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 1–100 of 5,239 · page 1 of 53

SiteScore GatedPages read Report
Aar Corp aarcorp.comAIR · Aircraft & Parts (SIC 3720); web address from Wikidata (P856), not EDGAR 70 No 32
Abbott Laboratories abbott.comABT · Pharmaceutical Preparations (SIC 2834); S&P 500 · Health Care; web address found by crawling for the S&P 500 list, not carried by EDGAR 62 No 32
Acme United Corp acmeunited.comblockedACU · Cutlery, Handtools & General Hardware (SIC 3420); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 — No —
BK Technologies Corp no website on recordBKTI · Radio & Tv Broadcasting & Communications Equipment (SIC 3663); no web address found — No —
Advanced Micro Devices Inc amd.comAMD · Semiconductors & Related Devices (SIC 3674); S&P 500 · Information Technology; web address found by crawling for the S&P 500 list, not carried by EDGAR 33 Gated 1
Agnico Eagle Mines Ltd agnico-eagle.comblockedAEM · Gold and Silver Ores (SIC 1040); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 (Cloudflare) — No —
Air Products & Chemicals, Inc. airproducts.comblockedAPD · Industrial Inorganic Chemicals (SIC 2810); S&P 500 · Materials; web address found by crawling for the S&P 500 list, not carried by EDGAR; not measured: HTTP 403 — No —
Ceco Environmental Corp no website on recordCECO · Industrial & Commercial Fans & Blowers & Air Purifing Equip (SIC 3564); no web address found — No —
Matson, Inc. matson.comblockedMATX · Water Transportation (SIC 4400); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 — No —
Alexanders Inc alx-inc.comblockedALX · Real Estate Investment Trusts (SIC 6798); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 (Cloudflare) — No —
Alico, Inc. alicoinc.comALCO · Lessors of Real Property, NEC (SIC 6519); web address from Wikidata (P856), not EDGAR 48 Gated 32
Cheniere Energy, Inc. cheniere.comLNG · Natural Gas Distribution (SIC 4924); web address from Wikidata (P856), not EDGAR 59 No 32
Skyworks Solutions, Inc. skyworksinc.comSWKS · Semiconductors & Related Devices (SIC 3674); S&P 500 · Information Technology; web address found by crawling for the S&P 500 list, not carried by EDGAR 55 No 32
Howmet Aerospace Inc. howmet.comHWM · Rolling Drawing & Extruding of Nonferrous Metals (SIC 3350); S&P 500 · Industrials; web address found by crawling for the S&P 500 list, not carried by EDGAR 57 Gated 32
U-Haul Holding Co /NV/ amerco.comblockedUHAL, UHAL-B · Services-Auto Rental & Leasing (No Drivers) (SIC 7510); web address from Wikidata (P856), not EDGAR; not measured: HTTP 429 (Cloudflare) — No —
American Electric Power Co Inc aep.comAEP · Electric Services (SIC 4911); S&P 500 · Utilities; web address found by crawling for the S&P 500 list, not carried by EDGAR 58 No 32
American Express Co americanexpress.chAXP · Finance Services (SIC 6199); S&P 500 · Financials; web address found by crawling for the S&P 500 list, not carried by EDGAR 64 No 32
Aflac Inc aflac.comAFL · Accident & Health Insurance (SIC 6321); S&P 500 · Financials; web address found by crawling for the S&P 500 list, not carried by EDGAR 48 No 1
American International Group, Inc. aig.comAIG · 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 63 No 32
Unum Group unum.comUNM, UNMA · Accident & Health Insurance (SIC 6321); web address from Wikidata (P856), not EDGAR 47 No 32
American Vanguard Corp no website on recordAVD · Agricultural Chemicals (SIC 2870); no web address found — No —
Ampco Pittsburgh Corp ampcopgh.comAP · Pumps & Pumping Equipment (SIC 3561); web address from Wikidata (P856), not EDGAR 46 No 32
American Airlines Group Inc. aa.comblockedAAL · Air Transportation, Scheduled (SIC 4512); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 — No —
