Data-Centre Construction Stocks Lose $4.2tn as AI Trade Unravels

• Dispatched: Nov 15, 2026 · 05:12 ET (10:12 UTC)

One-sentence summary: A Financial Times analysis finds that manufacturing, utility and mining companies tied to data-centre construction have shed about $4.2 trillion in market value since June — nearly half of the $9.4 trillion they gained over the previous 12 months — even as US data-centre construction spending reached $96 billion and leading order backlogs remain intact, pointing to a repricing of valuations and financing models rather than a collapse in demand itself.

Verification status: ✓ Original Financial Times analysis (based on FactSet market-value data and US government construction-spending statistics), corroborated the same day by multiple financial outlets.

Core Facts & Consensus Delta:

The Financial Times published the analysis on 2026-11-15 00:11 ET / 05:11 UTC. Since June, data-centre construction-linked stocks have lost about $4.2 trillion in market value, against roughly $9.4 trillion gained over the prior 12 months — so the retreat erases nearly half of the earlier advance. At company level, Caterpillar has lost $214 billion in market capitalisation, down 44 per cent since its record high on June 30; nuclear power company Oklo has fallen 49 per cent despite signing a power contract with Meta in January; Comfort Systems and fibre-optics maker Corning have each lost about half their value. Industrials are now the second-worst performing sector in the S&P 500 since the summer, behind technology.

The counter-evidence is equally concrete: US spending on data-centre construction, excluding IT equipment and chips, reached $96 billion in the 12 months to September, according to the latest government data. Caterpillar reports a record $78 billion backlog with power-generation sales up 75 per cent year on year; Siemens says data-centre orders for electrical equipment rose 60 per cent in 2026 to €7 billion; Eaton reports orders doubled from a year earlier.

Supply-Chain & Market Read-Through: The sell-off is driven less by chip demand itself than by doubts over the sustainability of debt-funded capital spending: hyperscalers and neoclouds are building data centres with heavy leverage, and concern in credit markets is now spilling into equities. Deutsche Bank senior US economist Brett Ryan said institutional money had piled into the trade too aggressively, pushing valuations to overly enthusiastic levels. Local opposition and regulatory uncertainty form a second transmission channel: resistance to new data centres is rising across the United States, making project approvals and construction timetables less certain. Citi researchers say tighter regulation after this month's midterm elections could increase volatility for the industry, although a nationwide construction ban remains unlikely.

The indirect read-through for memory and chips runs through expectations: slower data-centre construction would feed into enterprise solid-state drive and HBM demand expectations, optical-module and liquid-cooling order pacing, and neocloud capital spending. But backlogs remain strong — Dell'Oro Group notes demand still far exceeds supply, and data centres already under construction still need to be completed, limiting the near-term hit to equipment and power orders. One caution: backlogs are a trailing indicator and may reflect double or triple ordering by buyers trying to secure scarce capacity, so they cannot be read directly as future revenue.

Next Catalysts & Watchpoints:

• Nvidia's fiscal Q3 earnings after the US close on 2026-11-17, with the call at 17:00 ET / 22:00 UTC: data-centre revenue and capital-spending commentary will test whether compute demand is cooling in step with the sell-off.
• Hyperscaler fourth-quarter capital-spending execution and 2027 guidance, plus the progress of data-centre permitting and power-grid connection approvals across US states.

Sources:

• Financial Times (full text via TradersUnion) (Published: 2026-11-15 00:41 ET / 05:41 UTC)
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Information only, not investment advice.