US Public Companies

public-companies

Every SEC-registered operating company with a security listed on a US exchange, each with the vertical its SIC code gives.

Index 12.0 · scanned 2026-10-11 · up to 32 URLs per site · 5239 organizations · 1745 scanned (33.3% coverage) · 3029 with no published URL

Median score 53 across 1745 sites
Middle half 44–59 spread around the median
Full range 18–77 lowest to highest
Gated 700 of 1745 block AI crawlers outright

Middle of 14 cohorts. All cohorts 50 · best cohort 58.

Where this list came from

The source, and how we filtered it

Source SEC company tickers by exchange, with EDGAR submissions (SIC code, website) and, for the S&P 500 flag, the Wikipedia constituent list, US Securities and Exchange Commission (SEC), with Wikidata and Wikipedia (2026-10-11)
LicenseSEC filings and the SEC's published data files are a work of the United States federal government and carry no domestic copyright (17 U.S.C. § 105). Web addresses found nowhere on EDGAR come from Wikidata (CC0) or from our own crawl of the S&P 500 list, disclosed per row. Membership of the S&P 500 comes from Wikipedia's constituent list, CC BY-SA 4.0, the same license this cohort goes out under; “S&P 500” is a registered trademark of S&P Dow Jones Indices LLC, naming the constituents is descriptive use, and nothing here is endorsed by or affiliated with S&P.
How we filtered itEvery CIK the SEC lists with a security on Nasdaq, NYSE, CBOE or TXSE (OTC and unlisted entries are not listed securities and are left out), read against its EDGAR submissions record for the SIC code, the company's own website and its tickers. Excluded as not operating companies: SIC 6221 (commodity pools and trusts), 6726 (unit investment trusts and investment vehicles), 6189 (asset-backed issuers), 6770 (blank-check shells), registrants with no SIC code (ETFs and grantor trusts) and registrants whose name says fund or exchange-traded product. A company with several share classes is one row. The web address is EDGAR's own `website` where it has one; else the address found by crawling for the S&P 500 list; else Wikidata's official website (P856) for the entity whose SEC CIK property (P5531) matches; else the row stays with a note. Each row says which. The vertical of each row is its SIC code's, through one table with ticker overrides (ten7_air/census/build_public_companies.py). Companies that share a website are all kept and measured once. The roster is as of the build date, and rows are in CIK order because the SEC data carries no measure of size to rank by. See scripts/prepare_public_companies.py.
Instead ofThe S&P 500 alone, which this replaces: a list of 500 chosen by a committee, where the SEC's is every listed company and the 500 stay identifiable inside it.
Built2026-10-11

The filtering is ours and is disclosed as ours. The source published a list; the decision about which rows of it belong in a cohort was a judgment call, and it is written down so somebody can disagree with it.

Distribution

Where the 1745 sites land

GradeShare of the cohort SitesShare
Adequate
427 24.5%
Not ready
315 18.1%
Weak
996 57.1%
Strong
7 0.4%
By dimension

What the cohort earns, dimension by dimension

The mean share of each dimension’s available points that this cohort earned. Low here means the whole sector is weak on it, not that one site dragged an average down. The per-site spread is in the dataset.

DimensionMean share earned Mean
#1 · Reach
These parameters determine the fundamental ease of access that AI has to your site information.
72%
#2 · Read
AI generally turns off JavaScript. Does your site information survive without it?
45%
#3 · Understand
Does a machine know who and what you are?
29%
#4 · Act
Sitemaps, redirects, 404s, licensing terms, and not wasting the crawl budget.
63%
How much of each site we read

The cap is 32 URLs and it is a ceiling, not a promise. A portal whose every link points at a different host yields one page; a university yields the full sample. The median here is 32, the range 1–32, published so that "we sampled 32 URLs per site" cannot become a claim the data does not support.

51 sites in this cohort served a certificate we could not verify. They were read anyway and scored normally, because reporting no response for a site every browser loads would describe our TLS stack rather than the site, and each one carries the finding in its row.

