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 401–500 of 5,239 · page 5 of 53

SiteScore GatedPages read Report
New Concept Energy, Inc. no website on recordGBR · Crude Petroleum & Natural Gas (SIC 1311); no web address found — No —
West Pharmaceutical Services Inc westpharma.comWST · Surgical & Medical Instruments & Apparatus (SIC 3841); S&P 500 · Health Care; web address found by crawling for the S&P 500 list, not carried by EDGAR 56 No 32
Western Digital Corp westerndigital.comWDC · Computer Storage Devices (SIC 3572); S&P 500 · Information Technology; web address found by crawling for the S&P 500 list, not carried by EDGAR 62 No 32
Weyco Group Inc no website on recordWEYS · Wholesale-Apparel, Piece Goods & Notions (SIC 5130); no web address found — No —
Weyerhaeuser Co weyerhaeuser.comWY · 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 51 No 32
Whirlpool Corp /DE/ whirlpoolcorp.comWHR, WHR-PA · Household Appliances (SIC 3630); web address from Wikidata (P856), not EDGAR 33 Gated 1
John Wiley & Sons, Inc. wiley.comblockedWLY, WLYB · Books: Publishing or Publishing & Printing (SIC 2731); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 (Cloudflare) — No —
Williams Companies, Inc. williams.comWMB · Natural Gas Transmission (SIC 4922); S&P 500 · Energy; web address found by crawling for the S&P 500 list, not carried by EDGAR 41 No 32
Winnebago Industries Inc winnebagoind.comWGO · Motor Homes (SIC 3716); web address from Wikidata (P856), not EDGAR 61 No 32
Woodward, Inc. woodward.comWWD · Electrical Industrial Apparatus (SIC 3620); web address from Wikidata (P856), not EDGAR 45 No 1
World Acceptance Corp no website on recordWRLD · Personal Credit Institutions (SIC 6141); no web address found — No —
Worthington Enterprises, Inc. worthingtonindustries.comWOR · Steel Works, Blast Furnaces & Rolling & Finishing Mills (SIC 3310); web address from Wikidata (P856), not EDGAR 47 No 2
York Water Co yorkwater.comYORW · Water Supply (SIC 4941); web address from Wikidata (P856), not EDGAR 42 Gated 32
Spectrum Brands Holdings, Inc. hrggroup.comSPB · Miscellaneous Electrical Machinery, Equipment & Supplies (SIC 3690); web address from Wikidata (P856), not EDGAR 50 Gated 1
Tjx Companies Inc /DE/ tjx.comblockedTJX · Retail-Family Clothing Stores (SIC 5651); 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 —
Zions Bancorporation, National Association /UT/ zionsbank.comblockedZION, ZIONP · National Commercial Banks (SIC 6021); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 (Imperva) — No —
Applied Industrial Technologies Inc applied.comblockedAIT · Wholesale-Machinery, Equipment & Supplies (SIC 5080); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 (Cloudflare) — No —
GT Biopharma, Inc. no website on recordGTBP · Pharmaceutical Preparations (SIC 2834); no web address found — No —
Wolverine World Wide Inc /DE/ wolverineworldwide.comWWW · Footwear, (No Rubber) (SIC 3140); web address from Wikidata (P856), not EDGAR 47 Gated 7
Rpm International Inc/DE/ rpminc.comRPM · Paints, Varnishes, Lacquers, Enamels & Allied Prods (SIC 2851); web address from Wikidata (P856), not EDGAR 55 No 32
Johnson & Johnson jnj.comJNJ · Pharmaceutical Preparations (SIC 2834); S&P 500 · Health Care; web address found by crawling for the S&P 500 list, not carried by EDGAR 28 Gated 1
Consumers Energy Co no website on recordCMS-PB · Electric & Other Services Combined (SIC 4931); no web address found — No —
L3Harris Technologies, Inc. /DE/ l3harris.comLHX · Search, Detection, Navigation, Guidance, Aeronautical Sys (SIC 3812); S&P 500 · Industrials; web address found by crawling for the S&P 500 list, not carried by EDGAR 61 No 31
Wesbanco Inc wesbanco.comWSBC, WSBCO · National Commercial Banks (SIC 6021); web address from Wikidata (P856), not EDGAR 66 No 32
