Cooling Becomes the New Compute Constraint
Power-hungry accelerators are pushing rack densities beyond what conventional air cooling can handle economically. Data centers must adopt direct-to-chip liquid loops, immersion systems, heat exchangers and more sophisticated thermal controls, creating a multiyear retrofit and new-build cycle. Thermal-management specialists, pumps, connectors and electrical-infrastructure vendors gain content per megawatt. Data-center landlords bear higher upfront costs and execution risk when older facilities cannot readily support liquid-cooled racks.
How this story could end...
The endings this story genuinely supports, written from the same evidence as the story updates. The value ranges are illustrative examples of how the affected companies as a group could re-rate — not forecasts, targets or advice.
Mapping out the endings…
How the two sides have traded
The bull and bear baskets for this story, equal-weighted and indexed so the two lines start together.
Each scenario's basket — 3 months
Both sides on one chart — 10 stocks on the bull side, 10 stocks on the bear side. Neither side is emphasised.
Each line tracks the 10 companies most exposed to this story, so a broad basket of loosely related names does not flatten it. The full list below is unchanged.
Jul 20, 2026 – Oct 19, 2026 · 69 sessions
Equal-weighted performance of the 10 most exposed stocks over the last 3 months.
No data for ALFA.ST, 6361.T, DOV, TEL, WTS, SPXC, AAON, ECL
Most affected stocks
Bull case
Jentech manufactures heat spreaders, vapor chambers and liquid-cooling components used to manage heat from AI accelerators and servers.
Asia Vital Components supplies fans, heat sinks and liquid-cooling assemblies directly into high-performance computing systems.
Lenovo's Neptune warm-water cooling technology differentiates its high-performance and AI servers for customers seeking lower cooling power consumption.
Supermicro markets rack-scale direct-liquid-cooling systems and can capture higher system content as customers deploy dense AI clusters.
Sunon supplies server thermal-management products and is extending its cooling expertise beyond fans into liquid-cooled computing applications.
LS ELECTRIC supplies switchgear, busways and power-distribution equipment that gain content as liquid-cooled AI halls support greater electrical density.
Jabil’s manufacturing scale and Mikros microchannel-cooling technology position it to supply cold plates, liquid-cooling assemblies and integrated hardware as AI servers shift away from air cooling.
GF Piping Systems provides corrosion-resistant pipes, valves, flow controls and sensors suitable for data-center cooling-water loops.
KSB supplies pumps and valves needed to circulate and regulate cooling water in larger and more complex data-center thermal systems.
Aalberts supplies integrated piping, valves, connectors and hydronic flow-control systems applicable to data-center cooling networks.
Bear case
VNET may need substantial capital investment to upgrade Chinese data-center capacity for high-density liquid-cooled AI deployments.
NEXTDC must fund more complex power, water and cooling infrastructure as customer rack densities rise, increasing construction cost and execution risk.
GDS faces substantial capital requirements to upgrade cooling and power infrastructure while operating in price-competitive markets.
Macquarie Technology Group's data-center operations may incur higher upfront power and thermal-infrastructure costs to accommodate increasingly dense AI workloads.
Iron Mountain's data-center portfolio faces higher development and retrofit spending where facilities must accommodate heavier liquid-cooled racks and upgraded heat rejection.
Keppel DC REIT could face elevated retrofit capital requirements and tenant-disruption risk if existing assets need extensive liquid-cooling upgrades.
Lennox has less direct exposure to specialized liquid-cooled data centers than thermal-management vendors focused on mission-critical infrastructure.
Digital Core REIT can face retrofit spending, tenant disruption and execution risk where portfolio facilities need plumbing and heat-rejection upgrades for liquid cooling.
Equinix must fund expensive cooling and power retrofits while maintaining uptime across a large installed base of older facilities.
Mapletree Industrial Trust's data-center assets may require higher landlord spending to support liquid distribution, floor loading and expanded heat-rejection capacity.
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