{"license":"https://creativecommons.org/licenses/by/4.0/","dataset":"atlas","mode":"comparison","updatedThrough":"2026-08-15","guardrail":"A bilateral atlas route preserves a sequence of declared edges for navigation and audit. A direct edge, common neighbor, or multi-hop path does not make the endpoints equivalent, establish ownership or control, assign liability, define an antitrust market, make unlike measures comparable, or show causation.","filters":{"layer":"measurement","layerMatched":true,"left":"industry:487","leftMatched":true,"right":"source:census-ecnsize-concentration-2022","rightMatched":true,"view":"paths"},"summary":{"nodeCount":5478,"edgeCount":19193,"sourceCount":1,"profileCount":5433,"nodeKindCount":13,"layerCount":4,"directEdgeCount":1,"disconnected":false,"eligibleEdgeCount":18549,"ledgerEdgeCount":9,"leftNeighborCount":5,"pathLimitReached":false,"rightNeighborCount":1868,"sharedNeighborCount":4,"shortestHopCount":1,"shortestPathCount":1},"endpoints":{"left":{"id":"industry:487","kind":"industry","label":"Scenic and sightseeing transportation","shortLabel":"487 Scenic and sightse...","description":"2022 Economic Census employer-firm concentration screen for NAICS 487.","href":"/industries/487","metricLabel":"Revenue HHI","metricValue":"D","detail":"3K firms / 4.8B revenue","status":"disclosure withheld","year":2022,"color":"#f59e0b","searchText":"487 scenic and sightseeing transportation 48","connectionCount":5},"right":{"id":"source:census-ecnsize-concentration-2022","kind":"source","label":"2022 Economic Census Concentration of Largest Firms","shortLabel":"U.S. Census Bureau","description":"Economy-wide national firm concentration statistics by 2022 NAICS industry including revenue-based HHI and largest-firm concentration ratios.","href":"/sources/census-ecnsize-concentration-2022","metricLabel":"Access date","metricValue":"2026-07-17","detail":"U.S. Census Bureau","status":"public dataset","year":2026,"color":"#64748b","searchText":"census-ecnsize-concentration-2022 2022 economic census concentration of largest firms u.s. census bureau economy-wide national firm concentration statistics by 2022 naics industry including revenue-based hhi and largest-firm concentration ratios. u.s. census bureau, 2022 economic census, ec2200sizeconcen: selected sectors - concentration of largest firms for the united states, released april 2025. public_dataset","connectionCount":1872}},"shortestPaths":[{"id":"path:industry-source:487:census-ecnsize-concentration-2022","edges":[{"id":"industry-source:487:census-ecnsize-concentration-2022","type":"industry_source","layer":"measurement","from":"industry:487","to":"source:census-ecnsize-concentration-2022","label":"Economic Census source","detail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 487.","evidenceLabel":"U.S. Census Bureau","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."}],"hopCount":1,"nodes":[{"id":"industry:487","kind":"industry","label":"Scenic and sightseeing transportation","shortLabel":"487 Scenic and sightse...","description":"2022 Economic Census employer-firm concentration screen for NAICS 487.","href":"/industries/487","metricLabel":"Revenue HHI","metricValue":"D","detail":"3K firms / 4.8B revenue","status":"disclosure withheld","year":2022,"color":"#f59e0b","searchText":"487 scenic and sightseeing transportation 48","connectionCount":5},{"id":"source:census-ecnsize-concentration-2022","kind":"source","label":"2022 Economic Census Concentration of Largest Firms","shortLabel":"U.S. Census Bureau","description":"Economy-wide national firm concentration statistics by 2022 NAICS industry including revenue-based HHI and largest-firm concentration ratios.","href":"/sources/census-ecnsize-concentration-2022","metricLabel":"Access date","metricValue":"2026-07-17","detail":"U.S. Census Bureau","status":"public dataset","year":2026,"color":"#64748b","searchText":"census-ecnsize-concentration-2022 2022 economic census concentration of largest firms u.s. census bureau economy-wide national firm concentration statistics by 2022 naics industry including revenue-based hhi and largest-firm concentration ratios. u.s. census bureau, 2022 economic census, ec2200sizeconcen: selected sectors - concentration of largest firms for the united states, released april 2025. public_dataset","connectionCount":1872}]}],"sharedNeighbors":[{"leftEdges":[{"id":"industry-hierarchy:4871:487","type":"industry_hierarchy","layer":"measurement","from":"industry:4871","to":"industry:487","label":"NAICS parent classification","detail":"Scenic and sightseeing transportation, land (NAICS 4871) is classified under Scenic and sightseeing transportation (NAICS 487) in the 2022 NAICS hierarchy.","evidenceLabel":"2022 NAICS hierarchy","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."