Amrep Corp. amrepcorp.comAXR · Land Subdividers & Developers (No Cemeteries) (SIC 6552); web address from Wikidata (P856), not EDGAR 63 No 5
Analog Devices Inc analog.comADI · Semiconductors & Related Devices (SIC 3674); S&P 500 · Information Technology; web address found by crawling for the S&P 500 list, not carried by EDGAR 28 Gated 1
Apogee Enterprises, Inc. no website on recordAPOG · Glass Products, Made of Purchased Glass (SIC 3231); no web address found — No —
Applied Materials Inc /DE appliedmaterials.comAMAT · Semiconductors & Related Devices (SIC 3674); S&P 500 · Information Technology; web address found by crawling for the S&P 500 list, not carried by EDGAR 28 Gated 1
Enerpac Tool Group Corp no website on recordEPAC · Misc Industrial & Commercial Machinery & Equipment (SIC 3590); no web address found — No —
Archer-Daniels-Midland Co adm.comADM · Fats & Oils (SIC 2070); S&P 500 · Consumer Staples; web address found by crawling for the S&P 500 list, not carried by EDGAR 61 No 31
Entergy Arkansas, LLC no website on recordEAI · Electric Services (SIC 4911); no web address found — No —
Armstrong World Industries Inc armstrongceilings.comAWI · Plastics Products, NEC (SIC 3089); web address from Wikidata (P856), not EDGAR 42 Gated 32
Arrow Electronics, Inc. arrow.comARW · Wholesale-Electronic Parts & Equipment, NEC (SIC 5065); web address from Wikidata (P856), not EDGAR 35 Gated 1
Arts Way Manufacturing Co Inc no website on recordARTW · Farm Machinery & Equipment (SIC 3523); no web address found — No —
Associated Banc-Corp associatedbank.comASB, ASBA, ASB-PE · State Commercial Banks (SIC 6022); web address from Wikidata (P856), not EDGAR 63 No 1
Astronics Corp astronics.comATRO · Aircraft Parts & Auxiliary Equipment, NEC (SIC 3728); web address from Wikidata (P856), not EDGAR 60 No 32
Atlantic American Corp no website on recordAAME · Life Insurance (SIC 6311); no web address found — No —
AgEagle Aerial Systems Inc. no website on recordUAVS · Aircraft (SIC 3721); no web address found — No —
Automatic Data Processing Inc adp.comADP · Services-Computer Processing & Data Preparation (SIC 7374); S&P 500 · Industrials; web address found by crawling for the S&P 500 list, not carried by EDGAR 60 Gated 32
Avery Dennison Corp averydennison.comAVY · Converted Paper & Paperboard Prods (No Contaners/Boxes) (SIC 2670); S&P 500 · Materials; web address found by crawling for the S&P 500 list, not carried by EDGAR 49 No 32
Avnet Inc avnet.comblockedAVT · Wholesale-Electronic Parts & Equipment, NEC (SIC 5065); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 (Akamai) — No —
Azz Inc no website on recordAZZ · Coating, Engraving & Allied Services (SIC 3470); no web address found — No —
Badger Meter Inc no website on recordBMI · Totalizing Fluid Meters & Counting Devices (SIC 3824); no web address found — No —
Balchem Corp no website on recordBCPC · Chemicals & Allied Products (SIC 2800); no web address found — No —
BALL Corp ball.comblockedBALL · Metal Cans (SIC 3411); S&P 500 · Materials; web address found by crawling for the S&P 500 list, not carried by EDGAR; not measured: HTTP 403 — No —
Bank of Nova Scotia scotiabank.comBNS · State Commercial Banks (SIC 6022); web address from Wikidata (P856), not EDGAR 62 No 32
Barnwell Industries Inc no website on recordBRN · Crude Petroleum & Natural Gas (SIC 1311); no web address found — No —
Bassett Furniture Industries Inc bassettfurniture.comBSET · Wood Household Furniture, (No Upholstered) (SIC 2511); web address from Wikidata (P856), not EDGAR 67 No 32
Baxter International Inc baxter.comBAX · 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 59 No 32
Becton Dickinson & Co bdbiosciences.comBDX · 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 55 Gated 32
