Histometrics

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Industry Primers

Bottom-up NAICS industry primers written for both public-market and private investors. Leaf industries are researched from the ground up; every group, subsector, and sector above them reads as a contrast across the industries beneath it.

2122 industries · 24 sectors · NAICS 2022

Researched with AI assistance from official U.S. statistics and independent sources, with citations on every page. Figures are not individually verified against pinned evidence — primers marked Evidence-verified are. Industry research, not investment advice. Methodology.

GroupNAICS 5192Information

Web Search Portals, Libraries, Archives, and Other Information Services (NAICS 5192)

A Histometrics industry-group primer for public- and private-market investors. NAICS = North American Industry Classification System, the U.S. government's standard scheme for grouping businesses by activity. This is a rollup page — a four-digit industry group that sits above two more-detailed five-digit industries. It synthesizes the two child primers plus our federal ground-truth statistics for this level.

1. Overview

NAICS 5192 is the residual "other information services" bucket of the information sector — the code the government uses for information activities that are neither publishing (5131), broadcasting/streaming (5162), nor computing infrastructure (5182). In practice it bundles two businesses that could hardly be more different: operating the websites that let people search the internet, and running the libraries and archives that collect, preserve, and lend information [1].

For an investor the single most important fact about this level is that it is two economies stapled together by a classification code, not by any shared business logic. One child — web search portals — is one of the most profitable and most concentrated activities in the entire U.S. economy, dominated by a single company and, for the first time in two decades, facing a genuine disruption from artificial intelligence (AI). The other — libraries and archives — is an overwhelmingly public-sector, budget-funded, low-revenue field with no listed pure-play at all. They contribute roughly equal numbers of firms to this level but wildly unequal numbers of dollars. Understanding 5192 is mostly a matter of understanding how lopsided that split is.

2. What's inside — the two child industries and how they differ

NAICS is a nested hierarchy: each four-digit industry group subdivides into five-digit industries. Group 5192 has two children, and they are near-opposites on almost every axis an investor cares about. The contrast — not the aggregate — is the point of this page.

Dimension 51929 — Web Search Portals & All Other Information Services 51921 — Libraries & Archives
What it is Search engines and "answer engines," plus clipping/syndication services and stock-photo agencies [2] Public, academic, school, and special libraries; document and media archives [11]
Share of level revenue ~98% (~$144.3B of ~$147.0B) [3][8] ~2% (~$2.70B) [3][10]
Share of level firms ~33% (1,004 of 3,033) [3][8] ~67% (2,030 of 3,033) [3][10]
Concentration (CR4) ~89.6% — near-monopoly [8] ~27.9% — fragmented [10]
Direction of travel High-revenue-growth (digital ads), but at a structural inflection as AI answers replace clicks [4][6][7] Stable, slow-growth, publicly funded; resilient usage, flat budgets [12][13]
Who owns them One dominant listed giant (Alphabet); Microsoft; two tiny public licensors; the disruptive frontier is private (AI labs) [8][9] Governments and nonprofits — not directly investable; value sits in private vendors and a few listed suppliers [10][14]
How to invest Alphabet, Microsoft (search is a segment); Getty/Shutterstock (pure but tiny); private AI via late-stage venture Vendor equities (RELX, Clarivate, Thomson Reuters, Wiley); municipal bonds; private equity into pure-play vendors [14][16]

The asymmetry is the whole story. Two-thirds of the businesses in this group are libraries-and-archives-adjacent operators, yet they account for less than one revenue dollar in fifty. Almost every dollar — and the group's extreme headline concentration — comes from the search-portal child, and within that child almost every dollar comes from one company. So 5192's aggregate figures are, functionally, Alphabet's search franchise wearing a four-digit disguise.

What the group excludes (each covered in the child primers): book, journal, and software publishers (5131 / 513210); social networks and streaming — Meta, YouTube, Netflix — (516210); and cloud hosting / data processing — Amazon Web Services, Microsoft Azure, Google Cloud — (518210). Only the search-portal slice of a company like Alphabet, and only the library/archive activity itself, are counted here [2][11].

