $1.17 billion in the June quarter to $1.29 billion in the September quarter, a 10.3% gain in three months. For a company whose largest end market is residential backup power, accelerating at that pace shows the commercial and industrial business is now pulling real weight.
The Good rating on the Efficiency Index tells a similar story with one caveat. A 10.64% return on equity and a 6.52% profit margin are respectable, but they lag the 33% surge in adjusted EBITDA and the raised margin guidance. That gap suggests efficiency could improve as higher-margin data-center volume flows through. Where the picture becomes more nuanced is in the market-facing indices. The Fair rating on the Total Return Index reflects a stock still about 35% below its $296.44 high despite today's rally. The Weak rating on the Volatility Index captures how sharply shares have swung between $134.80 and that peak. Today's 8.21% jump on data-center enthusiasm is another example of that volatility, and with the stock trading at 37.49 times earnings, sentiment around the AI power buildout can move it quickly in either direction.
Within the Industrials sector, Generac sits alongside TransDigm Group Incorporated (TDG, C) and AB Volvo (publ) (VOLVF, C). It trails Vertiv Holdings Co (VRT, C+), Deere & Company (DE, C+), and Northrop Grumman Corporation (NOC, C+). Given how closely Generac's data-center ambitions now track Vertiv's market, execution on the 2027 target could narrow that gap.
About Generac Holdings Inc.
Generac Holdings Inc. (GNRC) is an Industrials company based in Waukesha, Wisconsin. It designs and manufactures power generation equipment, energy storage systems, and related technology for residential, light commercial, and industrial customers. Founded in 1959, the company built its reputation on home standby generators, which switch on automatically during utility outages. It remains the dominant name in that category in the United States. Its residential lineup also includes portable generators, the PWRcell battery storage system, solar-integrated energy products, and ecobee smart thermostats, which extend the company's reach into home energy management.
On the commercial and industrial side, Generac supplies larger stationary generators, mobile power units, light towers, and gas and diesel generator sets. These serve telecommunications, healthcare, manufacturing, and, increasingly, data centers. The rising power demands of AI computing have turned backup generation into a critical part of data-center construction, and Generac has expanded its capacity to compete for these large-scale projects. Its Mobile Link remote monitoring platform connects installed generators to dealers and owners, supporting service revenue and long-term customer relationships.
Generac's competitive advantages come from its extensive dealer and installer network, its brand recognition in residential backup power, and its manufacturing scale across engine-driven generation products. That residential base provides a durable foundation as the company pushes deeper into commercial, industrial, and data-center markets, where order sizes and growth rates are considerably larger.
Investor Outlook
Generac Holdings Inc. (GNRC) carries a Weiss Rating of C (Hold), and a growing data-center business plus raised margin guidance give investors a strong growth narrative to follow. The key checkpoints are whether quarterly data-center revenue keeps scaling toward the 2027 goal of well over $2 billion, and whether full-year results deliver the targeted 20.5% to 21.0% adjusted EBITDA margin and roughly $450 million in free cash flow. See full rankings of all C-rated Industrials stocks inside the Weiss Stock Screener.
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