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CR4, and leading-share comparisons preserve their own product boundary, denominator, source, and observed interval. The direction count is an inventory, not a vote about competition. HHI points, CR4 points, and leading-share points across different products and periods are not pooled or ranked.","href":"/insights/market-structure-change-field","metricLabel":"Exact signals","metricValue":"15","detail":"AR-CI-2026-01 / Domain readout","status":"current insight","year":2026,"color":"#6366f1","searchText":"latest market-structure signals moved in both directions. market change field fifteen hhi, cr4, and leading-share comparisons preserve their own product boundary, denominator, source, and observed interval. defined markets domain readout ar-ci-2026-01 the current market field is split. across 15 exact latest-to-prior rows, 8 increased, 7 decreased. the count says only how many bounded comparisons point each way. digital usage screens diverged. social referrals moved from 3,804 in 2025 to 4,995 in 2026 (+1,191.0 hhi points). search engines moved from 7,589 in 2025 to 7,359 in 2026 (-230.0 hhi points). mobile operating systems moved from 5,094 in 2025 to 5,337 in 2026 (+243.0 hhi points). browsers moved from 3,720 in 2025 to 3,612 in 2026 (-108.0 hhi points). each usage system has a separate denominator and remains analytically independent. other market intervals use different clocks. beef meatpacking moved from 81.0% in 1995 to 85.0% in 2019 (+4.00 percentage points). fixed broadband moved from 1,195 in 2023 to 1,501 in 2024 (+306.0 hhi points). wireless service moved from 3,596 in 2021 to 3,550 in 2023 (-46.0 hhi points). their unequal intervals are displayed, not annualized. beef meatpacking four-participant concentration ratio browsers four-participant concentration ratio browsers herfindahl-hirschman index browsers leading-participant share fixed broadband herfindahl-hirschman index mobile operating systems four-participant concentration ratio mobile operating systems herfindahl-hirschman index mobile operating systems leading-participant share search engines four-participant concentration ratio search engines herfindahl-hirschman index search engines leading-participant share social referrals four-participant concentration ratio social referrals herfindahl-hirschman index social referrals leading-participant share wireless service herfindahl-hirschman index u.s. steer and heifer purchases by beef packers u.s. browser usage u.s. residential fixed broadband access u.s. mobile operating-system web usage u.s. search engine usage u.s. social-media referral traffic u.s. mobile wireless service","connectionCount":15,"x":231.175,"y":166.407,"distance":2,"radius":8,"labelVisible":false},{"id":"report:rep-digital-gateways","kind":"report","label":"Five Digital Gateways","shortLabel":"Five Digital Gateways","description":"A source-backed research brief tracing search, browser, mobile operating-system, social-referral, and AI-assistant concentration without collapsing them into one platform market or ecosystem score.","href":"/reports/digital-gateways-brief","metricLabel":"Evidence sources","metricValue":"5","detail":"5 linked markets","status":"published","year":2026,"color":"#6366f1","searchText":"five digital gateways u.s. platform concentration across five separately bounded usage systems a source-backed research brief tracing search, browser, mobile operating-system, social-referral, and ai-assistant concentration without collapsing them into one platform market or ecosystem score. five system histories, exact share rows, official product-attribution paths, and a public research agenda with every denominator kept separate. five statcounter u.s. public usage-share sources: april 2023-april 2026 search, browser, mobile operating-system, and social-referral anchors, plus the may 2026 ai-assistant baseline. official product-attribution records remain a separate evidence layer.","connectionCount":12,"x":270.807,"y":103.368,"distance":2,"radius":8,"labelVisible":false},{"id":"report:insight-digital-gateways-change","kind":"report","label":"Four digital usage systems traced four different structural paths.","shortLabel":"Digital gateways","description":"Browser, mobile operating-system, search-engine, and social-referral shares are read side by side without turning them into one platform-power score. Usage and referral shares are proxies inside separately defined systems. The dispatch does not add shares across products, resolve legal market definition, or infer a common competitive cause.","href":"/insights/digital-gateways-change","metricLabel":"Exact signals","metricValue":"12","detail":"AR-CI-2026-02 / Focused note","status":"current insight","year":2026,"color":"#6366f1","searchText":"four digital usage systems traced four different structural paths. digital gateways browser, mobile operating-system, search-engine, and social-referral shares are read side by side without turning them into one platform-power score. defined markets focused note ar-ci-2026-02 social-referral composition shifted toward the leader. social referrals moved from 3,804 in 2025 to 4,995 in 2026 (+1,191.0 hhi points). social referrals moved from 57.5% in 2025 to 68.9% in 2026 (+11.49 percentage points). social referrals moved from 95.1% in 2025 to 94.4% in 2026 (-0.71 percentage points). search hhi and leading share both moved lower. search engines moved from 7,589 in 2025 to 7,359 in 2026 (-230.0 hhi points). search engines moved from 86.7% in 2025 to 85.2% in 2026 (-1.55 percentage points). search engines moved from 99.4% in 2025 to 99.4% in 2026 (-0.02 percentage points). mobile operating-system hhi and leading share moved higher. mobile operating systems moved from 5,094 in 2025 to 5,337 in 2026 (+243.0 hhi points). mobile operating systems moved from 57.6% in 2025 to 63.1% in 2026 (+5.48 percentage points). mobile operating systems moved from 100.0% in 2025 to 100.0% in 2026 (+0.04 percentage points). browser hhi and leading share moved lower while cr4 edged higher. browsers moved from 3,720 in 2025 to 3,612 in 2026 (-108.0 hhi points). browsers moved from 52.3% in 2025 to 50.0% in 2026 (-2.29 percentage points). browsers moved from 93.6% in 2025 to 93.8% in 2026 (+0.15 percentage points). browsers four-participant concentration ratio browsers herfindahl-hirschman index browsers leading-participant share mobile operating systems four-participant concentration ratio mobile operating systems herfindahl-hirschman index mobile operating systems leading-participant share search engines four-participant concentration ratio search engines herfindahl-hirschman index search engines leading-participant share social referrals four-participant concentration ratio social referrals herfindahl-hirschman index social referrals leading-participant share u.s. browser usage u.s. mobile operating-system web usage u.s. search engine usage u.s. social-media referral traffic","connectionCount":10,"x":327.979,"y":55.66,"distance":2,"radius":8,"labelVisible":false},{"id":"source:statcounter-social-referral-us-2026","kind":"source","label":"Social media referral share in United States of America, April 2023-April 2026","shortLabel":"StatCounter Global Stats","description":"Monthly public StatCounter all-platform social-media referral share export for the United States.","href":"/sources/statcounter-social-referral-us-2026","metricLabel":"Access 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