Where this cohort fails

2 tests almost nobody in this cohort passes

Universal — nobody passes these 2 checks
TestWhat it asks FailingOf Points
EXT-17 Do you list your agents in your domain's DNS records?
100.0%
1625 0
EXT-7 If you run real question-and-answer pages, are they marked as such?
100.0%
43 0
Near-universal — 95% and above 11 checks · 2 of them worth 2 points or more
TestWhat it asks FailingOf Points
EXT-12 Do you tell search engines the moment a page changes?
99.9%
1745 0
EXT-16 Do you publish a card or a skills list for the agents you run?
99.8%
1745 0
EXT-11 Have you marked the part of a page that answers a spoken question?
99.7%
1745 0
PST-2 Have you posted a Content Signals statement about what AI may do with your content?
99.1%
1745 0
EXT-2 Do you list your APIs and agent tools where agents look for them?
98.8%
259 0
RED-10 Do you offer a plain-text (Markdown) copy of your pages?
98.5%
1272 2
EXT-14 Does your site offer its actions to AI browsers as tools?
98.4%
1603 0
RED-12 If a machine asks for Markdown, does your site give it?
97.9%
1745 2
EXT-18 Do you tell AI shoppers how they can pay?
96.8%
188 0
RED-5 Do your PDFs and images have their own rules for search and quoting?
96.1%
1147 1
EXT-15 Can an AI agent find out how to sign in to your site?
95.2%
21 0
Common — 90 to 95% 3 checks · 1 of them worth 2 points or more
TestWhat it asks FailingOf Points
UND-5 Does the author label in your page code point to that person?
94.3%
1238 1
UND-1 Does your site say clearly who you are?
91.5%
1745 2
EXT-1 Do you publish an llms.txt file for coding assistants?
90.0%
1745 0

Coral bars mark tests worth 2 points or more, the failures that actually move a score.

Every site

Every 5,239, named, with a report for each

Whether or not it has been scanned. Rows with no website on record, sites that were unreachable and sites that turned us away stay in the table with the reason on them, and none of them enters an average: dropping them would shrink the population to the part that was easy to measure. A few points between two neighbors is noise. The box filters every row in the cohort, not only the page you are on; click a header to sort the rows on this page by name or by score.

