Compare moats
Up to three covered companies, band by band. Every call is a curated editorial judgment, never a disclosed figure — and every band carries its cited basis.
| Advantest | Tesla, Inc. | X-energy | |
|---|---|---|---|
| Moat rating | wide A disclosed share that rose while margin expanded. The FY2025 Annual Securities Report and Business Report (84th term, filed 2026-06-26) lists as FY2025 progress: 'Further expanded our market share in the semiconductor tester (ATE) market (CY2024: 58%; CY2025: 65%)', earned on net sales of ¥1,128,610 million at an operating income to net sales ratio of 44.2%, 'an increase of 14.9 percentage points from the previous fiscal year'. The share is a company metric and the filing says so — 'the ratio of Advantest's semiconductor tester sales to the overall size of the semiconductor tester market', where 'The semiconductor tester market size is estimated independently by Advantest based on certain assumptions and available information'. The same filing names seven principal tester competitors (Teradyne, Inc., CCTech, Accotest, YC Corp., Cohu, Inc., UniTest Co., Ltd. and EXICON Ltd.), so this is a lead held against a named field rather than an empty one. | narrow Tesla's FY2025 10-K calls the automotive market "highly competitive" and expects it to "become even more competitive," and its energy-storage market "also highly competitive"; gross margin compressed from ~25.6% (FY2022) to ~18% (FY2023-FY2025) amid price cuts — a real but contested moat, not a wide one. | narrow Real but unbuilt. The Q2 2026 10-Q shows the moat resting on regulatory standing rather than delivered product: the NRC completed the Environmental Assessment for the Dow Long Mott construction permit application on 18 May 2026 with a Finding of No Significant Impact, yet no Xe-100 has been constructed or operated and two counterparties supplied nearly all income, with the U.S. Government at 90.3% and Dow at 4.4% of total revenue and grant income for the three months ended 30 June 2026. |
| Moat type | intangibles ip What management itself names as the source of the position is a proprietary platform. The July 29, 2026 Q1 FY2026 results briefing states: 'Our leading SoC Test platform, V93000, has been widely adopted across a broad range of customers in the increasingly complex AI semiconductor markets, where advanced packaging technologies including GPUs, ASICs, and CPUs are being adopted. It serves as a key foundation that underpins our competitive advantage.' The 84th-term report shows the spend behind it: R&D was approximately ¥71.4 billion in FY2024 and ¥78.1 billion in FY2025, 'The number of employees in its research and development division is approximately 30% of the Advantest workforce', and in the Test System Business Segment 'a large and ongoing investment in research and development is necessary in order to maintain market competitiveness'. Its stated IP mitigation is that 'Advantest strategically and proactively files patent applications during product development and prior to product shipment'. | intangibles ip The 10-K attributes Tesla's differentiation to a "vertically integrated business model, and focus on user experience," delivering "AI-related and enhanced software" via FSD (Supervised) and neural-network capabilities — a brand-plus-proprietary-technology (EV/battery + autonomy) intangible edge. | intangibles ip The IPO prospectus describes an 'intellectual property-driven business model': revenue is to come from technology fees for licensing the proprietary Xe-100 design plus proprietary TRISO-X fuel, and the company states it will not construct, own or operate the power plants. The durable assets are therefore patents and NRC licences, not plant, installed base or scale. |
| Leadership | clear leader The 84th-term report discloses Advantest's tester-market share at 65% in CY2025, up from 58% in CY2024, and carries the same 65% among its disclosed management metrics against a target of '58% or more'; the filing defines it as Advantest's semiconductor tester sales over a market size 'estimated independently by Advantest based on certain assumptions and available information'. The July 29, 2026 briefing names the platform behind that share — V93000, 'widely adopted across a broad range of customers in the increasingly complex AI semiconductor markets'. Teradyne, Inc. heads the filing's list of principal tester competitors. | co leader A leading global EV maker whose Model Y is among the world's best-selling vehicles, but the 10-K acknowledges "a significant and growing number of established and new" competitors entering EVs, and Tesla competes in autonomy/robotics as one of several players. | co leader The prospectus records X-energy as one of two awardees under the DOE Advanced Reactor Demonstration Program, and it holds the Oak Ridge HALEU fuel-fabrication licence; but it is not the NRC design-approval leader — the NRC issued a standard design approval to NuScale for the US460 small modular reactor, published at 90 FR / Federal Register document 2025-10123 on 4 June 2025, while the Xe-100 is being licensed indirectly through a customer's Part 50 construction permit and holds no design certification or approval of its own. |