Coeur Mining, Inc. coeur.comblockedCDE · Gold and Silver Ores (SIC 1040); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 (Cloudflare) — No —
Haverty Furniture Companies Inc havertys.comblockedHVT, HVT-A · Retail-Furniture Stores (SIC 5712); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 — No —
Itt Inc. itt.comblockedITT · Pumps & Pumping Equipment (SIC 3561); web address from Wikidata (P856), not EDGAR; not measured: challenge page (Imperva) — No —
Textron Inc textron.comTXT · Aircraft & Parts (SIC 3720); S&P 500 · Industrials; web address found by crawling for the S&P 500 list, not carried by EDGAR 40 No 32
Unilever Plc unilever.comblockedUL · Soap, Detergents, Cleang Preparations, Perfumes, Cosmetics (SIC 2840); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 (Akamai) — No —
Selective Insurance Group Inc no website on recordSIGI, SIGIP · Fire, Marine & Casualty Insurance (SIC 6331); no web address found — No —
Natures Sunshine Products Inc naturessunshine.comNATR · Pharmaceutical Preparations (SIC 2834); web address from Wikidata (P856), not EDGAR 42 Gated 4
Parsons Corp parsons.comPSN · Services-Computer Integrated Systems Design (SIC 7373); web address from Wikidata (P856), not EDGAR 56 Gated 32
Pure Cycle Corp no website on recordPCYO · Water Supply (SIC 4941); no web address found — No —
W.w. Grainger, Inc. grainger.comGWW · Wholesale-Durable Goods (SIC 5000); S&P 500 · Industrials; web address found by crawling for the S&P 500 list, not carried by EDGAR 57 No 1
Federal Signal Corp /DE/ federalsignal.comFSS · Motor Vehicles & Passenger Car Bodies (SIC 3711); web address from Wikidata (P856), not EDGAR 63 No 31
Csx Corp csx.comblockedCSX · Railroads, Line-Haul Operating (SIC 4011); 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 —
Cavco Industries, Inc. no website on recordCVCO · Mobile Homes (SIC 2451); no web address found — No —
Sensient Technologies Corp sensient.comSXT · Industrial Organic Chemicals (SIC 2860); web address from Wikidata (P856), not EDGAR 48 Gated 19
Merck & Co., Inc. merck.comMRK · Pharmaceutical Preparations (SIC 2834); S&P 500 · Health Care; web address found by crawling for the S&P 500 list, not carried by EDGAR 60 No 32
Standex International Corp/DE/ standex.comSXI · Refrigeration & Service Industry Machinery (SIC 3580); web address from Wikidata (P856), not EDGAR 61 No 24
Stryker Corp stryker.comSYK · Surgical & Medical Instruments & Apparatus (SIC 3841); S&P 500 · Health Care; web address found by crawling for the S&P 500 list, not carried by EDGAR 54 No 32
Westamerica Bancorporation westamerica.comblockedWABC · National Commercial Banks (SIC 6021); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 (Cloudflare) — No —
Suncor Energy Inc suncor.comblockedSU · Petroleum Refining (SIC 2911); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 (Cloudflare) — No —
Barclays Plc barclays.co.ukBCS · Commercial Banks, NEC (SIC 6029); web address from Wikidata (P856), not EDGAR 28 Gated 1
Barclays Bank Plc no website on recordATMP, DJP, GBUG · Commercial Banks, NEC (SIC 6029); no web address found — No —
Haemonetics Corp haemonetics.comHAE · Surgical & Medical Instruments & Apparatus (SIC 3841); web address from Wikidata (P856), not EDGAR 50 Gated 32
Koninklijke Philips Nv philips.comPHG · X-Ray Apparatus & Tubes & Related Irradiation Apparatus (SIC 3844); web address from Wikidata (P856), not EDGAR 58 No 32
Mesa Royalty Trust/TX no website on recordMTR · Oil Royalty Traders (SIC 6792); no web address found — No —
Danaher Corp /DE/ danaher.comDHR · Industrial Instruments For Measurement, Display, and Control (SIC 3823); S&P 500 · Health Care; web address found by crawling for the S&P 500 list, not carried by EDGAR 60 No 31
