Thesis. The physical survival kit of the AI datacentre — the only vendor selling integrated power and liquid cooling — with 22.6% adjusted operating margins and free cash flow up 234%. But it stopped reporting backlog in Q2, leaving deferred revenue (doubled to $3.63B) as the only forward signal.
Reviewed 19 Sep 2026, after Q2 2026 results on 29 Jul. Next review after Q3 2026 earnings on 28 Oct 2026.
What it does
Vertiv sells critical power — UPS, switchgear, and next-generation 800 VDC systems developed with NVIDIA — alongside thermal management that is shifting from precision air conditioning to liquid cooling: direct-to-chip plates and coolant distribution units. Plus prefabricated modular datacentres and lifecycle services. It sits between the grid and the chips.
Liquid cooling is a physics requirement, not a preference. Above roughly 40kW per rack, air cannot carry the heat away fast enough, and AI racks are well past that. So the transition is not a product cycle Vertiv has to win — it is a constraint the industry has to satisfy, and Vertiv holds about 23% of precision cooling.
The most important thing on this page is a disclosure change. The Q2 2026 release contains no backlog figure and no orders number at all. The Q2 2025 release led with backlog — $8.5B at ~1.2x book-to-bill — and entering 2026 the company pointed at ~$15B, after Q4 2025 organic orders rose ~252% YoY.
Companies headline backlog when it is growing and go quiet when it is not. The counter is that backlog is management-defined while deferred revenue is audited — and deferred revenue went from $1.815B at 31 December to $3.634B at 30 June. Customer cash paid for undelivered equipment doubled in six months.
Bull case
- Q2 2026 net sales $3,274M, +24% YoY (18% organic, 5% acquisitions, 1% FX). Operating profit $638M (+44%); adjusted operating profit $738M (+51%)
- Adjusted operating margin 22.6%, +410bps on productivity and favourable price-cost — and that is inclusive of tariff impacts
- Diluted EPS $1.27 (+53%); adjusted diluted EPS $1.52 (+60%)
- Operating cash flow $1,100M (+241%); adjusted free cash flow $925M (+234%). Liquidity $5.6B
- FY26 guidance raised across every metric: net sales $13.8–14.2B (30–32% organic), adjusted operating profit $3.285–3.365B, adjusted diluted EPS $6.65–6.75 (+58–61%)
- Deferred revenue doubled to $3.634B in six months — audited, and the best available forward proxy
- Integrated power plus thermal is the structural advantage. Hyperscalers increasingly want one vendor for the whole electrical-and-cooling stack, and no direct competitor does both
- NVIDIA 800 VDC collaboration engineering-ready with product in H2 2026 — a design-in seat at the dominant chipmaker
- Inaugural investment-grade ratings (Moody's Baa3, S&P BBB−) in February; joined the S&P 500 in March
Bear case
- Backlog and orders are no longer disclosed — the cleanest forward indicator in the category is simply gone. A second quarter of silence would be a genuine concern
- Growth is decelerating. Q2 2025 was +35%; Q2 2026 is +24%, and only 18% organic
- The risk has shifted from order intake to conversion. Management cited "temporary supply chain congestion and multi-phased project execution" causing timing shifts, while pushing capex toward ~4% of revenue
- Analyst targets cut across the board with ratings intact: RBC $418→$337, Citi $414→$358, Evercore ISI $425→$375, Goldman $352→$301; consensus ~$338 across 28 analysts. The Street trimmed multiple and timing, not the thesis
- ETN bought Boyd Thermal for $9.55B in March specifically to attack this market, and Schneider is in a dead heat on overall share. The giants are aiming directly at liquid cooling
- EMEA ~−8% and APAC ~−10% — growth is Americas and AI-concentrated
- A plaintiffs' firm announced an investigation on 12 August. Routine after a sharp post-earnings decline, not evidence of wrongdoing
- Still priced richly after a large re-rate
Major customers
- Hyperscalers — Microsoft, Amazon, GOOG and META, buying power distribution, busway, UPS and liquid cooling
- Colocation providers — Equinix, Digital Realty and the wholesale datacentre operators
- NVDA — partnership on reference rack designs and the 800 VDC architecture. Vertiv's liquid cooling is specified into NVIDIA's high-density racks, making NVIDIA a channel as well as a design partner
- Neoclouds — CRWV, IREN and other GPU cloud builders fitting out capacity
- Enterprise and telecom — the legacy, slower-growth base
⚠️ Customer percentages are not disclosed; concentration among hyperscalers and colocation operators is significant.
Read-through. NVIDIA's rack roadmaps are the key upstream signal — as rack power density rises, air cooling stops working and liquid cooling becomes mandatory, and that transition is Vertiv's growth curve. Hyperscaler capex guidance is the demand input, but Vertiv's revenue lags it, because power and cooling are installed during the build rather than at the end — which is why STRL's site progress is an earlier read than Vertiv's own orders. The neoclouds are a newer customer class whose capacity announcements convert into thermal and power orders. The cross-category tension is the thing to hold onto: ETN bought Boyd Thermal specifically to attack this market, so if Eaton starts winning integrated power-and-cooling deals that is simultaneously bullish Grid Equipment and bearish Datacenter Thermal. It also competes with Schneider, NVT, Munters and SMCI on cooling.
What would change the view
- Q3 revenue landing inside guidance — the direct test of the execution-timing concern
- Deferred revenue in the Q3 10-Q — now the best available proxy for forward demand, replacing book-to-bill
- Any resumption of backlog disclosure. A second quarter of silence would be a genuine concern
- EMEA returning to organic growth
- Liquid-cooling wins against Eaton/Boyd and Schneider
- 800 VDC productisation landing in H2 2026
Update log
19 Sep 2026 — Converted to the standard template. Current through Q2; no new disclosures since. The backlog disclosure change moved into "what it does," since it changes how every other number on the page should be read.
16 Aug 2026 — Page rewritten post-Q2, with the disclosure change identified as more significant than the beat.
12 Aug 2026 — A plaintiffs' firm announced an investigation following the post-earnings decline.
29 Jul 2026 — Q2 2026 reported. Net sales $3,274M (+24%, 18% organic); adjusted operating profit $738M (+51%) at a 22.6% margin (+410bps); adjusted diluted EPS $1.52 (+60%); adjusted FCF $925M (+234%). FY26 guidance raised to $13.8–14.2B net sales and $6.65–6.75 adjusted EPS. No backlog or orders figure disclosed. Deferred revenue $3.634B at 30 June, from $1.815B at 31 December.
Mar 2026 — Joined the S&P 500. Feb 2026 — Inaugural investment-grade ratings.
Probabilities: strengthen ~55% / weaken ~35%.
Research and education only — not investment advice.
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