Compare moats

Corning's FY2025 Form 10-K (filed 12 February 2026) documents real protection in two places and hedges everywhere else. In Display it states flatly that 'We are the largest worldwide producer of glass substrates for flat panel displays' and credits a 'proprietary fusion manufacturing process, which we invented and is the cornerstone of our technology leadership in the display glass industry'; in Optical Communications it says 'We maintain a leadership position in the segment's principal product groups, which include carrier and enterprise networks'. But the Competition section opens on a company-wide concession - 'Some of these competitors are larger than we are, and some have broader product lines' - and closes that opening paragraph with 'There is no assurance that we will be able to maintain or improve our market position or competitive advantage', a hedge set over the five per-segment paragraphs that follow, the last of which has Life Sciences facing 'competition from large distributors that have pursued backward integration or introduced private label products'. In optical it expects 'industry consolidation, pricing pressure and competition for the innovation of new products' to persist. The risk factors add that Optical Communications and Display 'generate a significant amount of the Company's profits and cash flow' and are 'subject to pricing pressure', while the customer base is concentrated enough that customers 'may possess substantial leverage in negotiating contractual obligations' - the filing's own table puts two combined end customers at 28% of 2025 Optical Communications segment net sales, three at 59% of Display, two at 43% of Specialty Materials and three at 61% of Automotive. Protection that is genuine but confined to part of the portfolio, held against named larger rivals and customers with that much leverage, is narrow rather than wide.

source: sec.gov

The FY2025 Form 10-K describes an edge that holds on large, complex work but not across the trade. On the advantage side, it says an invitation to bid "is often conditioned upon prior experience, technical capability, and financial strength", that its largest projects "typically require significant technical and management skills and the financial strength to obtain performance bonds, which are often a condition to bidding for and winning these projects", and that those projects "represented approximately 58% of our electrical and mechanical construction services revenues in 2025". It adds: "We believe our financial position, operating results, access to bank credit and surety bonding, technical expertise including prefabrication, VDC, and BIM capabilities, and safety record, among other factors, give us an advantage over many of our competitors." Operating margin was 10.1% in 2025 against 9.2% in 2024, and the filing notes the 2025 figure includes a $144.9 million gain on the sale of the United Kingdom operations that "positively impacted operating margin by 85 basis points". On the limiting side, the same Competition section says "relatively few barriers exist to prevent entry into the electrical and mechanical construction services industry" and "there are relatively few barriers to entry into the building services industry". Item 1A adds that "Certain of our competitors have lower overhead cost structures and, therefore, are able to provide their services at lower rates than we are currently able to provide" and that work "is frequently awarded through a competitive bidding process". An advantage confined to bonded, technically demanding projects, in a trade the company itself calls easy to enter, is a narrow moat, not a wide one.

source: emcorgroup.com

Baidu's search franchise still leads, but it earns less each year and the company has written part of it down. Its 2025 annual report on Form 20-F (https://www.sec.gov/Archives/edgar/data/1329099/000119312526109289/d38065d20f.htm) says revenue from online marketing services "declined in 2024 and 2025, primarily due to our ongoing AI transformation, which impacted the monetization approach, as well as unfavorable macroeconomic conditions", and that "the increasing prevalence of AI-powered search engines and virtual assistants is fundamentally altering user behavior", so that users "may have less need to click on traditional search results or sponsored links". In 2025 it recognised RMB16.2 billion of impairment losses on its Core asset group after a recoverability test it attributes to "fluctuations in the external environment, in particular the rapid iteration of AI technology, and changes in our internal operations", and reported an operating loss of RMB5.8 billion (operating income of RMB10.4 billion excluding the impairment). The decline continued into 2026: the second-quarter results (https://ir.baidu.com/news-releases/news-release-details/baidu-announces-second-quarter-2026-results, 2026-08-18) show what Baidu calls Legacy Business revenue at RMB10.4 billion, down 23% year over year, and the CEO says "our online marketing business remains under pressure". The lead itself is still large by an independent count, with StatCounter putting Baidu at 46.65% of China's search engine market in September 2026. A lead that monetises less each year, and has needed an impairment, is an eroding moat.