}],"node":{"id":"industry:4871","kind":"industry","label":"Scenic and sightseeing transportation, land","shortLabel":"4871 Scenic and sights...","description":"2022 Economic Census employer-firm concentration screen for NAICS 4871.","href":"/industries/4871","metricLabel":"Revenue HHI","metricValue":"199.8","detail":"598 firms / 1.2B revenue","status":"published","year":2022,"color":"#f59e0b","searchText":"4871 scenic and sightseeing transportation, land 48","connectionCount":3},"rightEdges":[{"id":"industry-source:4871:census-ecnsize-concentration-2022","type":"industry_source","layer":"measurement","from":"industry:4871","to":"source:census-ecnsize-concentration-2022","label":"Economic Census source","detail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 4871.","evidenceLabel":"U.S. Census Bureau","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."}]},{"leftEdges":[{"id":"industry-hierarchy:4879:487","type":"industry_hierarchy","layer":"measurement","from":"industry:4879","to":"industry:487","label":"NAICS parent classification","detail":"Scenic and sightseeing transportation, other (NAICS 4879) is classified under Scenic and sightseeing transportation (NAICS 487) in the 2022 NAICS hierarchy.","evidenceLabel":"2022 NAICS hierarchy","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."}],"node":{"id":"industry:4879","kind":"industry","label":"Scenic and sightseeing transportation, other","shortLabel":"4879 Scenic and sights...","description":"2022 Economic Census employer-firm concentration screen for NAICS 4879.","href":"/industries/4879","metricLabel":"Revenue HHI","metricValue":"668.8","detail":"250 firms / 776.6M revenue","status":"published","year":2022,"color":"#f59e0b","searchText":"4879 scenic and sightseeing transportation, other 48","connectionCount":3},"rightEdges":[{"id":"industry-source:4879:census-ecnsize-concentration-2022","type":"industry_source","layer":"measurement","from":"industry:4879","to":"source:census-ecnsize-concentration-2022","label":"Economic Census source","detail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 4879.","evidenceLabel":"U.S. Census Bureau","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."}]},{"leftEdges":[{"id":"industry-hierarchy:4872:487","type":"industry_hierarchy","layer":"measurement","from":"industry:4872","to":"industry:487","label":"NAICS parent classification","detail":"Scenic and sightseeing transportation, water (NAICS 4872) is classified under Scenic and sightseeing transportation (NAICS 487) in the 2022 NAICS hierarchy.","evidenceLabel":"2022 NAICS hierarchy","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."}],"node":{"id":"industry:4872","kind":"industry","label":"Scenic and sightseeing transportation, water","shortLabel":"4872 Scenic and sights...","description":"2022 Economic Census employer-firm concentration screen for NAICS 4872.","href":"/industries/4872","metricLabel":"Revenue HHI","metricValue":"D","detail":"2.2K firms / 2.8B revenue","status":"disclosure withheld","year":2022,"color":"#f59e0b","searchText":"4872 scenic and sightseeing transportation, water 48","connectionCount":3},"rightEdges":[{"id":"industry-source:4872:census-ecnsize-concentration-2022","type":"industry_source","layer":"measurement","from":"industry:4872","to":"source:census-ecnsize-concentration-2022","label":"Economic Census source","detail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 4872.","evidenceLabel":"U.S. Census Bureau","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."}]},{"leftEdges":[{"id":"industry-hierarchy:487:48-49","type":"industry_hierarchy","layer":"measurement","from":"industry:487","to":"industry:48-49","label":"NAICS parent classification","detail":"Scenic and sightseeing transportation (NAICS 487) is classified under Transportation and warehousing (NAICS 48-49) in the 2022 NAICS hierarchy.","evidenceLabel":"2022 NAICS hierarchy","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."}],"node":{"id":"industry:48-49","kind":"industry","label":"Transportation and warehousing","shortLabel":"48-49 Transportation a...","description":"2022 Economic Census employer-firm concentration screen for NAICS 48-49.","href":"/industries/48-49","metricLabel":"Revenue HHI","metricValue":"99.8","detail":"237.4K firms / 1.3T revenue","status":"published","year":2022,"color":"#f59e0b","searchText":"48-49 transportation and warehousing 48","connectionCount":16},"rightEdges":[{"id":"industry-source:48-49:census-ecnsize-concentration-2022","type":"industry_source","layer":"measurement","from":"industry:48-49","to":"source:census-ecnsize-concentration-2022","label":"Economic Census source","detail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 48-49.","evidenceLabel":"U.S. Census Bureau","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."