Publicly Traded Data Storage Companies
Comprehensive directory and performance metrics for Publicly Traded Data Storage Companies, ranging from colocation REITs to AI infrastructure enablers.
Navigating the landscape of Publicly Traded Data Storage Companies in 2026 requires a specialized focus on the physical and digital infrastructure powering the artificial intelligence boom. The sector is currently dominated by massive colocation giants and hyperscalers, alongside specialized Data Center REITs that provide the essential power and cooling for high-density GPU clusters. Investors often utilize the compare data storage metrics tool to benchmark net operating income against sector leaders. From hardware innovators like NetApp storage to global operators managing gigawatts of IT load, this directory tracks the firms anchoring the modern cloud economy. Analyzing the subsector weightings of technology ETFs can further highlight the institutional demand for these critical assets.
Key Takeaways
High-density power requirements for AI training have pushed data center REITs to record utilization, with lease rates climbing over 20% in major hubs.
AWS and Meta lead the industry in total IT capacity, together controlling nearly 4GW of U.S. IT load dedicated to cloud and generative AI workflows.
Dividend-paying REITs like Digital Realty and Equinix offer yields between 2.4% and 3.1%, supported by long-term colocation contracts and 15% FFO growth.
Legacy storage providers are pivoting to "AI-ready" flash and server solutions to remain competitive against hyperscale-integrated hardware architectures.
Top Publicly Traded Data Storage Companies by Market Cap (2026)
The following table tracks the market leaders in data center operations and storage hardware, ranked by their 2026 valuations and IT capacities.
| Rank | Ticker | Company | Type | Market Cap | Capacity (MW) | P/E Ratio | Div Yield |
|---|---|---|---|---|---|---|---|
| 1 | EQIX | Equinix, Inc. | REIT (Colo) | $77.0B | 995 MW | 82.4 | 2.4% |
| 2 | AMT | American Tower | REIT (Edge) | $82.0B | N/A | 28.5 | 3.9% |
| 3 | DLR | Digital Realty | REIT (Colo) | $60.0B | 686 MW | 34.1 | 2.8% |
| 4 | IRM | Iron Mountain | REIT (Hybrid) | $22.5B | 210 MW | 112.4 | 3.1% |
| 5 | NTAP | NetApp, Inc. | Storage Hardware | $18.4B | N/A | 16.5 | 2.1% |
| 6 | STX | Seagate Technology | Storage Hardware | $16.2B | N/A | 21.2 | 2.9% |
| 7 | WDC | Western Digital | Storage Hardware | $14.8B | N/A | N/A | 0.0% |
| 8 | PSTG | Pure Storage | Storage Hardware | $12.1B | N/A | 45.8 | 0.0% |
| 9 | GDS | GDS Holdings | International Colo | $3.2B | 540 MW | N/A | 0.0% |
| 10 | CLS | Celestica Inc. | AI Servers | $5.8B | N/A | 12.4 | 0.0% |
Publicly Traded Data Storage Companies — Complete Company List
List of Publicly Traded Companies Focusing on Data Storage Products Listed on Major U.S. Exchanges
Data Storage: Large-Cap Stocks
- NetApp, Inc. (NTAP) (Data storage software, systems and services)
- Seagate Technology (STX) (Electronic data storage technology; hard disk drives)
- Western Digital Corporation (WDC) (Data storage solutions: hard disk drives, solid-state drives, direct attached storage solutions, public and private cloud data center storage)
Data Storage: Mid-Cap Stocks
- InterXion Holding N.V. (INXN) (Netherlands: carrier and cloud neutral colocation data center services)
- Pure Storage Inc. (PSTG) (IPO in October 2015: Enterprise data flash storage company)
- Teradata Corporation (TDC) (Analytic data platforms, marketing and analytic applications, related services)
Data Storage: Small-Cap Stocks
- 21Vianet Group, Inc. (VNET) (China: carrier-neutral internet data center services provider)
Data Storage: Micro-Cap Stocks
- Qualstar Corporation (QBAK) (Products for the data storage and power conversion markets)
- Quantum Corporation (QTM) (Scale-out storage, archive and data protection solutions)
Risks & Considerations
High Capital Expenditure Intensity
Building AI-ready data centers requires multi-billion dollar upfront investments. Companies must manage high debt-to-EBITDA ratios to sustain their construction pipelines.
Energy and Power Grid Constraints
The massive power draw of AI servers has led to localized grid shortages. Lack of available power capacity can delay new site launches and cap revenue growth for operators.
Interest Rate Sensitivity in REITs
As capital-intensive real estate vehicles, data storage REITs are sensitive to rate hikes, which increase borrowing costs and impact funds from operations (FFO).
Technology Obsolescence Risk
Rapid shifts in GPU and server architecture can render older data center cooling or power configurations inefficient, requiring expensive retrofitting or write-downs.