| Pricing power | strong Q1 FY2026 gross profit was ¥255,553 million on net sales of ¥367,473 million, and the July 29, 2026 briefing states the resulting figure itself: 'Gross margin reached 69.5%', with 'an operating margin of 51.7%'. Management attributes that level to 'a favorable sales mix and limited inventory valuation losses amid the robust demand environment', not to price, and guides FY2026 full-year gross margin to 66–67% and operating margin to 49.4% after incorporating 'the impact of higher component costs, particularly for memory-related components'. FY2025 closed at a 44.2% operating margin, up 14.9 points year on year, on sales up 44.7%. | moderate Gross margin fell from ~25.6% (FY2022) to ~18.0% (FY2025) as Tesla cut prices to defend volume, though it remains above most auto peers (SEC financials in the FY2025 10-K). | weak Nothing has been priced in a market yet. The prospectus states the Xe-100 technology fee is a benchmarking assumption to be 'negotiated on a case by case basis' with no assurance customers will accept the proposed structure, and that Amazon holds first-priority manufacturing queue slots across 2031-2039, a right of first refusal and most-favoured pricing; the 10-Q records a 2025 warrant issued to a related-party customer with a $162.7 million grant-date fair value accounted for as consideration payable to a customer, i.e. a reduction of the transaction price. |
| Summary | Advantest sells the test step that certifies silicon before it ships, and its position there is disclosed rather than inferred: its own tester-market-share metric moved from 58% in CY2024 to 65% in CY2025 (84th-term Annual Securities Report), against a market size the filing says Advantest estimates itself. The lead is concentrated in SoC test — the July 29, 2026 briefing calls V93000 'our leading SoC Test platform' and 'a key foundation that underpins our competitive advantage' — and the customer base runs straight into the AI chain: NVIDIA International, Inc. was ¥228,273 million, or 20.2%, of FY2025 consolidated net sales, having been below the filing's 10% disclosure threshold the prior year, with Taiwan Semiconductor Manufacturing Co., Ltd. at ¥124,922 million, or 11.1%. Economics moved with it: FY2025 operating margin was 44.2%, up 14.9 points, and Q1 FY2026 gross margin reached 69.5%, which management attributes to 'a favorable sales mix and limited inventory valuation losses amid the robust demand environment' rather than to price. The counterweights sit in the same documents. The 84th-term report's customer-trust risk factor warns that if Advantest fails to meet expectations on ramp-up and post-sales service, 'the maintenance or expansion of Advantest's market share may be constrained'; it names separate competitor sets in test handlers (Hon. Precision, CCTech, Cohu, TechWing) and device interfaces (TSE, ISC, BeLINK) where no share is disclosed at all; and the July 29, 2026 briefing guides FY2026 full-year gross margin down to 66–67% having 'incorporated the impact of higher component costs, particularly for memory-related components, mainly in the second half of the fiscal year'. | Tesla's edge rests on a vertically integrated manufacturing model, a strong brand, the Supercharger network, a fast-growing energy-storage business, and the largest supervised-FSD fleet feeding its autonomy neural networks. But its FY2025 10-K itself calls both the automotive and energy-storage markets "highly competitive" and expects auto to become "even more competitive," and gross margin has compressed from ~26% to ~18%, so the moat is durable but contested rather than wide. | X-energy's defensible assets today are regulatory and intellectual, not commercial. NRC Special Nuclear Material Licence SNM-7007, issued 13 February 2026 for a 40-year licence period, authorises HALEU fuel manufacture at Oak Ridge, and the company's own prospectus calls it the first-ever Category II nuclear fuel facility licensed in the United States; the Long Mott construction permit application for four Xe-100 reactors has reached its uncontested mandatory NRC hearing, scheduled for 22 September 2026. Neither has yet produced a reactor or a commercial fuel pebble: the prospectus expects TX-1 to be completed in the first half of 2028, and the 10-Q describes present revenue as derived from cost-share agreements such as the DOE ARDP. The HALEU feedstock the fuel depends on is a live dependency rather than a settled advantage — the prospectus states HALEU enrichment services are available only in limited quantities globally and that customers procure the feedstock, and the 10-Q discloses a definitive enrichment agreement with Centrus Energy announced 6 August 2026 under a phased approach with prepayments by X-energy to support Centrus's domestic capacity programme. |
| Chain position | Back-end capital equipment: Advantest's testers certify devices after fabrication, and the 84th-term report's FY2025 major-customer table puts NVIDIA International, Inc. at 20.2% and Taiwan Semiconductor Manufacturing Co., Ltd. at 11.1% of consolidated net sales, with overseas sales 97.8% of the total. | Downstream AI application/end-user: consumes AI compute (NVIDIA) and custom inference silicon (Samsung/TSMC) to build autonomy (FSD/Robotaxi) and robotics (Optimus). | Upstream supplier of reactor technology and TRISO fuel to industrial-heat and data-centre power buyers; it licenses the design and fabricates the fuel rather than owning or operating the plants. |
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| Long-horizon vote | +0.42 at weight 0.20 · swarm neutral Editorial prior, not backtested. | +0.13 at weight 0.20 · swarm neutral Editorial prior, not backtested. | +0.05 at weight 0.20 · swarm neutral Editorial prior, not backtested. |