3. Size — this level's rollup figures

The table below is our ingested federal ground truth for the four-digit level, from the U.S. Census Bureau's Economic Census 2022 concentration series. Dollar values are converted from the thousands in which the file reports [3].

Metric (NAICS 5192) Value Source / year
Receipts (revenue) ~$147.0 billion ($147,007,697 thousand) Economic Census, 2022 [3]
Firms 3,033 Economic Census, 2022 [3]
4-firm revenue share (CR4) 87.9% Economic Census, 2022 [3]
8-firm revenue share (CR8) 93.0% Economic Census, 2022 [3]
20-firm revenue share (CR20) 95.8% Economic Census, 2022 [3]
50-firm revenue share (CR50) 97.4% Economic Census, 2022 [3]
Market concentration (HHI) suppressed Economic Census, 2022 [3]

The concentration ratios (CRn = combined revenue share of the n largest firms) confirm the point of Section 2: the four largest firms in this entire information group collect 88 cents of every revenue dollar, and the top 50 collect more than 97 cents. That is not the profile of a competitive industry — it is a monopoly (search) blended with a rounding error (libraries). The Herfindahl-Hirschman Index (HHI, the standard single-number concentration score) is suppressed in the federal file for this level, so no value is stated here; we never publish a suppressed figure [3].

The rollup reconciles almost perfectly to its parts: the two children's receipts (~$144.3B + ~$2.70B) sum to ~$147.0B, and their firm counts (1,004 + 2,030) sum to ~3,034 against the reported 3,033 — a one-firm rounding difference [8][10].

Not carried at this level. Our 5192 ground-truth file holds only the Economic Census concentration series above — receipts, firm count, and CR ratios. It does not carry establishment counts, paid-employee counts, or payroll for the four-digit level, and no growth rate, margin, or capital-expenditure figure; none is invented here. The child primers source headcount separately from County Business Patterns 2023 (roughly 992 establishments / 9,253 employees on the search side, and roughly 2,326 establishments / 25,277 employees / ~$1.06B payroll on the libraries side) [3][15].

Undercount caveat (critical — and it cuts in opposite directions for the two children). The federal business statistics that produce these numbers systematically miss different things on each side:

  • Libraries & archives are undercounted by an order of magnitude on the money. Census business statistics exclude government-operated establishments, most public employees, and the self-employed — and public libraries are specifically an excluded governmental activity. The ~$2.70 billion booked here is only the commercial sliver. The real institutional footprint — public-library operating revenue alone was roughly $14 billion (~86% from local government), plus roughly $8 billion of academic-library spending — pushes the true library economy well past $22 billion a year before school, special, and federal libraries [12][13][15]. That institutional money is the demand that flows to the investable vendors.
  • Web search portals are undercounted on the workforce, not the money. The ~$144 billion of receipts is economically real, but the ~9,000 paid-employee figure is a statistical artifact: the Census assigns each establishment to one industry, so search-advertising revenue books here while the huge workforce that builds and runs search classifies under the parent companies' other establishments [8].

Net: do not size this group's real economic importance from either the receipts figure alone or the headcount alone — both mislead, in opposite directions.

4. Investable universe — where value concentrates across the children

Value concentrates almost entirely on the search-portal side, but not in a way you can own cleanly, and the two children route capital very differently.

  • Search portals (51929) — the money, but bundled. There is no pure-play public search company. The dominant franchise is ownable only inside a diversified giant — Alphabet (tickers GOOGL/GOOG), whose "Google Search & other" revenue was roughly $224.5 billion in 2025 [8] — with a secondary route through Microsoft (MSFT, Bing) [8]. The only pure public plays in this child are two small visual-content licensors, Getty Images (GETY) and Shutterstock (SSTK), each around $1 billion of revenue — a trace of the child's dollars [9]. The consequential disruptors are private: AI answer-engine builders (OpenAI, Anthropic, Perplexity) and privacy challengers (DuckDuckGo, Brave, Ecosia), plus private-equity-owned Yahoo [9].
  • Libraries & archives (51921) — no direct equity at all. No listed company is a library. Public-market exposure comes from the "picks-and-shovels" vendors that sell into library budgets — RELX (Elsevier, LexisNexis), Clarivate (CLVT — ProQuest, Ex Libris), Thomson Reuters (TRI — Westlaw), John Wiley & Sons (WLY), and records-storage-adjacent Iron Mountain (IRM) — plus municipal bonds as the one way a fixed-income investor lends straight to the institutions [14]. The privately held pure-plays (OverDrive, EBSCO, Follett, Cengage/Gale) are reachable only through private equity [14][16].

