A landlord layer that hasn't kept pace with its tenants

Data centers are the buildings that house the servers running artificial-intelligence workloads, and the companies that own and lease that real estate are structured as real estate investment trusts (REITs), which must pay out most of their taxable income as dividends. Over the past year, companies that make the memory chips, packaging and networking gear inside those buildings have rallied more than 100%, in some cases nearly 280%, on AI-driven demand. The eight REITs and REIT-like landlords that own the buildings themselves have moved a combined average of roughly flat to slightly negative over the same period. That gap raises an obvious question: are the landlords a lagging piece of the AI trade that simply hasn't caught up, or is data-center real estate structurally unable to capture AI economics the way chipmakers do? The answer splits the group in two.

The US pair is executing — and priced for it

Equinix (EQIX), the largest global operator of interconnected data centers where cloud providers and networks exchange traffic, rose 29.5% over the past year and reported its second-highest quarterly bookings on record plus a record backlog of signed-but-not-yet-installed capacity, prompting what the company called its largest single guidance raise in its history — 2026 funds-from-operations-per-share growth (AFFO, the REIT-industry profit measure that adjusts for real estate depreciation) now guided to 10-12%. Digital Realty (DLR), the largest wholesale data-center landlord serving hyperscale cloud tenants, is up 7.9% over the year and posted renewal spreads above 25% in cash terms and an all-time-high $1.9 billion leasing backlog, meaning existing customers are paying markedly more to renew — a reversal after a decade of pricing pressure. Verdict on the business: CONFIRMS acceleration. Verdict on valuation: STRETCHED. Equinix trades near 74-78x trailing GAAP earnings and roughly 25-30x forward AFFO, the highest multiple in the sector; Digital Realty sits around 51-52x trailing earnings and 22-25x forward AFFO. Both are executing, but further re-rating now depends on continued delivery rather than a valuation gap being closed.

NextDC, GDS and VNET look like the real dislocation

NextDC (NXT.AX), an Australian data-center and interconnection operator expanding into Malaysia, New Zealand and Singapore, fell 5.5% over the year even as contracted utilization jumped 60% quarter-over-quarter to 667 megawatts and its forward order book rose 83%; it is funding growth with a fresh A$2.2 billion capital raise, and its gross margin briefly collapsed to 0.4% last quarter, a reminder that scaling capacity ahead of revenue has near-term costs. GDS Holdings (GDS) and VNET Group (VNET), Chinese data-center operators serving domestic cloud and enterprise customers, fell 7.6% and 11.4% respectively despite GDS posting record quarterly bookings of roughly 200 megawatts and VNET guiding wholesale-segment earnings to grow 56% through 2026. Both trade at 0.2-0.5x sales versus roughly 11x for Equinix and Digital Realty — a discount the user's own research notes attribute mainly to US-listing audit-compliance risk and refinancing exposure rather than demand weakness. Verdict on the business: CONTRADICTS the flat tape — fundamentals are accelerating while prices fell. Verdict on valuation: this is the group's genuine possible dislocation, tempered by real geopolitical and funding risk.

Towers and paper storage are dragging, and diverging, not confirming

American Tower (AMT), the largest global wireless-tower landlord that also owns the CoreSite data-center business, fell 18.2% over the year even as its data-center segment grew 13.4% and management raised guidance for the second time — this is a tower-lease-churn recovery story wearing a data-center label. Crown Castle (CCI), a US tower REIT, fell 28.2% after an $8.5 billion sale of its fiber and small-cell businesses — an explicit retreat from the AI/edge-computing convergence this basket is meant to capture. Iron Mountain (IRM), a records-storage and document-management company expanding into data centers, rose 27.4% on 47% data-center segment growth but trades above 140x trailing earnings, a records-storage base carrying a growth-stock multiple. None of these three is primarily a data-center bet, and excluding them lifts the remaining five-name average from roughly flat to about +6.7% — still an order of magnitude below the 100%+ moves in chips, packaging and networking.

What's actually rationing capacity

Digital Realty's new developments are pre-leased at an 11.5% stabilized yield, comfortably above typical REIT cost of capital, so new supply remains profitable to build. The scarce input is no longer land or capital — it's power. US and European grid interconnection queues now average more than six years, and Sightline Climate estimates 30-50% of 2026's planned capacity could be delayed. Hyperscale cloud companies are increasingly funding their own power generation, a channel that bypasses landlords on that layer — but the largest AI-cloud renter, CoreWeave, still leases essentially all of its 49 data centers from third parties rather than self-building, meaning demand hasn't broadly left the REIT model yet.

On the tape, American Tower's trend flipped to mild bearish from strong bearish over the past month as DISH-related headwinds fade, Iron Mountain remains in a strong uptrend, and the broader eight-name group still carries a bullish trend label despite averaging near flat — a reminder that trend labels here reflect direction, not magnitude.

The setup

Where it stands — Equinix and Digital Realty are executing at record levels but priced near decade-high multiples; NextDC, GDS and VNET show accelerating fundamentals despite falling prices. Would confirm — Digital Realty's cash renewal spreads stay above 20% and NextDC's contracted utilization keeps rising in its next quarterly update. Would invalidate — Equinix's AFFO-per-share growth guidance is cut below 10% or GDS/VNET utilization rates decline sequentially. Watch next — Equinix and Digital Realty's Q3 2026 earnings, expected late October 2026, for continued bookings momentum. Valuation — Equinix trades near 25-30x forward AFFO and Digital Realty near 22-25x, both above their own decade averages for the sector.