Where Do Returns on AI Capex Accrue — Cloud Operators, Server OEMs, or Component Suppliers?
Data as of: Q4 2025 / Q2 FY2026 (latest reported quarters)
The AI infrastructure buildout has triggered one of the largest capital spending cycles in technology history. But investors in the "AI picks and shovels" trade face a critical question: which layer of the stack actually captures durable economic returns? We compare Oracle (ORCL) as the cloud operator, Dell (DELL) and Super Micro (SMCI) as server OEMs, and Vertiv (VRT) as the power and cooling infrastructure supplier to trace where capex dollars ultimately create shareholder value.
The Capex Intensity Gap Is Staggering
| Company | Layer | Latest Q Revenue | Capex | Capex % of Revenue |
|---|---|---|---|---|
| ORCL | Cloud Operator | $16.1B (Q2 FY26) | $12.0B | 74.9% |
| DELL | Server OEM | $33.4B (Q4 FY26) | $0.7B | 2.2% |
| SMCI | Server Assembler | $12.7B (Q2 FY26) | $21M | 0.2% |
| VRT | Power/Cooling | $2.9B (Q4 2025) | $93M | 3.2% |
Oracle is pouring nearly 75 cents of every revenue dollar back into data center infrastructure — up from just 8% two years ago. Its quarterly capex surged from $1.1B in Q2 FY2024 to $12.0B in Q2 FY2026, an 11x increase in eight quarters. Meanwhile, the equipment and component companies selling into this wave — Dell, SMCI, and Vertiv — spend 0.2–3.2% of revenue on capex. They are the beneficiaries, not the spenders.
Margin Profile: Who Keeps What
| Company | Gross Margin (TTM) | EBITDA Margin (TTM) | Net Margin (TTM) | FCF Margin (TTM) |
|---|---|---|---|---|
| VRT | 34.8% | 21.1% | 13.0% | 18.8% |
| ORCL | 68.5% | 44.2% | 25.3% | -21.6% |
| DELL | 20.0% | 7.0% | 5.2% | 7.5% |
| SMCI | 8.0% | 4.3% | 3.1% | 1.6% |
Oracle posts the highest gross margin at 68.5%, but its massive capex program has driven FCF margin deeply negative at -21.6%. Oracle's FY2025 free cash flow was negative $394M — a stark reversal from +$11.8B the year prior. The cloud operator is betting that today's capital outlays will generate recurring cloud revenue for years, but in the near term, it is destroying free cash flow to build capacity.
Vertiv stands out with the most balanced profile: 34.8% gross margins, 21.1% EBITDA margins, and — crucially — 18.8% FCF margins. It captures the margin premium of a critical infrastructure provider without bearing the capital burden of operating the facilities it equips.
Dell and SMCI operate as high-volume, low-margin pass-throughs. Dell's 20% gross margin reflects its broader enterprise mix, while SMCI's 8% gross margin reveals the razor-thin economics of AI server assembly.
Return on Capital: The Decisive Metric
| Company | ROIC (TTM) | ROE (TTM) | Revenue Growth (TTM) | EV/EBITDA |
|---|---|---|---|---|
| DELL | 28.1% | NM* | 19.0% | 14.9x |
| VRT | 25.3% | 33.8% | 27.7% | 48.3x |
| ORCL | 12.0% | 51.5% | 11.1% | 21.3x |
| SMCI | 8.7% | 12.5% | 34.8% | 16.6x |
Dell's ROE is not meaningful due to negative book equity.
Dell leads on ROIC at 28.1%, benefiting from an asset-light model relative to its revenue scale. Vertiv follows at 25.3%, generating strong returns on a growing but still modest asset base. Oracle's 12.0% ROIC reflects the dilutive near-term impact of its infrastructure buildout — PP&E has tripled from $19.1B to $67.9B in just two years. SMCI's 8.7% ROIC confirms that the server assembly business generates the thinnest economic returns in the chain.