Berkley W R Corp wrberkley.comWRB, WRB-PE, WRB-PF · 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 64 No 1
Flanigans Enterprises Inc no website on recordBDL · Retail-Eating Places (SIC 5812); no web address found — No —
Bio-Rad Laboratories, Inc. bio-rad.comblockedBIO, BIO-B · Laboratory Analytical Instruments (SIC 3826); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 (Akamai) — No —
Dominari Holdings Inc. no website on recordDOMH · Security Brokers, Dealers & Flotation Companies (SIC 6211); no web address found — No —
H&r Block Inc hrblock.comblockedHRB · Services-Personal Services (SIC 7200); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 — No —
Boeing Co boeing.comBA, BA-PA · Aircraft (SIC 3721); S&P 500 · Industrials; web address found by crawling for the S&P 500 list, not carried by EDGAR 53 No 32
Bridgford Foods Corp no website on recordBRID · Sausages & Other Prepared Meat Products (SIC 2013); no web address found — No —
Bristol Myers Squibb Co bms.comBMY, CELG-RI · Pharmaceutical Preparations (SIC 2834); S&P 500 · Health Care; web address found by crawling for the S&P 500 list, not carried by EDGAR 57 No 32
Brown Forman Corp brown-forman.comBF-B, BF-A · Beverages (SIC 2080); S&P 500 · Consumer Staples; web address found by crawling for the S&P 500 list, not carried by EDGAR 43 No 20
Caleres Inc famousfootwear.comblockedCAL · Footwear, (No Rubber) (SIC 3140); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 — No —
BRT Apartments Corp. no website on recordBRT · Real Estate Investment Trusts (SIC 6798); no web address found — No —
Brunswick Corp brunswick.comBC, BC-PC · Engines & Turbines (SIC 3510); web address from Wikidata (P856), not EDGAR 64 No 32
Mastec Inc mastec.comMTZ · Water, Sewer, Pipeline, Comm & Power Line Construction (SIC 1623); web address from Wikidata (P856), not EDGAR 45 No 30
Cabot Corp cabot-corp.comCBT · Miscellaneous Chemical Products (SIC 2890); web address from Wikidata (P856), not EDGAR 33 Gated 1
Caci International Inc /DE/ caci.comCACI · Services-Computer Integrated Systems Design (SIC 7373); web address from Wikidata (P856), not EDGAR 46 Gated 32
Cal-Maine Foods Inc calmainefoods.comCALM · Agricultural Prod-Livestock & Animal Specialties (SIC 0200); web address from Wikidata (P856), not EDGAR 70 No 32
CAMPBELL'S Co campbells.comCPB · Food and Kindred Products (SIC 2000); web address from Wikidata (P856), not EDGAR 55 Gated 32
Scully Royalty Ltd. no website on recordSRL · Mineral Royalty Traders (SIC 6795); no web address found — No —
Canadian National Railway Co cn.caCNI · Railroads, Line-Haul Operating (SIC 4011); web address from Wikidata (P856), not EDGAR 57 No 1
Canadian Pacific Kansas City Ltd/Cn cpkcr.comCP · Railroads, Line-Haul Operating (SIC 4011); web address from Wikidata (P856), not EDGAR 46 Gated 32
Constellation Brands, Inc. cbrands.comSTZ · Beverages (SIC 2080); S&P 500 · Consumer Staples; web address found by crawling for the S&P 500 list, not carried by EDGAR 60 Gated 32
Carpenter Technology Corp cartech.comCRS · Steel Works, Blast Furnaces & Rolling Mills (Coke Ovens) (SIC 3312); web address from Wikidata (P856), not EDGAR 62 No 1
Caterpillar Inc caterpillar.comCAT · Construction Machinery & Equip (SIC 3531); S&P 500 · Industrials; web address found by crawling for the S&P 500 list, not carried by EDGAR 33 Gated 1
Cato Corp catofashions.comblockedCATO · Retail-Women's Clothing Stores (SIC 5621); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 (Cloudflare) — No —
Genesco Inc genesco.comblockedGCO · Retail-Shoe Stores (SIC 5661); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 — No —
Lumen Technologies, Inc. lumen.comLUMN · Telephone Communications (No Radiotelephone) (SIC 4813); web address from Wikidata (P856), not EDGAR 61 No 32
