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.
| Applied Digital | Applied Optoelectronics | Advantest | |
|---|---|---|---|
| Moat rating | none The FY2026 10-K (filed 2026-07-29) shows contracted revenue, not a demonstrated competitive edge. About 1,410 MW is leased under 15-year take-or-pay, non-cancellable base terms worth about $36.2 billion, but only about 100 MW of the roughly 1.5 GW that is contracted and either operating or under construction was operating and earning revenue at May 31, 2026, and Item 1A says "lessees may have the right to terminate applicable leases if there are significant delays in construction." Item 1A also concedes "We do not have the resources to compete with larger providers of similar products or services at this time," and the Competition section names 13 power-advantaged developers the company competes with. Signed leases give revenue visibility, but the filing does not show a durable advantage. | narrow FY2025 10-K (Item 1, 'Our Technology' and 'Competition'): AOI is vertically integrated down to its own laser chips, fabricated exclusively in Sugar Land, TX with a combined MBE+MOCVD process it believes is 'unique in our industry' and 'difficult and time-consuming for other vendors to replicate'; the same filing calls the optical networking market 'intensely competitive' with larger, better-resourced rivals (Coherent, InnoLight, Eoptolink, Lumentum et al.), so the process edge is real but not dominant — https://www.sec.gov/Archives/edgar/data/1158114/000143774926005875/aaoi20251231_10k.htm | 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. |
| Moat type | none The 10-K claims three advantages: power-advantaged sites (it believes securing power and interconnection ahead of demand is 'the principal constraint on new HPC capacity and a core differentiator for us from many of our competitors'), a standardized 'franchise-style' design, and hyperscaler master service and master telecom service agreements 'that are difficult to obtain.' The filing does not show any of them to be durable. Its Competition section says competition 'centers on securing and developing sites with access to large-scale, reliable, and cost-competitive power and interconnection' and names 13 power-advantaged developers going after the same leases, and Item 1A concedes it lacks the resources to compete with larger providers. Signed leases are take-or-pay and non-cancellable, so a tenant leaving for convenience owes 'the full remaining contractual value,' but that is contractual lock-in on each lease rather than a moat source, so no moat type is assigned. | intangibles ip FY2025 10-K (Item 1, 'Our Technology' / 'Intellectual Property'): the differentiation the company itself leads with is process know-how — proprietary MBE laser fabrication combined with MOCVD ('to our knowledge, we are unique in incorporating MBE processes in the production of communications lasers in high volume'), 199 issued U.S. patents plus 140 in China/Taiwan, and explicit reliance on unpatented trade secrets — https://www.sec.gov/Archives/edgar/data/1158114/000143774926005875/aaoi20251231_10k.htm | 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'. |
| Leadership | behind The 10-K makes no leadership claim and gives no ranking or share figure. Item 1A concedes "We do not have the resources to compete with larger providers of similar products or services at this time" and that some rivals have "substantially greater liquidity and financial resources than we do." Its Competition section places APLD against established operators (Digital Realty, Equinix), hyperscalers that build their own capacity, independent developers and 13 named power-advantaged developers (IREN, Cipher Digital, TeraWulf, Hut 8, Riot, CleanSpark, HIVE, Core Scientific, Bitdeer, Galaxy Digital, Fermi, Keel Infrastructure, MARA). | fast follower Bifurcated: the FY2025 10-K self-describes an 'industry-leading position in the CATV market' serving 'a majority of the largest CATV equipment manufacturers,' but in datacenter optics — its AI-relevant line — AAOI is not among the vendors LightCounting's March 2026 quarterly update credits with record 2025 results (InnoLight, Coherent, Eoptolink, Fabrinet, Lumentum), so company-level it reads as a fast follower chasing the 800G/1.6T leaders — https://www.lightcounting.com/newsletter/en/march-2026-quarterly-market-update-380 | 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. |