source: sec.gov

What the filing keeps pointing at is invented process technology and the patent estate fencing it, not a network and not raw size. The FY2025 10-K repeats 'Patent protection is important to the segment's operations' word for word in four of its five reportable segments - Optical Communications, Specialty Materials, Automotive and Life Sciences - and gives Display a stronger variant, 'Patent protection and proprietary trade secrets are important to the Display segment's operations'. It reports about 11,375 unexpired patents owned worldwide at the end of 2025 (about 4,015 of them U.S.), about 370 U.S. and over 970 non-U.S. grants during 2025 and about 5,650 applications in process, and states 'We have historically enforced, and will continue to enforce, our intellectual property rights.' The single clearest asset is a process rather than a product - the fusion draw Corning says it invented and calls the cornerstone of its display-glass technology leadership, guarded in Display by 'proprietary trade secrets'. Even the cost advantage the filing claims in optical is sourced back to the same place: 'Our large-scale manufacturing experience, fiber process, technology leadership and intellectual property provide cost advantages relative to several of our competitors' - scale is described there as a consequence of the process, not the origin of the advantage, which is why this is an IP-and-know-how moat rather than a cost-scale one. The estate is broad rather than cliff-edged: 'no one patent is considered material to any segment', and about 740 worldwide patents, 6.5% of the portfolio, expire between 2026 and 2028.

source: sec.gov

The 10-K places the advantage in capabilities that come with size rather than in customer lock-in or protected technology. The edge it names is "financial position, operating results, access to bank credit and surety bonding, technical expertise including prefabrication, VDC, and BIM capabilities, and safety record", delivered through "approximately 100 operating subsidiaries" and approximately 44,000 employees. MD&A credits the mechanical construction segment's 2025 result to "a more favorable mix of work and better project execution, including enhanced productivity, due in part to investments in virtual design and construction, prefabrication, and automation". Item 1A makes bonding a scale matter: "if we were to experience an interruption or reduction in the availability of bonding, we may be unable to compete for or work on certain projects." The filing cites no patents as a source of advantage, and switching costs are thin by its own account: "Many of our contracts, especially our building and industrial services contracts, may be canceled or delayed on short notice".

source: emcorgroup.com

The moat Baidu is losing is a traffic-driven network. The 20-F says it competes for users and customers "on the basis of user traffic, cyber security, quality (relevance) of search (and other marketing and advertising) results, availability and user experience of products and services, distribution channels and the number of associated third-party websites", and that its content ecosystem depends on attracting creators "by leveraging our user traffic and enhance user engagement through the provision of attractive content, so as to create a virtuous cycle". Advertisers use its P4P platform "to bid for priority placement of paid sponsored links and reach users who search for information related to their products or services", and Baidu Union partners carry its search engine and ads on their own properties. AI answers are weakening that loop: the same filing warns that conversational tools risk "reducing traffic to our platforms and diminishing the inventory and effectiveness of our search-based advertising", and Baidu App's monthly active users were 644 million in June 2026 (second-quarter results) against 679 million in December 2025 (20-F).

source: sec.gov

The FY2025 10-K makes exactly one unqualified rank claim and it is Display: 'We are the largest worldwide producer of glass substrates for flat panel displays', with only AGC Inc. and Nippon Electric Glass Co., Ltd. named as principal competitors. The second-strongest claim is Optical Communications' - 'We maintain a leadership position in the segment's principal product groups, which include carrier and enterprise networks' - asserted against Amphenol, Fujikura and its subsidiary America Fujikura Ltd., Sumitomo and Prysmian Group S.p.A. Those two lines carry the company: Optical Communications was 38% of total segment net sales in 2025 and Display 23%, and the segment table credits them with $1,048 million and $993 million respectively of the $2,747 million of reportable-segment net income. The band is a company-level judgment weighted to them, and it does not extend across the portfolio - Automotive claims only 'a strong market position', and Life Sciences describes itself as 'a leading developer, manufacturer and global supplier of laboratory products for over 110 years' while competing against the much larger Thermo Fisher Scientific Inc. and Danaher Corporation on $972 million of 2025 sales.

