Antitrust Radar

Participant observatory

Market participant atlas

Explore the firms, products, services, and aggregate categories named in published market data. Shares and comparisons apply only within their stated market and observation period.

Latest source-labeled share

Participant positions inside bounded markets

x = latest share
circle = observations

Latest participant share by measured market

Fifty-five source-labeled participants plotted within eight separate market lanes. Horizontal position is latest reported share, circle size represents the number of observed years, color indicates whether the label is a firm, product or service, or aggregate, and every point opens a participant dossier.

Search enginesHHI 7,359 / lead 85.2%
Mobile operating systemsHHI 5,337 / lead 63.1%
Social referralsHHI 4,995 / lead 68.9%
AI assistantsHHI 4,804 / lead 67.1%
BrowsersHHI 3,612 / lead 50.0%
Beef meatpackingHHI unavailable / lead 85.0%
Domestic airlinesHHI unavailable / lead 17.8%
Rental housingHHI unavailable / lead 22.0%
FirmProduct or serviceAggregate or residual
Participant profiles
5510 firms / 36 products / 9 aggregate
Share observations
1621980-2026
Measured markets
836 longitudinal labels
Operator labels
2028 official attributions
Source-labeled entityEach profile preserves the exact firm, product, service, or residual label used by its underlying evidence.
Within-market onlyCompare points inside one lane. Definitions, geographies, denominators, and source years can differ across lanes.

Participant lens

Reported share across measured markets

Every point is a sourced share in its own market. Compare positions within a row; market definitions and denominators can differ across rows.

55Visible10Firms36Products8Markets
Participant kind
FirmProduct or serviceAggregate or residual

Horizontal position = latest reported share

AI assistants

HHI 4,804
ChatGPT67.1%Google Gemini10.9%Microsoft Copilot10.8%Claude6.0%Perplexity5.2%DeepSeek0.05%

Beef meatpacking

HHI unavailable
Four largest beef packers85.0%

Browsers

HHI 3,612
Chrome50.0%Safari31.9%Edge8.1%Firefox3.8%Brave2.7%Other browsers2.1%Samsung Internet1.4%

Domestic airlines

HHI unavailable
Delta Air Lines17.8%American Airlines17.5%Southwest Airlines17.0%United Airlines16.7%Other airlines9.0%Alaska Airlines6.3%JetBlue Airways4.5%Frontier Airlines3.7%Spirit Airlines3.3%SkyWest Airlines2.6%Hawaiian Airlines1.6%

Mobile operating systems

HHI 5,337
iOS63.1%Android36.9%Samsung0.05%KaiOS0.02%Linux0.00%Other mobile operating systems0.00%SymbianOS0.00%Unknown mobile OS0.00%Windows Phone0.00%

Rental housing

HHI unavailable
Institutional investors in Jacksonville SFR22.0%Institutional investors in Seattle SFR4.0%

Search engines

HHI 7,359
Google Search85.2%Bing9.8%Yahoo Search2.7%DuckDuckGo1.7%Yandex0.38%Other search engines0.12%Ecosia0.11%

Social referrals

HHI 4,995
Facebook68.9%Twitter / X11.6%Pinterest7.5%Instagram6.3%Reddit2.4%YouTube2.3%LinkedIn0.40%Tumblr0.29%Fark0.16%Hacker News0.09%Other social referrals0.00%VKontakte0.00%

