{"license":"https://creativecommons.org/licenses/by/4.0/","dataset":"definitions","count":12,"rows":[{"id":"def-wireless","marketId":"mkt-wireless","productBoundary":"Commercial mobile wireless service represented in FCC competition reporting","geographicBoundary":"FCC economic areas summarized as a weighted national concentration measure","measurementBasis":"FCC source-reported HHI by economic area","denominator":"The service and provider universe used in the FCC mobile wireless concentration screen","included":"Provider concentration captured by the FCC-reported economic-area HHI","excluded":"A national carrier-share table is not reconstructed from the reported HHI","metricFamily":"agency_reported_hhi","definitionStatus":"agency_defined","crossMarketUse":"screen_only","timeSeriesUse":"comparable_anchors","sourceId":"fcc-2024-cmr","dataYear":2023,"confidenceLevel":"high","methodologyNote":"Use the FCC source-reported weighted average HHI and preserve the economic-area basis.","limitations":"The published national signal is an aggregate of geographic market screens rather than an HHI computed from a public national carrier-share table.","marketSlug":"us-mobile-wireless-service","marketName":"U.S. mobile wireless service","marketShortName":"Wireless service","sector":"Telecommunications","geography":"United States","marketNaicsCode":"517112","industryHref":"/industries/517112","crosswalkHref":"/markets/economy?bridgeMarket=us-mobile-wireless-service&bridgeNaics=517112#market-industry-crosswalk","sourceTitle":"2024 Communications Marketplace Report","sourcePublisher":"Federal Communications Commission","sourceUrl":"https://docs.fcc.gov/public/attachments/FCC-24-136A1.pdf","sourceAccessDate":"2026-05-16","sourceProfileHref":"/sources/fcc-2024-cmr"},{"id":"def-fixed-broadband","marketId":"mkt-fixed-broadband","productBoundary":"Residential fixed internet connections with at least 100 Mbps downstream and 20 Mbps upstream","geographicBoundary":"United States for the canonical market-profile series; separately calculated state, county, and census-tract HHIs are retained as geographic summaries","measurementBasis":"FCC source-reported provider-share HHI for qualifying residential fixed connections","denominator":"Reported residential fixed connections meeting the 100/20 Mbps threshold in each FCC geographic calculation","included":"The annual December national HHI anchors and an exact route to the full four-scope semiannual FCC series","excluded":"Provider identities and shares, areas without a qualifying connection, slower service tiers, mobile broadband, enterprise service, and any claim that a geographic median is a legal market","metricFamily":"agency_reported_hhi","definitionStatus":"agency_defined","crossMarketUse":"screen_only","timeSeriesUse":"comparable_anchors","sourceId":"fcc-internet-access-dec-2024","dataYear":2024,"confidenceLevel":"high","methodologyNote":"Publish only the December national HHI rows as market-profile anchors and preserve all four geographic summaries in the linked FCC resolution ladder.","limitations":"The national HHI and medians of separately calculated state, county, and census-tract HHIs describe different geographic summaries. The source does not publish provider shares in this release, and none of these rows by itself establishes a legal product or geographic market.","marketSlug":"us-fixed-broadband-access","marketName":"U.S. residential fixed broadband access","marketShortName":"Fixed broadband","sector":"Telecommunications","geography":"United States / separately reported state, county, and census-tract summaries","marketNaicsCode":"517111","industryHref":"/industries/517111","crosswalkHref":"/markets/economy?bridgeMarket=us-fixed-broadband-access&bridgeNaics=517111#market-industry-crosswalk","sourceTitle":"Internet Access Services: Status as of December 31 2024","sourcePublisher":"Federal Communications Commission","sourceUrl":"https://docs.fcc.gov/public/attachments/DOC-418459A1.pdf","sourceAccessDate":"2026-07-21","sourceProfileHref":"/sources/fcc-internet-access-dec-2024"},{"id":"def-airlines","marketId":"mkt-airlines","productBoundary":"Domestic scheduled airline passenger traffic","geographicBoundary":"United States domestic itineraries","measurementBasis":"Carrier share of domestic scheduled passengers","denominator":"Passengers reported in the BTS domestic market-share table for the 12 months ending February 2026","included":"Named carriers and the published aggregate Other category","excluded":"Individual carriers inside Other are not separately