source: sec.gov

The 10-K gives no market share. It calls the field "highly fragmented" with "thousands of small companies across the United States", adds that "there are a number of larger companies focused on providing electrical and/or mechanical construction services, such as APi Group Corporation, Comfort Systems USA, Inc., Dycom Industries, Inc., Everus Construction Group, Inc., IES Holdings, Inc., MasTec, Inc., MYR Group Inc., Quanta Services, Inc., and Tutor Perini Corporation", and describes EMCOR as "one of the largest specialty contractors in the United States", which is the company's own account. Outside the filing: Wikipedia's EMCOR article (https://en.wikipedia.org/wiki/Emcor) states that "In 2025, the company was ranked 2nd by Engineering News-Record on its list of the largest 600 specialty contractors by revenue"; its footnote links ENR's 2025 Top 600 preview page, which refused this fetch with HTTP 403, so the rank was not read at ENR itself (the footnote's title also reads 2024 while its link is the 2025 page). Statista's summary of the ENR survey for 2018 (https://www.statista.com/statistics/467307/leading-us-firms-in-mechanical-based-on-revenue, published Oct 21, 2019) says "EMCOR Group was ranked as the leading mechanical contractor based in the United States in 2018" and that the overall survey was "topped by electrical contractor Quanta Services and closely followed by EMCOR Group". A filing-based check agrees on scale against one named rival: stored fundamentals from the FY2025 10-Ks show EMCOR revenue of $16,986,422 thousand against $9,101,641 thousand for Comfort Systems USA (https://www.sec.gov/Archives/edgar/data/1035983/000110465926017530/0001104659-26-017530-index.htm). Second place on a revenue ranking of 600 specialty contractors, in a field the 10-K says has thousands of firms, is co-leadership rather than clear leadership; the ranking evidence is second-hand or dated, so the band is held at co-leader and no higher.

source: emcorgroup.com

Baidu leads search by an independent count, but not the AI businesses that now make up half of its core revenue. StatCounter (https://gs.statcounter.com/search-engine-market-share/all/china, September 2026 figures) puts Baidu at 46.65% of China's search engine market across all platforms, against 21.76% for Bing, and at 60.15% on mobile, though on desktop it shows Bing ahead at 41.27% to Baidu's 28.32%. In AI cloud, the 20-F cites IDC's ranking of Baidu AI Cloud as "the No.1 AI cloud provider for the sixth consecutive year" in China's AI public cloud market for 2024, but that figure is relayed by Baidu and covers 2024, and IDC data reported by KrASIA (https://kr-asia.com/how-bytedances-volcano-engine-holds-nearly-half-of-chinas-maas-market, 2026-05-13) put ByteDance's Volcano Engine at 49.5% of China's model-as-a-service market in 2025. In models, Artificial Analysis's leaderboard (https://artificialanalysis.ai/leaderboards/models, read 2026-10-10) gives ERNIE 5.0 Thinking Preview an estimated Intelligence Index of 14, against 45 for Alibaba's Qwen3.8 Max (0902) and Z AI's GLM-5.3 (max). A clear lead in search alongside a contested AI cloud position and a lagging model family makes Baidu a co-leader rather than a clear leader.

source: sec.gov

The FY2025 10-K shows prices being raised and sticking, and in the same breath shows what caps them. The results table puts gross margin at 36% of net sales in 2025 against 33% in 2024, and MD&A attributes the three-point gain to 'higher volume and the impact of actions taken by management to improve profitability, including raising prices, reducing costs and increasing productivity.' Display is the cleanest case: after resetting its core rate from 107 to 120 Japanese yen to the dollar, 'we implemented pricing actions in the second half of 2024', and 'The effects of the price increases on slightly higher volumes in 2025, compared to the prior period, substantially offset the impact of resetting the core rate.' The ceiling is disclosed in the same document: Optical Communications and Display are 'subject to pricing pressure', concentrated customers 'may possess substantial leverage in negotiating contractual obligations', and a risk factor warns that 'Increasing our prices to our customers may cause certain of our customers to push out, cancel or refrain from purchasing our products'. Price that holds on the back of rising volume, against customers that concentrated, is moderate rather than strong.

source: sec.gov

Margins have widened, but the filing says most work is bid. The 2025 Annual Report's five-year highlights show gross profit of $1,501,737 thousand on revenues of $9,903,580 thousand in 2021, $2,089,339 thousand on $12,582,873 thousand in 2023 and $3,282,988 thousand on $16,986,422 thousand in 2025; MD&A gives gross profit margin of 19.3% in 2025 against 19.0% in 2024. The Q2 2026 release (https://emcorgroup.com/application/files/3517/8535/6062/2Q26_Earnings_Release_Final.pdf) reports operating margin of 10.6% against 9.6% a year earlier, and the chief executive said "We remain focused on maintaining pricing discipline, carefully selecting project opportunities, and executing at a high level across our operations." The limits are in the 10-K: "Competition can place downward pressure on our contract prices and profit margins"; on commodities, "While we believe we can increase our prices to adjust for some price increases in commodities, there can be no assurance that price increases of commodities, if they were to occur, would be recoverable", and "certain of our contracts do not allow us to adjust our prices"; and Note 3 shows projects whose profitability was revised down by more than $1.0 million each reduced operating results by $85,941 thousand in 2025, against $66,319 thousand in 2024.