Showing 201–300 of 5,239 · page 3 of 53

SiteScore GatedPages read Report
Kelly Services Inc kellyservices.comKELYA, KELYB · Services-Help Supply Services (SIC 7363); web address from Wikidata (P856), not EDGAR 44 Gated 32
Kennametal Inc kennametal.comKMT · Machine Tools, Metal Cutting Types (SIC 3541); web address from Wikidata (P856), not EDGAR 31 Gated 1
Kewaunee Scientific Corp /DE/ no website on recordKEQU · Laboratory Apparatus & Furniture (SIC 3821); no web address found — No —
Kimberly Clark Corp kimberly-clark.comblockedKMB · Converted Paper & Paperboard Prods (No Contaners/Boxes) (SIC 2670); S&P 500 · Consumer Staples; web address found by crawling for the S&P 500 list, not carried by EDGAR; not measured: HTTP 403 (Cloudflare) — No —
Kirby Corp kirbycorp.comKEX · Water Transportation (SIC 4400); web address from Wikidata (P856), not EDGAR 42 Gated 32
Korn Ferry kornferry.comKFY · Services-Employment Agencies (SIC 7361); web address from Wikidata (P856), not EDGAR 73 No 32
Koss Corp koss.comKOSS · Household Audio & Video Equipment (SIC 3651); web address from Wikidata (P856), not EDGAR 53 Gated 32
Primeenergy Resources Corp no website on recordPNRG · Crude Petroleum & Natural Gas (SIC 1311); no web address found — No —
Kroger Co kroger.comKR · Retail-Grocery Stores (SIC 5411); S&P 500 · Consumer Staples; web address found by crawling for the S&P 500 list, not carried by EDGAR 33 Gated 1
Kulicke & Soffa Industries Inc no website on recordKLIC · Semiconductors & Related Devices (SIC 3674); no web address found — No —
LA-Z-Boy Inc la-z-boy.comLZB · Household Furniture (SIC 2510); web address from Wikidata (P856), not EDGAR 46 No 1
Marzetti Co marzetti.comMZTI · Canned, Frozen & Preservd Fruit, Veg & Food Specialties (SIC 2030); web address from Wikidata (P856), not EDGAR 44 Gated 32
LEE ENTERPRISES, Inc lee.netunreachableLEE · Newspapers: Publishing or Publishing & Printing (SIC 2711); web address from Wikidata (P856), not EDGAR — No —
Valhi Inc /DE/ valhi.netVHI · Industrial Inorganic Chemicals (SIC 2810); web address from Wikidata (P856), not EDGAR 33 Gated 1
ELI LILLY & Co lilly.comblockedLLY · Pharmaceutical Preparations (SIC 2834); S&P 500 · Health Care; web address found by crawling for the S&P 500 list, not carried by EDGAR; not measured: HTTP 403 (Cloudflare) — No —
Lincoln Electric Holdings Inc lincolnelectric.comblockedLECO · Metalworkg Machinery & Equipment (SIC 3540); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 (Akamai) — No —
Lincoln National Corp lincolnfinancial.comLNC, LNC-PD · Life Insurance (SIC 6311); web address from Wikidata (P856), not EDGAR 34 Gated 32
Loews Corp loews.comblockedL · Fire, Marine & Casualty Insurance (SIC 6331); S&P 500 · Financials; web address found by crawling for the S&P 500 list, not carried by EDGAR; not measured: HTTP 403 (Cloudflare) — No —
Louisiana-Pacific Corp no website on recordLPX · Lumber & Wood Products (No Furniture) (SIC 2400); no web address found — No —
Lowes Companies Inc lowes.comLOW · Retail-Lumber & Other Building Materials Dealers (SIC 5211); S&P 500 · Consumer Discretionary; web address found by crawling for the S&P 500 list, not carried by EDGAR 44 Gated 1
Lsb Industries, Inc. no website on recordLXU · Industrial Inorganic Chemicals (SIC 2810); no web address found — No —
Lgl Group Inc no website on recordLGL · Electronic Components, NEC (SIC 3679); no web address found — No —
Manitowoc Co Inc manitowoc.comblockedMTW · Construction Machinery & Equip (SIC 3531); web address from Wikidata (P856), not EDGAR; not measured: HTTP 429 — No —
Marcus Corp marcuscorp.comblockedMCS · Services-Motion Picture Theaters (SIC 7830); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 (Cloudflare) — No —
Marine Petroleum Trust no website on recordMARPS · Oil Royalty Traders (SIC 6792); no web address found — No —
Marsh & McLennan Companies, Inc. marshmclennan.comMRSH · Insurance Agents, Brokers & Service (SIC 6411); S&P 500 · Financials; web address found by crawling for the S&P 500 list, not carried by EDGAR 65 No 1