identified","metricFamily":"passenger_shares","definitionStatus":"agency_defined","crossMarketUse":"not_comparable","timeSeriesUse":"snapshot_only","sourceId":"bts-transtats-2026","dataYear":2026,"confidenceLevel":"high","methodologyNote":"Use sourced carrier passenger shares for top-firm and CR4 screens; withhold HHI while Other remains aggregated.","limitations":"The aggregate Other row prevents a complete firm-level distribution and therefore prevents a publishable HHI.","marketSlug":"us-airline-domestic-passengers","marketName":"U.S. domestic airline passengers","marketShortName":"Domestic airlines","sector":"Transportation","geography":"United States","marketNaicsCode":"481111","industryHref":"/industries/481111","crosswalkHref":"/markets/economy?bridgeMarket=us-airline-domestic-passengers&bridgeNaics=481111#market-industry-crosswalk","sourceTitle":"TranStats airline domestic market share March 2025-February 2026","sourcePublisher":"Bureau of Transportation Statistics","sourceUrl":"https://transtats.bts.gov/Homepage.asp","sourceAccessDate":"2026-05-16","sourceProfileHref":"/sources/bts-transtats-2026"},{"id":"def-housing","marketId":"mkt-housing","productBoundary":"Rental housing access with affordability, supply, and selected institutional single-family rental ownership evidence","geographicBoundary":"National affordability and supply indicators plus selected local ownership evidence","measurementBasis":"Mixed public indicators rather than one firm-share distribution","denominator":"The relevant population or housing stock differs by source and is not combined into a single market denominator","included":"Cost-burdened renter households, housing supply shortfall evidence, and selected local ownership findings","excluded":"Comparable firm-level shares for consistently defined local rental markets","metricFamily":"access_indicators","definitionStatus":"mixed_scope","crossMarketUse":"not_comparable","timeSeriesUse":"not_available","sourceId":"jchs-rental-housing-2026","dataYear":2024,"confidenceLevel":"medium","methodologyNote":"Keep national access indicators separate from local competition evidence and do not compute a national rental housing HHI.","limitations":"Rental housing competition is local, while the current public records use different populations, geographies, and units of analysis.","marketSlug":"us-rental-housing-access","marketName":"U.S. rental housing access","marketShortName":"Rental housing","sector":"Real estate","geography":"United States / local housing markets","marketNaicsCode":"531110","industryHref":"/industries/531110","crosswalkHref":"/markets/economy?bridgeMarket=us-rental-housing-access&bridgeNaics=531110#market-industry-crosswalk","sourceTitle":"America's Rental Housing 2026","sourcePublisher":"Harvard Joint Center for Housing Studies","sourceUrl":"https://www.jchs.harvard.edu/press-releases/new-report-finds-cooling-rental-markets-affordability-crisis-deepens-renters","sourceAccessDate":"2026-06-21","sourceProfileHref":"/sources/jchs-rental-housing-2026"},{"id":"def-search","marketId":"mkt-search","productBoundary":"All-platform search engine usage","geographicBoundary":"United States","measurementBasis":"StatCounter search engine referral usage share","denominator":"Observed U.S. search engine usage in each reported monthly snapshot","included":"Named search engines and a residual Other category that closes the public share table to 100 percent","excluded":"Search query volume, search advertising revenue, and other digital advertising activity","metricFamily":"usage_shares","definitionStatus":"public_proxy","crossMarketUse":"screen_only","timeSeriesUse":"comparable_anchors","sourceId":"statcounter-search-us-2026","dataYear":2026,"confidenceLevel":"medium","methodologyNote":"Compute HHI from the same StatCounter all-platform U.S. usage-share series and retain the residual Other category.","limitations":"Usage share is a web-analytics proxy and should not be presented as search-query share or search-advertising revenue share.","marketSlug":"us-search-engine-usage","marketName":"U.S. search engine usage","marketShortName":"Search engines","sector":"Digital platforms","geography":"United States","marketNaicsCode":"518210","industryHref":"/industries/518210","crosswalkHref":"/markets/economy?bridgeMarket=us-search-engine-usage&bridgeNaics=518210#market-industry-crosswalk","sourceTitle":"Search engine market share in United States of America, April 2023-April 2026","sourcePublisher":"StatCounter Global Stats","sourceUrl":"https://gs.statcounter.com/chart.php?device=Desktop%20%26%20Mobile%20%26%20Tablet%20%26%20Console&device_hidden=desktop%2Bmobile%2Btablet%2Bconsole&multi-device=true&statType_hidden=search_engine&region_hidden=US&granularity=monthly&statType=Search%20Engine&region=United%20States%20of%20America&fromInt=202304&toInt=202604&fromMonthYear=2023-04&toMonthYear=2026-04&csv=1","sourceAccessDate":"2026-07-17","sourceProfileHref":"/sources/statcounter-search-us-2026"},{"id":"def-browser","marketId":"mkt-browser","productBoundary":"All-platform