Three under-the-radar growth stocks that are powering the AI supercycle

The artificial intelligence supercycle has transitioned from a speculative phase led by chipmakers to an industrial execution phase governed by physical constraints.

As the market digests the massive capital expenditures (capex) required to monetize large language models (LLMs), global demand for foundational infrastructure continues to outpace supply.

Industry forecasts now project the global AI infrastructure sector will compound at an annual rate of nearly 25% through the end of this decade.

That said, investors are now increasingly pivoting toward the “operational layer,” the specialized systems required to house, cool, and power high-density compute clusters.

To that end, Vertiv, DigitalOcean, and Hut 8 represent three primary bottlenecks of this buildout: thermal management, scalable inference access, and electrical baseload.

Vertiv (NYSE: VRT): thermal management economics

High-density GPU clusters generate unprecedented thermal loads, rendering traditional HVAC systems obsolete.

Vertiv has captured a dominant market share by supplying a direct-to-chip liquid cooling architecture that delivers nearly double the thermal efficiency of legacy air-cooling while consuming 50% less power.

This operational necessity aligns Vertiv stock with a sub-sector projected to grow at a whopping 18% annualized rate through 2035.

Validating its market position, VRT recently recorded 30% year-over-year increase in revenue –  supported by a multibillion-dollar backlog.

Crucially, unlike many speculative infrastructure peers, Vertiv is already profitable and commands significant pricing power within a severely supply-constrained data center environment.

DigitalOcean (NYSE: DOCN): the scalable inference cloud

While hyperscalers focus on massive model training, DigitalOcean offers an accessible “inference cloud built for scale” aimed at mid-sized enterprises.

The company generated $900 million in revenue last year – up 15% year-over-year – but the more meaningful shift is in its customer composition.

Sales from clients spending over half a million annually surged 76%, while the $1 million+ customers tranche more than doubled in 2025.

By optimizing for machine learning inference, a more power-efficient phase than initial training, DigitalOcean stock is seeing non-GAAP earnings expansion outpace top-line growth.

This move upmarket suggests a strengthening “competitive moat” as AI workloads migrate from experimental stages to broad commercial production.

Hut 8 (NASDAQ: HUT): monetizing megawatts

The ultimate constraint on AI buildout has shifted from silicon supply to the electrical grid – and that’s what Hut 8 has set out to fix with its radical pivot from crypto mining to vertically integrated power and data center operator.

As of late 2025, the Nasdaq-listed firm managed a 1,000-megawatt production portfolio, with 300 megawatts under construction and a 1,200-megawatt developmental pipeline.

This energy-centric model allows Hut 8 stock to bypass utility grid delays currently stalling large-scale AI projects.

Financial momentum is accelerating as well, with 2025 sales hitting $235 million – a 45% year-on-year increase.

Although Hut 8 remains the highest-risk play due to continued unprofitability, its “power-first” strategy addresses the industry’s most acute long-term bottleneck.