Masco Corp /DE/ masco.comMAS · Heating Equip, Except Elec & Warm Air; & Plumbing Fixtures (SIC 3430); S&P 500 · Industrials; web address found by crawling for the S&P 500 list, not carried by EDGAR 49 Gated 32
Mattel Inc /DE/ corporate.mattel.comMAT · Dolls & Stuffed Toys (SIC 3942); vertical set by hand: a consumer brand that sells direct online; its SIC code is the factory's; web address from Wikidata (P856), not EDGAR 48 No 32
Matthews International Corp no website on recordMATW · Nonferrous Foundries (Castings) (SIC 3360); no web address found — No —
Maui Land & Pineapple Co Inc mauiland.comMLP · Real Estate (SIC 6500); web address from Wikidata (P856), not EDGAR 56 No 8
McCormick & Co Inc mccormickcorporation.comMKC, MKC-V · Miscellaneous Food Preparations & Kindred Products (SIC 2090); S&P 500 · Consumer Staples; web address found by crawling for the S&P 500 list, not carried by EDGAR 62 No 32
McDonalds Corp mcdonalds.comblockedMCD · Retail-Eating Places (SIC 5812); S&P 500 · Consumer Discretionary; web address found by crawling for the S&P 500 list, not carried by EDGAR; not measured: HTTP 403 (Akamai) — No —
S&P Global Inc. spglobal.comblockedSPGI · Services-Consumer Credit Reporting, Collection Agencies (SIC 7320); S&P 500 · Financials; web address found by crawling for the S&P 500 list, not carried by EDGAR; not measured: HTTP 403 (Akamai) — No —
Soluna Holdings, Inc no website on recordSLNH, SLNHP · Finance Services (SIC 6199); no web address found — No —
Gencor Industries Inc no website on recordGENC · Construction Machinery & Equip (SIC 3531); no web address found — No —
CVS HEALTH Corp cvshealth.comblockedCVS · Retail-Drug Stores and Proprietary Stores (SIC 5912); S&P 500 · Health Care; web address found by crawling for the S&P 500 list, not carried by EDGAR; not measured: HTTP 403 — No —
Mercury General Corp mercuryinsurance.comMCY · Fire, Marine & Casualty Insurance (SIC 6331); web address from Wikidata (P856), not EDGAR 54 No 32
Mesabi Trust no website on recordMSB · Mineral Royalty Traders (SIC 6795); no web address found — No —
Methode Electronics Inc methode.comMEI · Electronic Connectors (SIC 3678); web address from Wikidata (P856), not EDGAR 33 Gated 1
Evi Industries, Inc. no website on recordEVI · Services-Personal Services (SIC 7200); no web address found — No —
Siebert Financial Corp no website on recordSIEB · Security Brokers, Dealers & Flotation Companies (SIC 6211); no web address found — No —
Microvision, Inc. microvision.comMVIS · Electronic Components, NEC (SIC 3679); web address from Wikidata (P856), not EDGAR 60 No 32
Entergy Corp /DE/ entergy.comETR · Electric Services (SIC 4911); S&P 500 · Utilities; web address found by crawling for the S&P 500 list, not carried by EDGAR 53 No 32
Middlesex Water Co middlesexwater.comMSEX · Water Supply (SIC 4941); web address from Wikidata (P856), not EDGAR 70 No 32
Millerknoll, Inc. hermanmiller.comblockedMLKN · Office Furniture (SIC 2520); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 (Cloudflare) — No —
Mexco Energy Corp no website on recordMXC · Crude Petroleum & Natural Gas (SIC 1311); no web address found — No —
MSA Safety Inc msasafety.comMSA · Orthopedic, Prosthetic & Surgical Appliances & Supplies (SIC 3842); web address from Wikidata (P856), not EDGAR 47 Gated 1
3M CO 3m.comMMM · Surgical & Medical Instruments & Apparatus (SIC 3841); S&P 500 · Industrials; web address found by crawling for the S&P 500 list, not carried by EDGAR 33 Gated 1
Entergy Mississippi, LLC no website on recordEMP · Electric Services (SIC 4911); no web address found — No —
Mitsubishi Ufj Financial Group Inc mufg.jpMUFG · Commercial Banks, NEC (SIC 6029); web address from Wikidata (P856), not EDGAR 33 Gated 1
Dycom Industries Inc no website on recordDY · Water, Sewer, Pipeline, Comm & Power Line Construction (SIC 1623); no web address found — No —
Modine Manufacturing Co no website on recordMOD · Motor Vehicle Parts & Accessories (SIC 3714); no web address found — No —