browser usage","geographicBoundary":"United States","measurementBasis":"StatCounter browser page-view usage share","denominator":"Observed U.S. browser usage in each reported monthly snapshot","included":"Named browsers and a residual Other category that closes the public share table to 100 percent","excluded":"Unique browser users, browser revenue, operating-system share, and tying conduct","metricFamily":"usage_shares","definitionStatus":"public_proxy","crossMarketUse":"screen_only","timeSeriesUse":"comparable_anchors","sourceId":"statcounter-browser-us-2026","dataYear":2026,"confidenceLevel":"medium","methodologyNote":"Compute HHI from the same StatCounter all-platform U.S. browser usage-share series and retain the residual Other category.","limitations":"Page-view usage is a public web-analytics proxy rather than a count of browser users or a revenue measure.","marketSlug":"us-browser-usage","marketName":"U.S. browser usage","marketShortName":"Browsers","sector":"Software","geography":"United States","marketNaicsCode":"513210","industryHref":"/industries/513210","crosswalkHref":"/markets/economy?bridgeMarket=us-browser-usage&bridgeNaics=513210#market-industry-crosswalk","sourceTitle":"Browser market share in United States of America, April 2023-April 2026","sourcePublisher":"StatCounter Global Stats","sourceUrl":"https://gs.statcounter.com/chart.php?device=Desktop%20%26%20Mobile%20%26%20Tablet%20%26%20Console&device_hidden=desktop%2Bmobile%2Btablet%2Bconsole&multi-device=true&statType_hidden=browser&region_hidden=US&granularity=monthly&statType=Browser&region=United%20States%20of%20America&fromInt=202304&toInt=202604&fromMonthYear=2023-04&toMonthYear=2026-04&csv=1","sourceAccessDate":"2026-07-17","sourceProfileHref":"/sources/statcounter-browser-us-2026"},{"id":"def-pbm","marketId":"mkt-pbm","productBoundary":"Pharmacy benefit management services represented by prescription processing","geographicBoundary":"United States","measurementBasis":"FTC-reported aggregate shares of prescriptions processed","denominator":"U.S. prescriptions processed by the PBMs covered in the FTC public findings","included":"Top-three and top-six aggregate concentration facts","excluded":"Individual PBM shares sufficient to construct a complete firm distribution","metricFamily":"aggregate_concentration","definitionStatus":"agency_defined","crossMarketUse":"not_comparable","timeSeriesUse":"snapshot_only","sourceId":"ftc-pbm-interim-2024","dataYear":2023,"confidenceLevel":"high","methodologyNote":"Publish the FTC aggregate concentration facts and withhold HHI until individual citable PBM shares are available.","limitations":"Top-three and top-six aggregates do not identify the individual firm shares needed to calculate HHI.","marketSlug":"us-pharmacy-benefit-management","marketName":"U.S. pharmacy benefit management","marketShortName":"PBMs","sector":"Health care","geography":"United States","marketNaicsCode":"524292","industryHref":"/industries/524292","crosswalkHref":"/markets/economy?bridgeMarket=us-pharmacy-benefit-management&bridgeNaics=524292#market-industry-crosswalk","sourceTitle":"Pharmacy Benefit Managers: The Powerful Middlemen Inflating Drug Costs and Squeezing Main Street Pharmacies","sourcePublisher":"Federal Trade Commission","sourceUrl":"https://www.ftc.gov/news-events/news/press-releases/2024/07/ftc-releases-interim-staff-report-prescription-drug-middlemen","sourceAccessDate":"2026-05-16","sourceProfileHref":"/sources/ftc-pbm-interim-2024"},{"id":"def-ai-chatbot","marketId":"mkt-ai-chatbot","productBoundary":"Consumer generative AI assistant usage across StatCounter-tracked assistants","geographicBoundary":"United States","measurementBasis":"StatCounter all-platform AI chatbot usage share","denominator":"The tracked assistant shares reported by StatCounter for the monthly snapshot","included":"The assistants listed in the StatCounter share table","excluded":"AI revenue, total users, enterprise use, model supply, chips, and cloud infrastructure","metricFamily":"usage_shares","definitionStatus":"public_proxy","crossMarketUse":"screen_only","timeSeriesUse":"snapshot_only","sourceId":"statcounter-ai-chatbot-us-2026","dataYear":2026,"confidenceLevel":"medium","methodologyNote":"Compute HHI only from the listed StatCounter percentages for the same U.S. monthly usage snapshot.","limitations":"The usage series is a public web-analytics proxy and