Hubbell data center sales grew over 80%; nVent guided Q4 organic growth to 26% to 29%, down from 44%

Hubbell's▲+1.80% — Hubbell, up 1.80 percent today wiring devices and pin-and-sleeve connectors, the electrical content inside every data center, grew more than 80% organically in the third quarter of 2026↗, and the company is doubling capacity spending to about $50 million a quarter for 2027 ¹³. Four days later the closest comparable, nVent Electric▼−0.82% — nVent Electric, down 0.82 percent today, beat estimates, raised full-year guidance and still fell 8.8%, because it told the market what comes next: fourth-quarter organic growth of 26% to 29%, down from 44% in the quarter just reported↗ ²⁴.

That guide is the first hard number showing organic growth in AI data-center electrical content decelerating.

The whole complex sold off on good news

On October 30 nVent reported revenue of $1.51 billion against a $1.43 billion estimate, up 43.7%, with adjusted EPS of $1.52 against $1.40 expected, and raised its full-year adjusted EPS range to $5.36 to $5.39 from $5.00 to $5.10 ²⁴. The stock fell 8.81% anyway↗, while Eaton▲+0.38% — Eaton, up 0.38 percent today dropped 6.03%, Vertiv▼−0.85% — Vertiv, down 0.85 percent today 5.46% and Hubbell 3.60% on a day the S&P 500 lost 1.8% ².

When the market marks down every supplier of data center gear on a day of beats, it is pricing the next quarter, not the last one. Hubbell's own print three days earlier made the same point: shares fell 6% on October 27 even though the raised guidance midpoint of $20.50 landed almost exactly on the $20.51 consensus ¹.

What Hubbell actually said, and what was buried in it

Hubbell's third quarter, reported October 27, showed net sales up 25% to $1.873 billion, adjusted EPS of $5.91, up 14%, and an adjusted operating margin of 25.5% ¹. Electrical Solutions, the segment where the data center demand lands, grew 51% including acquisitions and 22% organically; data centers are now about 15% of that segment's sales↗ ¹³.

Behind the 80% data center headline, two details complicate the January print ¹. First, a meter component shortage moved about $15 million of third-quarter revenue into the fourth quarter, so part of any Q4 beat is a catch-up, not a new sale ¹. Second, Hubbell starts its 2027 price increases in November, so margin can be defended even if volume slows ¹³.

The counterpoint is strong

nVent's CEO Beth Wozniak told analysts in October that orders are "very strong" and that there is "no pause" in data center demand, and its backlog grew to $2.6 billion ⁴. Hubbell's CEO Gerben Bakker described demand exceeding its own expectations for the year ³.

The bull case holds that electrical content per megawatt keeps rising no matter which hyperscaler builds, and the capacity commitments ($200 million from Hubbell in 2027, a new 400,000 square foot nVent facility in Arizona announced the same week) suggest suppliers see multi-year demand ¹³⁴. But growth rates are the market's yardstick for these stocks, and nVent's own guidance put that yardstick at roughly half its Q3 level ¹³⁴.

What the January print must show

Hubbell reports its fourth quarter in late January 2027 ¹²⁴. The number to watch is Electrical Solutions organic growth, not the headline: strip out the $15 million catch-up and the acquisitions, and any print near nVent's 26% to 29% guide confirms the deceleration is industry-wide ¹²⁴. More than 80% growth rates are a launch number ¹²⁴. The forward multiple is set by what the next quarter does.