Mdu Resources Group Inc mdu.comMDU · Natural Gas Distribution (SIC 4924); web address from Wikidata (P856), not EDGAR 56 No 32
Moog Inc. moog.comMOG-A, MOG-B · Misc Industrial & Commercial Machinery & Equipment (SIC 3590); web address from Wikidata (P856), not EDGAR 63 No 32
Motorola Solutions, Inc. motorolasolutions.comblockedMSI · Radio & Tv Broadcasting & Communications Equipment (SIC 3663); S&P 500 · Information Technology; web address found by crawling for the S&P 500 list, not carried by EDGAR; not measured: HTTP 403 (Imperva) — No —
Qwest Corp qwest.comCTGG, CTHH · Telephone Communications (No Radiotelephone) (SIC 4813); web address from Wikidata (P856), not EDGAR 58 No 1
Intergroup Corp no website on recordINTG · Operators of Apartment Buildings (SIC 6513); no web address found — No —
Myers Industries Inc no website on recordMYE · Plastics Products, NEC (SIC 3089); no web address found — No —
Napco Security Technologies, Inc no website on recordNSSC · Communications Equipment, NEC (SIC 3669); no web address found — No —
Nathans Famous, Inc. nathansfamous.comNATH · Retail-Eating Places (SIC 5812); web address from Wikidata (P856), not EDGAR 52 No 1
National Beverage Corp no website on recordFIZZ · Bottled & Canned Soft Drinks & Carbonated Waters (SIC 2086); no web address found — No —
National Fuel Gas Co nationalfuelgas.comNFG · Natural Gas Distribution (SIC 4924); web address from Wikidata (P856), not EDGAR 53 Gated 2
Tenet Healthcare Corp tenethealth.comblockedTHC · Services-General Medical & Surgical Hospitals, NEC (SIC 8062); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 (Cloudflare) — No —
Nrc Health nrchealth.comNRC · Services-Commercial Physical & Biological Research (SIC 8731); web address from Wikidata (P856), not EDGAR 58 Gated 32
National Rural Utilities Cooperative Finance Corp /DC/ no website on recordNRUC · Miscellaneous Business Credit Institution (SIC 6159); no web address found — No —
Bank of America Corp /DE/ bankofamerica.comBAC, BML-PG, BML-PL · National Commercial Banks (SIC 6021); S&P 500 · Financials; web address found by crawling for the S&P 500 list, not carried by EDGAR 44 No 30
NCR Voyix Corp ncrvoyix.comVYX · Calculating & Accounting Machines (No Electronic Computers) (SIC 3578); web address from Wikidata (P856), not EDGAR 54 No 32
Entergy New Orleans, LLC no website on recordENJ, ENO · Electric & Other Services Combined (SIC 4931); no web address found — No —
New York Times Co no website on recordNYT · Newspapers: Publishing or Publishing & Printing (SIC 2711); no web address found — No —
NPK International Inc. newpark.comNPKI · Services-Miscellaneous Equipment Rental & Leasing (SIC 7350); web address from Wikidata (P856), not EDGAR 50 Gated 32
Nli Holdings, Inc. nl-ind.comNL · Industrial Inorganic Chemicals (SIC 2810); web address from Wikidata (P856), not EDGAR 61 No 1
Nordson Corp nordson.comblockedNDSN · General Industrial Machinery & Equipment, NEC (SIC 3569); S&P 500 · Industrials; web address found by crawling for the S&P 500 list, not carried by EDGAR; not measured: HTTP 403 (Cloudflare) — No —
Movado Group Inc movado.comMOV · Watches, Clocks, Clockwork Operated Devices/Parts (SIC 3873); web address from Wikidata (P856), not EDGAR 47 No 32
North European Oil Royalty Trust no website on recordNRT · Oil Royalty Traders (SIC 6792); no web address found — No —
Eversource Energy eversource.comES · Electric Services (SIC 4911); S&P 500 · Utilities; web address found by crawling for the S&P 500 list, not carried by EDGAR 52 No 29
Xcel Energy Inc xcelenergy.comXEL, XELLL · Electric & Other Services Combined (SIC 4931); S&P 500 · Utilities; web address found by crawling for the S&P 500 list, not carried by EDGAR 46 No 32
Wells Fargo & Company/Mn wellsfargo.comWFC, WFC-PY, WFC-PL · National Commercial Banks (SIC 6021); S&P 500 · Financials; web address found by crawling for the S&P 500 list, not carried by EDGAR 52 Gated 32
