10 Cheapest AI Data Center Stocks to Buy According to Billionaires

8. Comfort Systems USA, Inc. (NYSE:FIX)

Number of Billionaire Investors: 25

Forward P/E: 18.29×

Comfort Systems USA, Inc. (NYSE:FIX)’s growth comes with unusually strong cash generation. It reported third-quarter revenue growth of 53.7%, bringing sales to $3.77 billion from $2.45 billion a year earlier. Net income increased to $489.0 million from $291.6 million, and diluted EPS reached $13.91, versus $8.25. Operating cash flow rose to $1.01 billion from $553.3 million.

The mechanical and electrical contractor connects directly to the infrastructure buildout. In its third-quarter filing, Comfort said demand had strengthened, particularly in technology and data centers. That gives investors relevant exposure. 7 Best Data Center Engineering and Construction Stocks To Buy offers comparisons across the construction chain.

Backlog reached $17.81 billion at September 30, compared with $14.06 billion three months earlier. The increase supports future activity, although project cancellations, labor shortages and incorrect cost estimates can keep backlog from delivering expected profits.

The electrical segment grew 84.8% to $1.18 billion, while mechanical revenue increased 42.7% to $2.58 billion. Technology-sector activity helped drive growth in both businesses, and Comfort identified data centers as a particularly strong source of demand.

7. Hewlett Packard Enterprise Company (NYSE:HPE)

Number of Billionaire Investors: 29

Forward P/E: 12.03×

Hewlett Packard Enterprise Company (NYSE:HPE) is combining servers, networking and cooling into larger AI infrastructure orders. It recently announced a $1.2 billion Vultr order for AMD Helios AI rack systems at U.S. data centers. The systems combine computing hardware with HPE Networking switches and software. The order gives HPE a commercial commitment.

HPE’s latest quarterly results showed revenue growth of 33.7% year over year to $12.2 billion for the quarter that ended July 31. Stronger server and networking demand drove the expansion: server revenue rose 35.3% to $6.8 billion, while networking revenue increased 74.9% to $2.9 billion. GAAP EPS climbed to $1.06 from $0.21, and free cash flow increased to $1.0 billion from $0.8 billion.

Within networking, Data Center Networking revenue increased 112.2% to $382 million. That business gives HPE another source of sales alongside servers as customers connect larger computing clusters. The Vultr order illustrates its effort to sell those technologies together, although project timing and integration demands can affect deliveries. 11 Most Undervalued Tech Stocks to Buy Right Now provides a wider technology comparison.

6. Oracle Corporation (NYSE:ORCL)

Number of Billionaire Investors: 31

Forward P/E: 16.11×

Oracle Corporation (NYSE:ORCL)’s AI cloud expansion creates a large revenue opportunity and a substantial funding requirement. Its fiscal first-quarter results showed revenue of $19.3 billion, up approximately 30%. Cloud infrastructure revenue increased 121% to $7.4 billion. GAAP EPS rose 55% to $1.56.

The same release reported negative free cash flow of $5 billion and a $20 billion common-stock sale during the quarter. Those figures make financing and shareholder dilution central to the investment case. Remaining performance obligations reached $664 billion.

On October 27, Oracle and NVIDIA announced plans to expand Vera Rubin infrastructure to multi-gigawatt scale and confirmed general availability of relevant systems on Oracle Cloud Infrastructure. The announcement pairs an existing service offering with a larger future expansion plan.

Total cloud revenue rose 62% to $11.6 billion, including $4.2 billion of cloud application revenue, up 10%. Faster growth in infrastructure shows where Oracle’s demand is rising most quickly. Supplying that computing capacity requires data centers, hardware and financing, so delivery schedules and capital costs sit at the center of the business. 10 Best Cloud Computing Stocks to Buy According to Hedge Funds examines other cloud providers.

5. Western Digital Corporation (NASDAQ:WDC)

Number of Billionaire Investors: 31

Forward P/E: 15.07×

Western Digital Corporation (NASDAQ:WDC) supplies hard disk drives and storage platforms, which gives investors exposure to the data that cloud and AI workloads create. Its fiscal first-quarter revenue of $4.38 billion, up approximately 55% year over year. Non-GAAP gross margin reached 58.1%, and non-GAAP EPS increased 161% to $4.64. Free cash flow totaled $1.38 billion.

Management also forecast second-quarter revenue growth of 66% to 72%. That guidance supports continued demand, but investors still need to judge how much of the earnings strength can last through the storage cycle.12 Best Data Storage Stocks to Buy Right Now compares the broader opportunity.

Cloud revenue reached $3.87 billion in fiscal first-quarter 2027, up 54% from $2.51 billion a year earlier, and made up 88% of Western Digital’s sales. Expanding cloud environments and AI storage needs drove demand for higher-capacity drives. Shipments of cloud exabytes increased more than 20%, while average selling prices per exabyte rose approximately 25%, so both higher volumes and stronger pricing supported growth. The cloud category includes AI and other cloud workloads. Its large contribution gives Western Digital substantial data center exposure, while a reversal in storage pricing could pressure profitability.