does not represent the broader AI supply chain or revenue concentration.","marketSlug":"us-ai-assistant-usage","marketName":"U.S. generative AI assistant usage","marketShortName":"AI assistants","sector":"Digital platforms","geography":"United States","marketNaicsCode":"518210","industryHref":"/industries/518210","crosswalkHref":"/markets/economy?bridgeMarket=us-ai-assistant-usage&bridgeNaics=518210#market-industry-crosswalk","sourceTitle":"AI chatbot market share in United States of America May 2026","sourcePublisher":"StatCounter Global Stats","sourceUrl":"https://gs.statcounter.com/ai-chatbot-market-share/all/united-states-of-america","sourceAccessDate":"2026-06-23","sourceProfileHref":"/sources/statcounter-ai-chatbot-us-2026"},{"id":"def-meatpacking","marketId":"mkt-meatpacking","productBoundary":"Purchases of steers and heifers by beef packers","geographicBoundary":"United States, while cattle procurement often occurs in regional markets","measurementBasis":"USDA-reported share of steer and heifer purchases handled by the four largest beef packers","denominator":"All U.S. steer and heifer purchases represented in the USDA historical CR4 series","included":"The aggregate top-four packer share at published historical anchors","excluded":"Individual packer shares, hog purchases, regional procurement areas, cattle prices, and wholesale beef sales","metricFamily":"aggregate_concentration","definitionStatus":"agency_defined","crossMarketUse":"not_comparable","timeSeriesUse":"comparable_anchors","sourceId":"usda-ers-meatpacking-2024","dataYear":2019,"confidenceLevel":"high","methodologyNote":"Publish the USDA national CR4 anchors and withhold HHI until a complete individual packer-share distribution is public and citable.","limitations":"A national aggregate buyer-side CR4 is not an HHI, does not identify individual firms, and does not define the regional procurement choices facing a particular rancher or feeder.","marketSlug":"us-steer-heifer-meatpacking-purchases","marketName":"U.S. steer and heifer purchases by beef packers","marketShortName":"Beef meatpacking","sector":"Food and agriculture","geography":"United States / regional cattle procurement markets","marketNaicsCode":"311611","industryHref":"/industries/311611","crosswalkHref":"/markets/economy?bridgeMarket=us-steer-heifer-meatpacking-purchases&bridgeNaics=311611#market-industry-crosswalk","sourceTitle":"Concentration in U.S. Meatpacking Industry and How It Affects Competition and Cattle Prices","sourcePublisher":"U.S. Department of Agriculture Economic Research Service","sourceUrl":"https://www.ers.usda.gov/amber-waves/2024/january/concentration-in-u-s-meatpacking-industry-and-how-it-affects-competition-and-cattle-prices","sourceAccessDate":"2026-07-19","sourceProfileHref":"/sources/usda-ers-meatpacking-2024"},{"id":"def-mobile-os","marketId":"mkt-mobile-os","productBoundary":"Mobile operating-system web usage detected in mobile page views","geographicBoundary":"United States","measurementBasis":"StatCounter mobile operating-system page-view share","denominator":"U.S. mobile page views recorded on StatCounter-tracked websites in each pinned April snapshot","included":"Every operating-system category published in the source row, including small and Other categories","excluded":"Device sales, installed base, active devices, app-store activity, operating-system revenue, desktop usage, and tying conduct","metricFamily":"usage_shares","definitionStatus":"public_proxy","crossMarketUse":"screen_only","timeSeriesUse":"comparable_anchors","sourceId":"statcounter-mobile-os-us-2026","dataYear":2026,"confidenceLevel":"medium","methodologyNote":"Compute HHI from the complete category distribution in each same-month StatCounter U.S. mobile export and retain source labels without combining operator families.","limitations":"Page-view usage is a public web-analytics proxy. It does not measure devices, users, sales, revenue, or a legally defined mobile operating-system market.","marketSlug":"us-mobile-operating-system-usage","marketName":"U.S. mobile operating-system web usage","marketShortName":"Mobile operating systems","sector":"Digital platforms","geography":"United States","marketNaicsCode":"513210","industryHref":"/industries/513210","crosswalkHref":"/markets/economy?bridgeMarket=us-mobile-operating-system-usage&bridgeNaics=513210#market-industry-crosswalk","sourceTitle":"Mobile operating system market share in United States of America, April 2023-April 2026","sourcePublisher":"StatCounter Global