Bp Plc bp.comblockedBP · Petroleum Refining (SIC 2911); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 — No —
Sony Group Corp sony.comblockedSONY · Household Audio & Video Equipment (SIC 3651); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 — No —
Church & Dwight Co Inc /DE/ churchdwight.comCHD · Soap, Detergents, Cleang Preparations, Perfumes, Cosmetics (SIC 2840); S&P 500 · Consumer Staples; web address found by crawling for the S&P 500 list, not carried by EDGAR 39 No 9
McEwen Inc. mcewenmining.comblockedMUX · Gold and Silver Ores (SIC 1040); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 (Cloudflare) — No —
TOMI Environmental Solutions, Inc. rpsgroup.comblockedTOMZ · Industrial Organic Chemicals (SIC 2860); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 (CloudFront) — No —
First Busey Corp /Nv/ busey.comBUSE, BUSEP · State Commercial Banks (SIC 6022); web address from Wikidata (P856), not EDGAR 51 No 32
Sasol Ltd sasol.comSSL · Crude Petroleum & Natural Gas (SIC 1311); web address from Wikidata (P856), not EDGAR 50 No 1
Valaris Ltd valaris.comVAL, VAL-WT · Drilling Oil & Gas Wells (SIC 1381); web address from Wikidata (P856), not EDGAR 35 Gated 1
Deere & Co deere.comblockedDE · Farm Machinery & Equipment (SIC 3523); S&P 500 · Industrials; web address found by crawling for the S&P 500 list, not carried by EDGAR; not measured: HTTP 403 (CloudFront) — No —
Robert Half Inc. roberthalf.comblockedRHI · Services-Help Supply Services (SIC 7363); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 (CloudFront) — No —
Aon plc aon.comAON · 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 50 Gated 32
Hurco Companies Inc no website on recordHURC · Industrial Instruments For Measurement, Display, and Control (SIC 3823); no web address found — No —
International Bancshares Corp ibc.comIBOC · State Commercial Banks (SIC 6022); web address from Wikidata (P856), not EDGAR 58 Gated 32
Range Resources Corp rangeresources.comRRC · Crude Petroleum & Natural Gas (SIC 1311); web address from Wikidata (P856), not EDGAR 68 No 32
Schwab Charles Corp schwab.comSCHW, SCHW-PD, SCHW-PJ · Security Brokers, Dealers & Flotation Companies (SIC 6211); S&P 500 · Financials; web address found by crawling for the S&P 500 list, not carried by EDGAR 54 No 1
Avino Silver & Gold Mines Ltd no website on recordASM · Metal Mining (SIC 1000); no web address found — No —
Coca-Cola Consolidated, Inc. no website on recordCOKE · Bottled & Canned Soft Drinks & Carbonated Waters (SIC 2086); no web address found — No —
Digital Turbine, Inc. digitalturbine.comAPPS · Patent Owners & Lessors (SIC 6794); web address from Wikidata (P856), not EDGAR 64 No 32
Amgen Inc amgen.comAMGN · Biological Products, (No Diagnostic Substances) (SIC 2836); S&P 500 · Health Care; web address found by crawling for the S&P 500 list, not carried by EDGAR 48 No 1
Peoples Bancorp Inc no website on recordPEBO · State Commercial Banks (SIC 6022); no web address found — No —
Abeona Therapeutics Inc. no website on recordABEO · Pharmaceutical Preparations (SIC 2834); no web address found — No —
Security National Financial Corp no website on recordSNFCA · Finance Services (SIC 6199); no web address found — No —
Team Inc no website on recordTISI · Services-Miscellaneous Repair Services (SIC 7600); no web address found — No —
Kla Corp kla.comKLAC · Optical Instruments & Lenses (SIC 3827); S&P 500 · Information Technology; web address found by crawling for the S&P 500 list, not carried by EDGAR 52 Gated 32
Permian Basin Royalty Trust pbt-permianbasintrust.comPBT · Oil Royalty Traders (SIC 6792); web address from Wikidata (P856), not EDGAR 75 No 32