So the group's investable value is: one mega-cap search franchise (bundled inside Alphabet), a thin ring of listed information-services suppliers that straddle both children (RELX and Thomson Reuters appear on both sides), two micro-cap stock-image names, and a large private frontier — the AI labs on the search side and the library vendors on the libraries side. Full tables, tickers, and ownership detail live in the two child primers.

5. How the money works

Three distinct engines run inside this one code.

  1. Search advertising (the overwhelming majority of the group's dollars). The operator crawls and indexes the web, gives search away free, and auctions user intent to advertisers in real time — priced mostly on cost-per-click (CPC), with placement set by an Ad Rank ≈ bid × Quality Score formula. Near-zero marginal cost per query against huge fixed costs (data centers, indexing) makes incremental ad revenue almost pure margin; the large offset is traffic-acquisition cost (TAC) — payments to be the default search engine on browsers and phones (~$59.9 billion at Alphabet in 2025). Key metrics: query volume, ad load, CPC, click-through rate, and revenue per search [5][8].
  2. Content licensing (small but growing, on the search side). Stock-photo agencies and news syndicators license content per-use or by subscription; a fast-growing new line is AI licensing — deals to license text and images for model training and citation [9].
  3. Institutional budgets and vendor subscriptions (the libraries side). Libraries don't earn profit — a public library's "revenue" is a tax appropriation (~86% local, chiefly property taxes), and the operative metrics are cost-per-use, not margin. The vendors selling into those budgets earn recurring, high-margin subscription income with steep switching costs, plus per-title e-book licenses that expire. The defining tension — flat public budgets versus above-inflation licensing costs — favors the sell-side [13][14].

For an investor, the practical upshot: the group's economics are almost entirely the advertising-auction model, judged on annual recurring revenue, renewal rates, and free cash flow at Alphabet and the information-services suppliers — never benchmarked against the raw federal NAICS receipts figure.

6. Demand drivers

  • Digital-ad budgets — the dominant driver for the whole group, given search's ~98% revenue share; cyclical, running around $294.6 billion in the U.S. in 2025 (up ~13.9%), with search advertising roughly $114 billion of that [4].
  • Purchase intent and e-commerce — search monetizes best on commercial queries (travel, insurance, legal, local).
  • Query volume and usage share — Google holds roughly 87% of U.S. search usage; the whole group's revenue tracks that franchise [6].
  • The AI-answer shift (the swing factor) — a majority of U.S. adults now at least sometimes see AI summaries in search, and AI assistants are taking rising informational-query share; a genuinely new demand source is AI companies needing rights-clean content to license [4][7][9].
  • On the libraries side — local-government fiscal health, enrollment and literacy, the shift to e-book lending, and preservation/digitization of aging records [12][13].

7. Regulation

The two children live under different regulatory regimes, and only one of them is economically consequential to the group's dollars.

  • Search portals — antitrust is the defining event. A U.S. federal court ruled in 2024 that Google unlawfully monopolized general search and search-text advertising; the December 2025 final judgment imposed behavioral remedies — barring certain exclusive default-placement contracts and requiring Google to share search data with qualified competitors via a five-year syndication application programming interface (API) — while declining a structural breakup [5]. Alongside sit a state-led privacy patchwork (anchored by the California Consumer Privacy Act, CCPA), the Children's Online Privacy Protection Act (COPPA), and unsettled copyright-and-AI law shaping the licensing market [9].
  • Libraries & archives — funding and access, not economic regulation. The levers are the Institute of Museum and Library Services (IMLS) and the Library Services and Technology Act (LSTA — the only federal program funding libraries exclusively, ~$160–180 million/year and the subject of a live 2025–26 political fight); copyright's first-sale doctrine and Section 108 (the legal root of the e-book pricing dispute); E-Rate connectivity funding; and web-accessibility rules [14][17].