Google Search

Product or service

Search engines / 2026 / StatCounter Global Stats

Share85.2%Rank#1Latest change-1.55 ppOpen profile

Profile directory

55 source-labeled records

9 aggregate or residual rows visible

Google SearchGOOGLProduct or service / Search engine participant reported by StatCounter.Measured marketSearch enginesLatest share85.2%Coverage2023-2026SignalLatest share decreasedFour largest beef packersAggregate or residual / Aggregate USDA CR4 category for the four largest purchasers of U.S. steers and heifers; not a single firm.Measured marketBeef meatpackingLatest share85.0%Coverage1980-2019SignalLatest share increasedFacebookMETAProduct or service / Social-media referral category reported by StatCounter.Measured marketSocial referralsLatest share68.9%Coverage2023-2026SignalLatest share increasedChatGPTProduct or service / Generative AI assistant from OpenAI reported by StatCounter.Measured marketAI assistantsLatest share67.1%Coverage2026SignalSingle-year snapshotiOSAAPLProduct or service / Mobile operating-system category reported by StatCounter.Measured marketMobile operating systemsLatest share63.1%Coverage2023-2026SignalLatest share increasedChromeGOOGLProduct or service / Browser participant reported by StatCounter.Measured marketBrowsersLatest share50.0%Coverage2023-2026SignalLatest share decreasedAndroidProduct or service / Mobile operating-system category reported by StatCounter.Measured marketMobile operating systemsLatest share36.9%Coverage2023-2026SignalLatest share decreasedSafariAAPLProduct or service / Browser participant reported by StatCounter.Measured marketBrowsersLatest share31.9%Coverage2023-2026SignalLatest share increasedInstitutional investors in Jacksonville SFRAggregate or residual / GAO-selected aggregate share of single-family rental homes owned by institutional investors in the Jacksonville market.Measured marketRental housingLatest share22.0%Coverage2026SignalSingle-year snapshotDelta Air LinesDALFirm / U.S. airline.Measured marketDomestic airlinesLatest share17.8%Coverage2026SignalSingle-year snapshotAmerican AirlinesAALFirm / U.S. airline.Measured marketDomestic airlinesLatest share17.5%Coverage2026SignalSingle-year snapshotSouthwest AirlinesLUVFirm / U.S. airline.Measured marketDomestic airlinesLatest share17.0%Coverage2026SignalSingle-year snapshotUnited AirlinesUALFirm / U.S. airline.Measured marketDomestic airlinesLatest share16.7%Coverage2026SignalSingle-year snapshotTwitter / XProduct or service / Social-media referral category labeled Twitter by StatCounter.Measured marketSocial referralsLatest share11.6%Coverage2023-2026SignalLatest share decreasedGoogle GeminiGOOGLProduct or service / Generative AI assistant from Google reported by StatCounter.Measured marketAI assistantsLatest share10.9%Coverage2026SignalSingle-year snapshotMicrosoft CopilotMSFTProduct or service / Generative AI assistant from Microsoft reported by StatCounter.Measured marketAI assistantsLatest share10.8%Coverage2026SignalSingle-year snapshotBingMSFTProduct or service / Search engine participant reported by StatCounter.Measured marketSearch enginesLatest share9.8%Coverage2023-2026SignalLatest share increasedOther airlinesAggregate or residual / Aggregated BTS Other category.Measured marketDomestic airlinesLatest share9.0%Coverage2026SignalSingle-year snapshotEdgeMSFTProduct or service / Browser participant reported by StatCounter.Measured marketBrowsersLatest share8.1%Coverage2023-2026SignalLatest share increasedPinterestPINSProduct or service / Social-media referral category reported by StatCounter.Measured marketSocial referralsLatest share7.5%Coverage2023-2026SignalLatest share decreasedAlaska AirlinesALKFirm / U.S. airline.Measured marketDomestic airlinesLatest share6.3%Coverage2026SignalSingle-year snapshotInstagramMETAProduct or service / Social-media referral category reported by StatCounter.Measured marketSocial referralsLatest share6.3%Coverage2023-2026SignalLatest share decreasedClaudeProduct or service / Generative AI assistant from Anthropic reported by StatCounter.Measured marketAI assistantsLatest share6.0%Coverage2026SignalSingle-year snapshotPerplexityProduct or service / Generative AI assistant reported by StatCounter.Measured marketAI assistantsLatest share5.2%Coverage2026SignalSingle-year snapshotJetBlue AirwaysJBLUFirm / U.S. airline.Measured marketDomestic airlinesLatest share4.5%Coverage2026SignalSingle-year snapshotInstitutional investors in Seattle SFRAggregate or residual / GAO-selected aggregate share of single-family rental homes owned by institutional investors in the Seattle market.Measured marketRental housingLatest share4.0%Coverage2026SignalSingle-year snapshotFirefoxProduct or service / Browser participant reported by StatCounter.Measured marketBrowsersLatest share3.8%Coverage2023-2026SignalLatest share decreasedFrontier AirlinesULCCFirm / U.S. airline.Measured marketDomestic