San Juan Basin Royalty Trust no website on recordSJT · Oil Royalty Traders (SIC 6792); no web address found — No —
Lisata Therapeutics, Inc. caladrius.comLSTA · Pharmaceutical Preparations (SIC 2834); web address from Wikidata (P856), not EDGAR 52 No 1
Telos Corp telos.comTLS · Services-Computer Integrated Systems Design (SIC 7373); web address from Wikidata (P856), not EDGAR 63 No 32
NIKE, Inc. nike.comNKE · Rubber & Plastics Footwear (SIC 3021); S&P 500 · Consumer Discretionary; vertical set by hand: a consumer brand that sells direct online; its SIC code is the factory's; web address found by crawling for the S&P 500 list, not carried by EDGAR 40 Gated 32
Apple Inc. apple.comAAPL · Electronic Computers (SIC 3571); S&P 500 · Information Technology; vertical set by hand: a consumer brand that sells direct online; its SIC code is the factory's; web address found by crawling for the S&P 500 list, not carried by EDGAR 49 No 32
Globe Life Inc. torchmarkcorp.comGL, GL-PD · Life Insurance (SIC 6311); S&P 500 · Financials; web address found by crawling for the S&P 500 list, not carried by EDGAR 46 No 32
Autonation, Inc. autonation.comblockedAN · Retail-Auto Dealers & Gasoline Stations (SIC 5500); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 — No —
Community Trust Bancorp Inc /Ky/ no website on recordCTBI · State Commercial Banks (SIC 6022); no web address found — No —
Sei Investments Co seic.comSEIC · Security Brokers, Dealers & Flotation Companies (SIC 6211); web address from Wikidata (P856), not EDGAR 48 No 32
Ameris Bancorp ir.amerisbank.comblockedABCB · State Commercial Banks (SIC 6022); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 (Cloudflare) — No —
Data I/O Corp dataio.comDAIO · Instruments For Meas & Testing of Electricity & Elec Signals (SIC 3825); web address from Wikidata (P856), not EDGAR 70 No 32
Alliant Energy Corp alliantenergy.comLNT · 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 66 No 32
Foster L B Co no website on recordFSTR · Wholesale-Metals Service Centers & of fices (SIC 5051); no web address found — No —
Universal Health Services Inc uhsinc.comblockedUHS · Services-General Medical & Surgical Hospitals, NEC (SIC 8062); 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 —
Ckx Lands, Inc. no website on recordCKX · Crude Petroleum & Natural Gas (SIC 1311); no web address found — No —
Air T Inc no website on recordAIRT, AIRTP · Air Courier Services (SIC 4513); no web address found — No —
Novo Nordisk a S novonordisk.comNVO · Pharmaceutical Preparations (SIC 2834); web address from Wikidata (P856), not EDGAR 61 No 32
Arthur J. Gallagher & Co. ajg.comAJG · 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 41 No 1
Cvb Financial Corp no website on recordCVBF · State Commercial Banks (SIC 6022); no web address found — No —
Hawaiian Electric Industries Inc hawaiianelectric.comHE · Electric Services (SIC 4911); web address from Wikidata (P856), not EDGAR 52 Gated 32
Home Depot, Inc. homedepot.comblockedHD · 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; not measured: HTTP 403 (Akamai) — No —
Shenandoah Telecommunications Co/VA/ no website on recordSHEN · Telephone Communications (No Radiotelephone) (SIC 4813); no web address found — No —
Gentex Corp gentex.comGNTX · Motor Vehicle Parts & Accessories (SIC 3714); web address from Wikidata (P856), not EDGAR 52 No 24
Richardson Electronics, Ltd. no website on recordRELL · Wholesale-Electronic Parts & Equipment, NEC (SIC 5065); no web address found — No —
Csp Inc /Ma/ no website on recordCSPI · Services-Computer Integrated Systems Design (SIC 7373); no web address found — No —
Trico Bancshares / no website on recordTCBK · State Commercial Banks (SIC 6022); no web address found — 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