Northern Trust Corp northerntrust.comNTRS, NTRSO · State Commercial Banks (SIC 6022); S&P 500 · Financials; web address found by crawling for the S&P 500 list, not carried by EDGAR 33 Gated 1
Biomerica Inc no website on recordBMRA · In Vitro & In Vivo Diagnostic Substances (SIC 2835); no web address found — No —
Nucor Corp nucor.comNUE · Steel Works, Blast Furnaces & Rolling Mills (Coke Ovens) (SIC 3312); S&P 500 · Materials; web address found by crawling for the S&P 500 list, not carried by EDGAR 69 No 32
Oceaneering International Inc oceaneering.comOII · Oil & Gas Field Services, NEC (SIC 1389); web address from Wikidata (P856), not EDGAR 64 No 32
Oil-Dri Corp of America no website on recordODC · Miscellaneous Manufacturing Industries (SIC 3990); no web address found — No —
UDR, Inc. udr.comUDR · Real Estate Investment Trusts (SIC 6798); S&P 500 · Real Estate; web address found by crawling for the S&P 500 list, not carried by EDGAR 52 No 32
Old Republic International Corp oldrepublic.comORI · Surety Insurance (SIC 6351); web address from Wikidata (P856), not EDGAR 59 No 32
OLIN Corp olin.comOLN · Chemicals & Allied Products (SIC 2800); web address from Wikidata (P856), not EDGAR 57 Gated 30
Accendra Health Inc/VA/ owens-minor.comACH · Wholesale-Medical, Dental & Hospital Equipment & Supplies (SIC 5047); web address from Wikidata (P856), not EDGAR 55 Gated 32
Oxford Industries Inc oxfordinc.comOXM · Men's & Boys' Furnishgs, Work Clothg, & Allied Garments (SIC 2320); web address from Wikidata (P856), not EDGAR 49 Gated 32
Paccar Inc paccar.comPCAR · Motor Vehicles & Passenger Car Bodies (SIC 3711); S&P 500 · Industrials; web address found by crawling for the S&P 500 list, not carried by EDGAR 48 No 1
Packaging Corp of America packagingcorp.comPKG · Paperboard Containers & Boxes (SIC 2650); S&P 500 · Materials; web address found by crawling for the S&P 500 list, not carried by EDGAR 59 No 32
Park Aerospace Corp no website on recordPKE · Aircraft Parts & Auxiliary Equipment, NEC (SIC 3728); no web address found — No —
Park Ohio Holdings Corp no website on recordPKOH · Metal Forgings & Stampings (SIC 3460); no web address found — No —
Parker-Hannifin Corp parker.comPH · Miscellaneous Fabricated Metal Products (SIC 3490); S&P 500 · Industrials; web address found by crawling for the S&P 500 list, not carried by EDGAR 28 Gated 1
Patrick Industries Inc no website on recordPATK · Motor Vehicle Parts & Accessories (SIC 3714); no web address found — No —
PENTAIR plc pentair.comPNR · Special Industry Machinery (No Metalworking Machinery) (SIC 3550); S&P 500 · Industrials; web address found by crawling for the S&P 500 list, not carried by EDGAR 61 No 32
Pepsico Inc pepsico.comblockedPEP · Beverages (SIC 2080); S&P 500 · Consumer Staples; web address found by crawling for the S&P 500 list, not carried by EDGAR; not measured: HTTP 403 (Imperva) — No —
Tutor Perini Corp tutorperini.comTPC · General Bldg Contractors - Nonresidential Bldgs (SIC 1540); web address from Wikidata (P856), not EDGAR 38 No 32
Pfizer Inc pfizer.comblockedPFE · Pharmaceutical Preparations (SIC 2834); S&P 500 · Health Care; web address found by crawling for the S&P 500 list, not carried by EDGAR; not measured: HTTP 403 (Cloudflare) — No —
Essential Utilities, Inc. essential.coblockedWTRG · Water Supply (SIC 4941); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 — No —
PLDT Inc. main.pldt.comPHI · Telephone Communications (No Radiotelephone) (SIC 4813); web address from Wikidata (P856), not EDGAR 50 No 1
Pvh Corp. /DE/ pvh.comblockedPVH · Men's & Boys' Furnishgs, Work Clothg, & Allied Garments (SIC 2320); vertical set by hand: a consumer brand that sells direct online; its SIC code is the factory's; web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 (Akamai) — No —

Scores are for the population, not for ranking two named sites against each other. A few points between neighbors is noise. See what these numbers can and cannot support. Data: sites.csv · checks.csv · summary.json