airlinesLatest share3.7%Coverage2026SignalSingle-year snapshotSpirit AirlinesFirm / U.S. airline.Measured marketDomestic airlinesLatest share3.3%Coverage2026SignalSingle-year snapshotBraveProduct or service / Browser participant reported by StatCounter.Measured marketBrowsersLatest share2.7%Coverage2023-2026SignalLatest share increasedYahoo SearchProduct or service / Search engine participant reported by StatCounter.Measured marketSearch enginesLatest share2.7%Coverage2023-2026SignalLatest share decreasedSkyWest AirlinesSKYWFirm / U.S. regional airline.Measured marketDomestic airlinesLatest share2.6%Coverage2026SignalSingle-year snapshotRedditRDDTProduct or service / Social-media referral category reported by StatCounter.Measured marketSocial referralsLatest share2.4%Coverage2023-2026SignalLatest share increasedYouTubeGOOGLProduct or service / Social-media referral category reported by StatCounter.Measured marketSocial referralsLatest share2.3%Coverage2023-2026SignalLatest share increasedOther browsersAggregate or residual / Residual category derived from listed StatCounter shares.Measured marketBrowsersLatest share2.1%Coverage2023-2026SignalLatest share decreasedDuckDuckGoProduct or service / Search engine participant reported by StatCounter.Measured marketSearch enginesLatest share1.7%Coverage2023-2026SignalLatest share decreasedHawaiian AirlinesFirm / U.S. airline.Measured marketDomestic airlinesLatest share1.6%Coverage2026SignalSingle-year snapshotSamsung InternetProduct or service / Browser participant reported by StatCounter.Measured marketBrowsersLatest share1.4%Coverage2023-2026SignalLatest share decreasedLinkedInMSFTProduct or service / Social-media referral category reported by StatCounter.Measured marketSocial referralsLatest share0.40%Coverage2023-2026SignalLatest share decreasedYandexProduct or service / Search engine participant reported by StatCounter.Measured marketSearch enginesLatest share0.38%Coverage2023-2026SignalLatest share increasedTumblrProduct or service / Social-media referral category reported by StatCounter.Measured marketSocial referralsLatest share0.29%Coverage2023-2026SignalLatest share decreasedFarkProduct or service / Social-media referral category reported by StatCounter.Measured marketSocial referralsLatest share0.16%Coverage2023-2026SignalLatest share stableOther search enginesAggregate or residual / Residual category derived from listed StatCounter shares.Measured marketSearch enginesLatest share0.12%Coverage2023-2026SignalLatest share decreasedEcosiaProduct or service / Search engine participant reported by StatCounter.Measured marketSearch enginesLatest share0.11%Coverage2023-2026SignalLatest share stableHacker NewsProduct or service / Social-media referral category reported by StatCounter.Measured marketSocial referralsLatest share0.09%Coverage2023-2026SignalLatest share stableDeepSeekProduct or service / Generative AI assistant reported by StatCounter.Measured marketAI assistantsLatest share0.05%Coverage2026SignalSingle-year snapshotSamsungProduct or service / Mobile operating-system category reported by StatCounter.Measured marketMobile operating systemsLatest share0.05%Coverage2023-2026SignalLatest share decreasedKaiOSProduct or service / Mobile operating-system category reported by StatCounter.Measured marketMobile operating systemsLatest share0.02%Coverage2023-2026SignalLatest share stableLinuxProduct or service / Mobile operating-system category reported by StatCounter.Measured marketMobile operating systemsLatest share0.00%Coverage2023-2026SignalLatest share stableOther mobile operating systemsAggregate or residual / Source-reported Other mobile operating-system category.Measured marketMobile operating systemsLatest share0.00%Coverage2023-2026SignalLatest share stableOther social referralsAggregate or residual / Source-reported Other social-media referral category.Measured marketSocial referralsLatest share0.00%Coverage2023-2026SignalLatest share stableSymbianOSProduct or service / Mobile operating-system category reported by StatCounter.Measured marketMobile operating systemsLatest share0.00%Coverage2023-2026SignalLatest share stableUnknown mobile OSAggregate or residual / Source-reported unknown mobile operating-system category.Measured marketMobile operating systemsLatest share0.00%Coverage2023-2026SignalLatest share stableVKontakteProduct or service / Social-media referral category reported by StatCounter.Measured marketSocial referralsLatest share0.00%Coverage2023-2026SignalLatest share stableWindows PhoneMSFTProduct or service / Mobile operating-system category reported by StatCounter.Measured marketMobile operating systemsLatest share0.00%Coverage2023-2026SignalLatest share stable

These profiles describe source-labeled market participants, not legal entities or findings of market power. Shares only apply to the stated market definition, geography, denominator, and year.