Stats","sourceUrl":"https://gs.statcounter.com/chart.php?device=Mobile&device_hidden=mobile&statType_hidden=os&region_hidden=US&granularity=monthly&statType=Operating%20System&region=United%20States%20of%20America&fromInt=202304&toInt=202604&fromMonthYear=2023-04&toMonthYear=2026-04&csv=1","sourceAccessDate":"2026-07-20","sourceProfileHref":"/sources/statcounter-mobile-os-us-2026"},{"id":"def-social-referral","marketId":"mkt-social-referral","productBoundary":"Outbound web referrals from social-media sites","geographicBoundary":"United States","measurementBasis":"StatCounter all-platform social-media referral share","denominator":"U.S. page views on StatCounter-tracked websites that were referred by a tracked social-media site in each pinned April snapshot","included":"Every social-media referral category published in the source row, including small and Other categories","excluded":"In-platform activity, users, time spent, posts, engagement, advertising revenue, messaging, video consumption without an outbound referral, and legal market boundaries","metricFamily":"usage_shares","definitionStatus":"public_proxy","crossMarketUse":"screen_only","timeSeriesUse":"comparable_anchors","sourceId":"statcounter-social-referral-us-2026","dataYear":2026,"confidenceLevel":"medium","methodologyNote":"Compute HHI from the complete category distribution in each same-month StatCounter U.S. social-media export and preserve the outbound-referral denominator.","limitations":"Referral share ranks traffic-generation to sampled third-party websites. It is not platform audience share, engagement share, advertising share, or a legally defined social-network market.","marketSlug":"us-social-media-referral-traffic","marketName":"U.S. social-media referral traffic","marketShortName":"Social referrals","sector":"Digital platforms","geography":"United States","marketNaicsCode":"519290","industryHref":"/industries/519290","crosswalkHref":"/markets/economy?bridgeMarket=us-social-media-referral-traffic&bridgeNaics=519290#market-industry-crosswalk","sourceTitle":"Social media referral share in United States of America, April 2023-April 2026","sourcePublisher":"StatCounter Global Stats","sourceUrl":"https://gs.statcounter.com/chart.php?device=Desktop%20%26%20Mobile%20%26%20Tablet%20%26%20Console&device_hidden=desktop%2Bmobile%2Btablet%2Bconsole&multi-device=true&statType_hidden=social_media&region_hidden=US&granularity=monthly&statType=Social%20Media&region=United%20States%20of%20America&fromInt=202304&toInt=202604&fromMonthYear=2023-04&toMonthYear=2026-04&csv=1","sourceAccessDate":"2026-07-20","sourceProfileHref":"/sources/statcounter-social-referral-us-2026"},{"id":"def-individual-insurance","marketId":"mkt-individual-insurance","productBoundary":"ACA-regulated individual health insurance represented in the KFF competition dataset","geographicBoundary":"United States for the canonical national profile; states and the District of Columbia remain separately reported jurisdiction screens","measurementBasis":"KFF source-reported HHI, leading-insurer share, and count of insurers above 5 percent","denominator":"Enrollment represented in KFF's 2024 ACA-regulated individual-market analysis","included":"The national HHI anchor and complete 51-jurisdiction state concentration cross-section","excluded":"Employer-sponsored insurance, Medicare, Medicaid, other insurance products, insurer identities and common control, and any causal or legal conclusion","metricFamily":"source_reported_hhi","definitionStatus":"source_defined","crossMarketUse":"screen_only","timeSeriesUse":"snapshot_only","sourceId":"kff-individual-insurance-market-2024","dataYear":2024,"confidenceLevel":"high","methodologyNote":"Publish the source-reported national HHI as the market-profile anchor and retain every jurisdiction row in the linked state atlas with the KFF methodology note.","limitations":"This is a one-year cross-section of a source-defined insurance market. Jurisdiction measures do not identify insurers, establish competitive effects, or extend to other insurance products.","marketSlug":"us-aca-individual-health-insurance","marketName":"U.S. ACA individual health insurance","marketShortName":"Individual insurance","sector":"Health insurance","geography":"United States / separately reported state and District of Columbia markets","marketNaicsCode":"524114","industryHref":"/industries/524114","crosswalkHref":"/markets/economy?bridgeMarket=us-aca-individual-health-insurance&bridgeNaics=524114#market-industry-crosswalk","sourceTitle":"Individual Insurance Market Competition (HHI by state)","sourcePublisher":"KFF","sourceUrl":"https://www.kff.org/state-health-policy-data/state-indicator/individual-insurance-market-competition/","sourceAccessDate":"2026-06-23","sourceProfileHref":"/sources/kff-individual-insurance-market-2024"}]}