{"license":"https://creativecommons.org/licenses/by/4.0/","dataset":"atlas","mode":"workspace","updatedThrough":"2026-08-15","citation":"Antitrust Radar, Atlas Research Workspace: Tracked market CR4; U.S. browser usage (2026-08-15); 2 canonical profiles and 1 declared supporting edges.","guardrail":"The workspace assembles canonical profiles and declared Atlas edges for research navigation. A direct edge preserves only its encoded evidence statement. A multi-hop route does not establish a direct endpoint relationship, make unlike measures comparable, define a legal market, assign ownership, control, liability, or causation, or prove a policy effect.","filters":{"duplicateItems":[],"items":["indicator:market-cr4","market:mkt-browser"],"itemsMatched":true,"requestedItems":["indicator:market-cr4","market:mkt-browser"],"truncated":false,"unmatchedItems":[],"layer":"measurement","layerMatched":true,"view":"map"},"diagnostics":{"bridgeDependenceRate":0,"confidenceCounts":{"bounded":1,"high":0,"low":0,"medium":0},"connectedPairRate":1,"directPairRate":1,"layerCounts":[{"count":1,"layer":"measurement"},{"count":0,"layer":"organization"},{"count":0,"layer":"enforcement"},{"count":0,"layer":"research"}],"sourceBearingEdgeCount":1,"sourceCoverageRate":1,"transitNodes":[]},"summary":{"bridgedPairCount":0,"connectedPairCount":1,"connectorNodeCount":0,"directPairCount":1,"disconnectedPairCount":0,"layerCount":1,"ledgerEdgeCount":1,"nodeKindCount":2,"pairCount":1,"selectedNodeCount":2,"sourceCount":1},"selectedNodes":[{"id":"indicator:market-cr4","kind":"indicator","label":"Tracked market CR4","shortLabel":"Market CR4","description":"Released four-participant concentration anchors from source-labeled shares or source-reported aggregate CR4.","href":"/indicators/market-cr4","metricLabel":"Observation rows","metricValue":"21","detail":"7 entities / 1980-2026","status":"markets","year":2026,"color":"#06b6d4","searchText":"market-cr4 tracked market cr4 market cr4 released four-participant concentration anchors from source-labeled shares or source-reported aggregate cr4. markets percent","connectionCount":19},{"id":"market:mkt-browser","kind":"market","label":"U.S. browser usage","shortLabel":"Browsers","description":"All-platform U.S. browser usage share from StatCounter Global Stats for April 2026. The profile tracks browser usage concentration, not browser advertising or operating-system tying questions.","href":"/markets/us-browser-usage","metricLabel":"Latest HHI","metricValue":"3,612","detail":"United States / 2026","status":"estimated_public","year":2026,"color":"#14b8a6","searchText":"u.s. browser usage browsers software united states all-platform u.s. browser usage share from statcounter global stats for april 2026. the profile tracks browser usage concentration, not browser advertising or operating-system tying questions.","connectionCount":21}],"connectorNodes":[],"pairs":[{"id":"indicator:market-cr4--market:mkt-browser","leftId":"indicator:market-cr4","leftLabel":"Tracked market CR4","rightId":"market:mkt-browser","rightLabel":"U.S. browser usage","status":"direct","directEdgeCount":1,"shortestHopCount":1,"alternativeShortestPathCount":0,"primaryPathNodeIds":["indicator:market-cr4","market:mkt-browser"],"primaryPathEdgeIds":["profile-indicator:market:mkt-browser:market-cr4"]}],"sources":[{"edgeCount":1,"href":"/sources/statcounter-browser-us-2026","id":"statcounter-browser-us-2026","label":"Browser market share in United States of America, April 2023-April 2026","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"}],"rows":[{"id":"profile-indicator:market:mkt-browser:market-cr4","layer":"measurement","relationshipType":"profile_indicator","relationshipLabel":"Observed by indicator","fromId":"market:mkt-browser","fromKind":"market","fromLabel":"U.S. browser usage","fromHref":"/markets/us-browser-usage","toId":"indicator:market-cr4","toKind":"indicator","toLabel":"Tracked market CR4","toHref":"/indicators/market-cr4","evidenceLabel":"Tracked market CR4 registry","evidenceDetail":"U.S. browser usage has 4 exact Market CR4 rows spanning 2023-2026 across 1 registered source.","sourceId":"statcounter-browser-us-2026","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","confidenceLevel":"bounded","indicatorId":"market-cr4","entityCode":"us-browser-usage","observationCount":4,"firstYear":2023,"latestYear":2026,"preferredView":"trend","sourceIds":"statcounter-browser-us-2026","guardrail":"A profile-indicator edge records exact rows in one documented indicator contract; it does not make unlike measures comparable, define an antitrust market, or establish a legal or causal conclusion."}]}