8. Consolidation

Both children are highly consolidated, for opposite reasons.

  • Search (51929) has been a stable ~90%-one-firm structure for 15-plus years; it survived every prior "Google killer," and the credible threat now is a different product — conversational AI answer engines — rather than another search box. Deal flow runs at the edges: private equity buys and cost-optimizes mature portals (Apollo/Yahoo), and in stock imagery the proposed Getty–Shutterstock merger of equals (announced January 2025) was abandoned in July 2026 after competition review [6][9].
  • Libraries (51921) shows the mirror image: the institutions barely consolidate (they compete for public funding, not customers), but their vendors consolidate steadily — Clarivate's $5.3 billion ProQuest purchase (2021), Francisco Partners' acquisition of Follett (2021), and OverDrive's ~90% grip on library digital lending. Fewer suppliers and expiring licenses steadily raise libraries' input costs — the flip side of what makes the vendors attractive [14].

9. Risks

  • Concentration risk — the group's defining risk. Because ~88% of revenue sits in the four largest firms and nearly all of that is one company, any "5192 exposure" is really a bet on Alphabet's search franchise [3][8].
  • AI disintermediation. If users get answers without clicking, the click-auction economics that generate ~98% of the group's revenue erode — a measurable shift already underway — compounded by AI cost inflation (richer answers need more compute and licensed content) [4][7].
  • Antitrust overhang on the search remedy, and advertising cyclicality [4][5].
  • Copyright and content-rights cost, unsettled by ongoing AI litigation [9].
  • On the libraries side — political and funding risk (the IMLS fight, failed local levies), licensing-cost inflation eroding fixed budgets, and vendor single-supplier dependency [14][17].
  • Measurement risk. Do not size this group from either the ~$147 billion receipts figure (which flatters the libraries side into invisibility and hides the search workforce) or the ~9,000-to-25,000 headcounts; both mislead in opposite directions [3][15].

10. How to invest & outlook

Public markets. The only way to own the franchise that is this group's economics is Alphabet (GOOGL/GOOG), with Microsoft (MSFT) as a bundled secondary — in both, search is a segment, so the valuation reflects the whole company, not search alone. The clean pure-plays are the small-cap image licensors Getty Images (GETY) and Shutterstock (SSTK). Straddling both children, diversified professional-information suppliers — RELX, Thomson Reuters (TRI), Clarivate (CLVT), Wiley (WLY), and records-adjacent Iron Mountain (IRM) — offer exposure to the library-vendor economics; municipal bonds are the one direct, credit-based route to the institutions themselves [8][9][14].

Private markets. The consequential frontier is private: OpenAI, Anthropic, and Perplexity (AI answer engines) and the privacy challengers on the search side, reachable mainly through late-stage venture and pre-IPO secondaries; and the privately held library vendors (OverDrive, EBSCO, Follett), reachable through private equity and private credit [9][14].

Outlook. On paper 5192 is a modest group — ~3,000 firms and a five-figure recorded workforce. In reality it is a ~$147-billion, near-monopoly information-and-advertising machine bolted to a much larger but mostly off-the-books institutional library economy. The base case is evolution, not collapse: search demand looks structurally resilient but its core click-auction mechanism is, for the first time in twenty years, under genuine threat from AI that answers before you click — while the libraries side stays a stable, publicly funded field whose profits accrue to a handful of concentrated, largely private vendors. Two economies, one code, moving to entirely different clocks. For the mechanics, full investable tables, and near-term drivers, read the 51929 primer and the 51921 primer.

Sources

Federal statistics for this four-digit level are from our ground-truth file (U.S. Census Bureau, Economic Census 2022 concentration series for NAICS 5192). All other citations are synthesized from the two child primers, to which the reader is referred for full detail.