| Pricing power | weak Item 1A says "Due to the limited number of hyperscalers, we expect that a limited number of customers will continue to account for a high percentage of our revenue for the foreseeable future," and that if customers' equipment usage declines or they discontinue use of its facilities, APLD "may be compelled to lower our lease prices in some instances or risk losing a significant customer." One customer was 59% of FY2026 revenue from continuing operations. Take-or-pay, non-cancellable terms protect contracted revenue over the base term, and Note 19 reports a $39.1M HPC Hosting segment profit on $385.3M of segment revenue in FY2026, but those terms are agreed with a small group of concentrated buyers. | moderate FY2025 10-K (MD&A cost/pricing discussion): gross margin fluctuates with 'decreases in average selling prices,' but in CATV — 53.8% of 2025 revenue — the company states 'we believe we face less downward price pressure than many of our competitors' due to the value of its outsourced design services; FY2025 gross margin was 30.0%, up from 24.8% in 2024 — https://www.sec.gov/Archives/edgar/data/1158114/000143774926005875/aaoi20251231_10k.htm | 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%. |
| Summary | Applied Digital designs, builds and operates purpose-built, liquid-cooled HPC data centers, which it calls 'AI factories', and leases the capacity to CoreWeave and investment-grade hyperscalers. At May 31, 2026 its 10-K lists five campuses (Polaris Forge 1-3 and Delta Forge 1-2) with about 1,410 MW contracted under roughly 15-year take-or-pay, non-cancellable leases worth about $36.2 billion over the base terms. The filing claims three sources of advantage: it controls power-advantaged sites, it uses a standardized 'franchise-style' design built to deliver about 150 MW in about 14 to 18 months, and it holds hyperscaler master agreements that are 'difficult to obtain.' The same document shows how early the company is. About 100 MW was operating and earning revenue. One customer was 59% of FY2026 revenue from continuing operations. It competes with Digital Realty, Equinix, hyperscalers that build their own capacity and 13 named power-advantaged developers, and it concedes that it lacks the resources to compete with larger providers. Signed leases give long-dated revenue visibility, but the filing does not show a durable competitive advantage. | AOI is a vertically integrated fiber-optics maker whose FY2025 revenue of $455.7M split 53.8% CATV and 42.9% internet datacenter (FY2025 10-K). Its defensible core is laser-fab process IP (MBE+MOCVD, all chips made in Sugar Land) plus highly automated U.S. module production the 10-K pitches as a supply-chain-security advantage. The AI datacenter line is ramping hard — Q2 2026 was a fifth consecutive record revenue quarter at $191.9M with 800G shipments more than doubling sequentially and demand forecast to outpace capacity through mid-2027 (Q2 2026 release) — but AAOI is absent from LightCounting's list of vendors that set records in the $23.8B 2025 transceiver market (InnoLight, Coherent, Eoptolink), so it ramps as a challenger, not a leader. The moat is narrow and concentration-risked: Digicomm was 53.1% and Microsoft 28.8% of 2025 revenue (10-K). | 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'. |
| Chain position | Developer and landlord of power-advantaged, liquid-cooled AI data-center capacity, leased long-term to CoreWeave and investment-grade hyperscalers. | Upstream optics supplier to the AI buildout: sells 800G/1.6T transceivers into hyperscale datacenters (Microsoft was 28.8% of 2025 revenue; Oracle 12.4% in 2024) and lasers/turn-key HFC equipment into CATV via distributor Digicomm (53.1% of 2025 revenue), per the FY2025 10-K — https://www.sec.gov/Archives/edgar/data/1158114/000143774926005875/aaoi20251231_10k.htm | 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. |
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| Long-horizon vote | -0.20 at weight 0.20 · swarm neutral Editorial prior, not backtested. | +0.06 at weight 0.20 · swarm neutral Editorial prior, not backtested. | +0.42 at weight 0.20 · swarm neutral Editorial prior, not backtested. |