Chemed Corp chemed.comblockedCHE · Services-Home Health Care Services (SIC 8082); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 — No —
Jpmorgan Chase & Co jpmorganchase.comJPM, JPM-PC, AMJB · National Commercial Banks (SIC 6021); S&P 500 · Financials; web address found by crawling for the S&P 500 list, not carried by EDGAR 69 No 32
Chesapeake Utilities Corp no website on recordCPK · Natural Gas Transmisison & Distribution (SIC 4923); no web address found — No —
Chicago Rivet & Machine Co no website on recordCVR · Metalworkg Machinery & Equipment (SIC 3540); no web address found — No —
Churchill Downs Inc churchilldownsincorporated.comCHDN · Services-Racing, Including Track Operation (SIC 7948); web address from Wikidata (P856), not EDGAR 48 Gated 32
Cincinnati Financial Corp cinfin.comblockedCINF · 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 — No —
Clorox Co /DE/ thecloroxcompany.comCLX · Specialty Cleaning, Polishing and Sanitation Preparations (SIC 2842); S&P 500 · Consumer Staples; web address found by crawling for the S&P 500 list, not carried by EDGAR 60 No 32
Cna Financial Corp cna.comCNA · Fire, Marine & Casualty Insurance (SIC 6331); web address from Wikidata (P856), not EDGAR 33 Gated 1
Coca Cola Co coca-colacompany.comKO · Beverages (SIC 2080); S&P 500 · Consumer Staples; web address found by crawling for the S&P 500 list, not carried by EDGAR 53 No 32
Cohu Inc no website on recordCOHU · Instruments For Meas & Testing of Electricity & Elec Signals (SIC 3825); no web address found — No —
Colgate Palmolive Co colgatepalmolive.comCL · Perfumes, Cosmetics & Other Toilet Preparations (SIC 2844); S&P 500 · Consumer Staples; web address found by crawling for the S&P 500 list, not carried by EDGAR 67 No 32
Commerce Bancshares Inc /Mo/ commercebank.comCBSH · State Commercial Banks (SIC 6022); web address from Wikidata (P856), not EDGAR 67 No 32
COMMERCIAL METALS Co no website on recordCMC · Steel Works, Blast Furnaces & Rolling Mills (Coke Ovens) (SIC 3312); no web address found — No —
SUNation Energy, Inc. no website on recordSUNE · Construction - Special Trade Contractors (SIC 1700); no web address found — No —
Comstock Resources Inc no website on recordCRK · Crude Petroleum & Natural Gas (SIC 1311); no web address found — No —
Comtech Telecommunications Corp /DE/ comtech.comCMTL · Radio & Tv Broadcasting & Communications Equipment (SIC 3663); web address from Wikidata (P856), not EDGAR 66 No 32
Conagra Brands Inc. conagrabrands.comblockedCAG · Food and Kindred Products (SIC 2000); web address from Wikidata (P856), not EDGAR; not measured: HTTP 403 (Cloudflare) — No —
CTO Realty Growth, Inc. no website on recordCTO, CTO-PA · Real Estate Investment Trusts (SIC 6798); no web address found — No —
Citizens, Inc. no website on recordCIA · Life Insurance (SIC 6311); no web address found — No —
Molson Coors Beverage Co molsoncoors.comblockedTAP, TAP-A · Malt Beverages (SIC 2082); 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 —
Corning Inc /NY corning.comblockedGLW · Drawing & Insulating of Nonferrous Wire (SIC 3357); S&P 500 · Information Technology; web address found by crawling for the S&P 500 list, not carried by EDGAR; not measured: HTTP 403 (Akamai) — No —
Cousins Properties Inc cousinsproperties.comCUZ · Real Estate Investment Trusts (SIC 6798); web address from Wikidata (P856), not EDGAR 45 No 1
Crane NXT, Co. no website on recordCXT · Miscellaneous Fabricated Metal Products (SIC 3490); no web address found — No —
Crawford & Co no website on recordCRD-A, CRD-B · Insurance Agents, Brokers & Service (SIC 6411); no web address found — No —
TherapeuticsMD, Inc. no website on recordTXMD · Pharmaceutical Preparations (SIC 2834); 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