  1. U.S. Census Bureau, 2022 NAICS Manual — NAICS 5192 definition and adjacent-industry cross-references, 2022. https://www.census.gov/naics/reference_files_tools/2022_NAICS_Manual.pdf
  2. U.S. Census Bureau, "2022 NAICS Definition: 519290 — Web Search Portals and All Other Information Services," 2022. https://www.census.gov/naics/?details=519290&input=519290&year=2022
  3. U.S. Census Bureau, Economic Census 2022 — Concentration of Largest Firms (NAICS 5192; via Histometrics ingested federal statistics — this level's ground truth). https://www.census.gov/programs-surveys/economic-census.html
  4. Interactive Advertising Bureau (IAB) / PricewaterhouseCoopers (PwC), "Internet Advertising Revenue Report: Full Year 2025" (U.S. digital ad revenue ~$294.6B, +13.9%; search ~$114B), 2026. https://www.iab.com/insights/internet-advertising-revenue-report-full-year-2025/
  5. U.S. Department of Justice / U.S. District Court for the District of Columbia, "United States v. Google LLC" — liability opinion (Aug. 2024) and Final Judgment (Dec. 2025). https://www.justice.gov/atr/media/1421546/dl?inline=
  6. StatCounter Global Stats, "Search Engine Market Share, United States of America," 2026. https://gs.statcounter.com/search-engine-market-share/all/United-States-of-America
  7. Pew Research Center, "Americans Have Mixed Feelings About AI Summaries in Search Results," 2025. https://www.pewresearch.org/short-reads/2025/10/01/americans-have-mixed-feelings-about-ai-summaries-in-search-results/
  8. Alphabet Inc., Form 10-K for fiscal year ended Dec 31, 2025 ("Google Search & other" revenue $224.5B; TAC $59.9B); Microsoft Corporation, "2025 Annual Report" (search & news advertising $13.9B). 2025–2026. https://www.sec.gov/Archives/edgar/data/1652044/000165204426000018/goog-20251231.htm
  9. U.S. SEC, "Getty Images Holdings, Inc. Form 10-K, FY2025" and "Shutterstock, Inc. Form 10-K, FY2025"; UK Competition and Markets Authority, "Getty Images / Shutterstock merger inquiry" (abandoned July 2026); Apollo Global Management, "Apollo Funds Complete Acquisition of Yahoo" (2021). 2021–2026. https://www.sec.gov/Archives/edgar/data/1898496/000162828026018160/gety-20251231.htm
  10. U.S. Census Bureau, Economic Census 2022 — Concentration of Largest Firms (NAICS 51921 / 519210, Libraries and Archives; via Histometrics ingested federal statistics). https://www.census.gov/programs-surveys/economic-census.html
  11. U.S. Census Bureau, 2022 NAICS Manual — NAICS 519210 (Libraries and Archives) definition, 2022. https://www.census.gov/naics/reference_files_tools/2022_NAICS_Manual.pdf
  12. Institute of Museum and Library Services, "Increased Public Library Usage Shown by IMLS Survey Data" (Public Libraries Survey, FY2023), 2025. https://www.imls.gov/research-evaluation/surveys/public-libraries-survey-pls
  13. American Academy of Arts & Sciences, Humanities Indicators, "Public Library Revenue, Expenditures, and Funding Sources," 2021. https://www.amacad.org/humanities-indicators/public-life/public-library-revenue-expenditures-and-funding-sources
  14. Marshall Breeding / American Libraries Magazine, "2024 Library Systems Report," 2024 (OverDrive/KKR, Clarivate/ProQuest, Follett/Francisco Partners; library-vendor and records-storage landscape). https://americanlibrariesmagazine.org/2024/05/01/2024-library-systems-report/
  15. U.S. Census Bureau, County Business Patterns 2023 (NAICS 519290 and 519210; establishment, employment, and payroll counts; coverage limits). https://www.census.gov/programs-surveys/cbp.html
  16. Follett, "Francisco Partners Acquires Follett School Solutions," 2021. https://www.follettlearning.com/press-release/francisco-partners-acquires-follett-school-solutions/
  17. American Library Association, "Court permanently blocks executive order to dismantle federal agency for America's libraries" (IMLS / LSTA funding fight), 2025–2026. https://www.ala.org/news/2025/11/court-permanently-blocks-trumps-executive-order-dismantle-federal-agency-americas