source: emcorgroup.com

Costs are rising faster than revenue, and Baidu has been cutting model prices. In 2025, per the 20-F, Baidu General Business revenue fell 2% to RMB102.5 billion while its cost of revenues rose 15% from RMB44.8 billion to RMB51.5 billion, "mainly related to development of cloud services", and the filing warns of "downward pressure on our operating margin". Online marketing revenue fell in both 2024 and 2025, and Legacy Business revenue was down 23% year over year in the second quarter of 2026. Baidu says it released ERNIE 4.5 Turbo and ERNIE X1 Turbo "delivering improved performance at significantly lower pricing, making them among the most cost-effective options on the market", and IDC data reported by KrASIA says the model-as-a-service leader Volcano Engine's "per-token price was below the industry average". The one premium claim, that AI-native marketing customers are "willing to pay a premium", is Baidu's own, and that line's revenue was "approximately flat year over year" in the second quarter of 2026.

source: sec.gov

Corning sits a layer beneath the AI build-out, supplying the glass and fiber rather than the compute. The FY2025 10-K describes 'optical fiber, cable and connectivity solutions for advanced communications networks, such as fiber to the home and data centers, enabling artificial intelligence', and says 'the rapid acceleration of artificial intelligence ("AI") is driving strong demand for fiber and connectivity products inside and between data centers', citing purpose-built parts such as the SMF-28e Contour fiber, 'a 40% smaller fiber', and the Contour Flow Cable 'which can fit double the fiber into the same cable diameter'. It also sells into chipmaking, through HPFS Fused Silica, ULE Ultra-Low Expansion Glass and the EXTREME ULE Glass introduced in 2024 to 'support chip manufacturers in meeting the rapidly growing demand for advanced and intelligent technologies'. The exposure is already in the numbers: Optical Communications net sales rose 35% to $6,274 million in 2025, which the filing attributes first to 'continued growth in our Enterprise business driven by strong demand for our Generative AI products'.

EMCOR builds the electrical and mechanical plant inside facilities, increasingly data centres: the 10-K says capital spending on data center infrastructure "is rapidly expanding, which has increased demand for our services in recent years". It works directly for owners and "indirectly by acting as a subcontractor to general contractors, systems suppliers, construction managers, developers, property managers, and other subcontractors". Upstream, "we rely on third-party vendors and manufacturers to supply much of the materials and equipment necessary for our operations", with commodity exposure to "copper and steel" and fuel for a fleet of approximately 14,400 vehicles.

Baidu spans several layers of China's AI stack. Its 20-F describes "a full AI stack of four layers, including cloud infrastructure, deep learning framework developed in-house, foundation models, and applications", with AI infrastructure "powered by a diverse mix of domestic and international high-performance computing resources, including our own self-developed AI computing architecture" and its own Baidu AI Chip. It sells GPU Cloud capacity and Qianfan model services to enterprises and the public sector, with a Qianfan model library that includes "leading third-party and open-sourced models" as well as ERNIE, and it funds this largely from online marketing sold to advertisers through search and feed.

• Automotive ceramic substrates and particulate filters Unknown · Moderate source: sec.gov
• Corning Gorilla Glass cover materials Unknown · Moderate source: sec.gov
• Display glass substrates Leader · Deep source: sec.gov
• Hemlock hyper-pure polysilicon and solar products Unknown · Low source: sec.gov
• Life Sciences labware and consumables Unknown · Low source: sec.gov
• Optical fiber, cable and connectivity solutions Leader · Moderate source: sec.gov
• Semiconductor and precision optics Unknown · Moderate source: sec.gov

• Building services (United States) Unknown · Low source: emcorgroup.com
• Electrical construction and facilities services (United States) Unknown · Moderate source: emcorgroup.com
• Industrial services (United States) Unknown · Low source: emcorgroup.com
• Mechanical construction and facilities services (United States) Top 3 · Moderate source: emcorgroup.com

• Apollo Go robotaxi Top 3 · Moderate source: ir.baidu.com
• Baidu AI Cloud Infra (GPU Cloud and Qianfan) Top 3 · Moderate source: sec.gov
• Baidu Search and Baidu App (online marketing) Leader · Moderate source: gs.statcounter.com
• ERNIE foundation models Unknown · Low source: artificialanalysis.ai

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