Revenue Growth: Riding the Wave Differently
All four companies are benefiting from the AI infrastructure cycle, but through different mechanisms:
- SMCI leads on TTM revenue growth at 34.8%, driven by explosive AI server demand. Its FY2025 revenue reached $22.0B, up from $7.1B just two years earlier — a 3x expansion. But gross margins compressed from 18% to 8% as competition intensified.
- VRT grew 27.7% TTM with FY2025 revenue of $10.2B. Unlike the server OEMs, Vertiv's growth came with margin expansion — EBITDA nearly doubled from $1.2B to $2.2B.
- DELL grew 19.0% TTM to $113.5B in FY2026, driven by AI server orders within its Infrastructure Solutions Group.
- ORCL grew 11.1% TTM but is building the revenue base that justifies its capex: cloud infrastructure revenue is growing faster than the consolidated figure suggests.
Free Cash Flow: Following the Money
| Company | FY2024 FCF | FY2025 FCF | YoY Change | FCF per $1 Revenue |
|---|---|---|---|---|
| VRT | $1.14B | $1.89B | +66% | $0.19 |
| DELL | $1.87B | $8.55B | +358% | $0.08 |
| SMCI | -$2.61B | $1.53B | NM | $0.07 |
| ORCL | $11.81B | -$0.39B | NM | -$0.01 |
Note: ORCL FY ends May, DELL FY ends January, SMCI FY ends June, VRT FY ends December.
Vertiv generates 19 cents of free cash flow for every dollar of revenue — the highest conversion in the group. Dell's FCF surged in FY2026 as working capital normalized after an AI server inventory build cycle. Oracle's FCF turned negative as capex overwhelmed its $20.8B of operating cash flow.
Key Takeaways
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The cloud operator bears the capital burden. Oracle is spending $35B+ annually on infrastructure, with quarterly capex still accelerating. Returns depend on multi-year cloud contract monetization — a bet on duration, not current earnings.
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Server OEMs are volume pass-throughs. Dell and SMCI capture revenue growth but not margin expansion. SMCI's 8% gross margin at $22B of revenue generates less gross profit ($2.4B) than Vertiv does at less than half the revenue ($3.5B).
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Infrastructure suppliers capture the best risk-adjusted returns. Vertiv combines 25%+ ROIC, expanding margins, 19% FCF conversion, and minimal capex requirements. It sells into the capex cycle without participating in the capital intensity.
Investment Implications
Best positioned: VRT. Vertiv occupies the most attractive position in the AI capex value chain — asset-light, high-margin, and indispensable. Every dollar of cloud capex requires power and cooling infrastructure, making VRT a leveraged play on the buildout with superior unit economics. The 48x EV/EBITDA valuation reflects this, but 28% revenue growth and margin expansion provide support.
Attractive at the right price: DELL. At 14.9x EV/EBITDA with 28% ROIC, Dell offers the most reasonable valuation in the group. The risk is margin compression if AI server competition intensifies.
Highest risk/reward: ORCL. Oracle's massive capex gamble will either create a durable cloud franchise or saddle the company with underutilized assets. Investors are paying 21x EV/EBITDA for a company currently generating negative free cash flow.
Weakest economics: SMCI. The thinnest margins, lowest ROIC, and ongoing governance concerns make SMCI the least attractive way to play AI infrastructure despite its impressive revenue growth.
What to Watch
Oracle's Q3 FY2026 results (expected March 2026) will reveal whether capex is plateauing or still accelerating. A capex-to-revenue ratio above 75% would signal that returns are being pushed further into the future. Vertiv's order backlog growth will indicate whether the power/cooling bottleneck thesis remains intact.
Sources: ORCL Q2 FY2026 10-Q (Nov 2025), DELL Q4 FY2026 10-K (Jan 2026), SMCI Q2 FY2026 10-Q (Dec 2025), VRT Q4 2025 10-K (Dec 2025). All financial data from company filings via Diggr.