}]}],"nodes":[{"id":"industry:487","kind":"industry","label":"Scenic and sightseeing transportation","shortLabel":"487 Scenic and sightse...","description":"2022 Economic Census employer-firm concentration screen for NAICS 487.","href":"/industries/487","metricLabel":"Revenue HHI","metricValue":"D","detail":"3K firms / 4.8B revenue","status":"disclosure withheld","year":2022,"color":"#f59e0b","searchText":"487 scenic and sightseeing transportation 48","connectionCount":5},{"id":"industry:4871","kind":"industry","label":"Scenic and sightseeing transportation, land","shortLabel":"4871 Scenic and sights...","description":"2022 Economic Census employer-firm concentration screen for NAICS 4871.","href":"/industries/4871","metricLabel":"Revenue HHI","metricValue":"199.8","detail":"598 firms / 1.2B revenue","status":"published","year":2022,"color":"#f59e0b","searchText":"4871 scenic and sightseeing transportation, land 48","connectionCount":3},{"id":"industry:4879","kind":"industry","label":"Scenic and sightseeing transportation, other","shortLabel":"4879 Scenic and sights...","description":"2022 Economic Census employer-firm concentration screen for NAICS 4879.","href":"/industries/4879","metricLabel":"Revenue HHI","metricValue":"668.8","detail":"250 firms / 776.6M revenue","status":"published","year":2022,"color":"#f59e0b","searchText":"4879 scenic and sightseeing transportation, other 48","connectionCount":3},{"id":"industry:4872","kind":"industry","label":"Scenic and sightseeing transportation, water","shortLabel":"4872 Scenic and sights...","description":"2022 Economic Census employer-firm concentration screen for NAICS 4872.","href":"/industries/4872","metricLabel":"Revenue HHI","metricValue":"D","detail":"2.2K firms / 2.8B revenue","status":"disclosure withheld","year":2022,"color":"#f59e0b","searchText":"4872 scenic and sightseeing transportation, water 48","connectionCount":3},{"id":"industry:48-49","kind":"industry","label":"Transportation and warehousing","shortLabel":"48-49 Transportation a...","description":"2022 Economic Census employer-firm concentration screen for NAICS 48-49.","href":"/industries/48-49","metricLabel":"Revenue HHI","metricValue":"99.8","detail":"237.4K firms / 1.3T revenue","status":"published","year":2022,"color":"#f59e0b","searchText":"48-49 transportation and warehousing 48","connectionCount":16},{"id":"source:census-ecnsize-concentration-2022","kind":"source","label":"2022 Economic Census Concentration of Largest Firms","shortLabel":"U.S. Census Bureau","description":"Economy-wide national firm concentration statistics by 2022 NAICS industry including revenue-based HHI and largest-firm concentration ratios.","href":"/sources/census-ecnsize-concentration-2022","metricLabel":"Access date","metricValue":"2026-07-17","detail":"U.S. Census Bureau","status":"public dataset","year":2026,"color":"#64748b","searchText":"census-ecnsize-concentration-2022 2022 economic census concentration of largest firms u.s. census bureau economy-wide national firm concentration statistics by 2022 naics industry including revenue-based hhi and largest-firm concentration ratios. u.s. census bureau, 2022 economic census, ec2200sizeconcen: selected sectors - concentration of largest firms for the united states, released april 2025. public_dataset","connectionCount":1872}],"rows":[{"id":"industry-hierarchy:487:48-49","layer":"measurement","relationshipType":"industry_hierarchy","relationshipLabel":"NAICS parent classification","fromId":"industry:487","fromKind":"industry","fromLabel":"Scenic and sightseeing transportation","fromHref":"/industries/487","toId":"industry:48-49","toKind":"industry","toLabel":"Transportation and warehousing","toHref":"/industries/48-49","evidenceLabel":"2022 NAICS hierarchy","evidenceDetail":"Scenic and sightseeing transportation (NAICS 487) is classified under Transportation and warehousing (NAICS 48-49) in the 2022 NAICS hierarchy.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."},{"id":"industry-hierarchy:4871:487","layer":"measurement","relationshipType":"industry_hierarchy","relationshipLabel":"NAICS parent classification","fromId":"industry:4871","fromKind":"industry","fromLabel":"Scenic and sightseeing transportation, land","fromHref":"/industries/4871","toId":"industry:487","toKind":"industry","toLabel":"Scenic and sightseeing transportation","toHref":"/industries/487","evidenceLabel":"2022 NAICS hierarchy","evidenceDetail":"Scenic and sightseeing transportation, land (NAICS 4871) is classified under Scenic and sightseeing transportation (NAICS 487) in the 2022 NAICS hierarchy.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."},{"id":"industry-hierarchy:4872:487","layer":"measurement","relationshipType":"industry_hierarchy","relationshipLabel":"NAICS parent classification","fromId":"industry:4872","fromKind":"industry","fromLabel":"Scenic and sightseeing transportation, water","fromHref":"/industries/4872","toId":"industry:487","toKind":"industry","toLabel":"Scenic and sightseeing transportation","toHref":"/industries/487","evidenceLabel":"2022 NAICS hierarchy","evidenceDetail":"Scenic and sightseeing transportation, water (NAICS 4872) is classified under Scenic and sightseeing transportation (NAICS 487) in the 2022 NAICS hierarchy.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."},{"id":"industry-hierarchy:4879:487","layer":"measurement","relationshipType":"industry_hierarchy","relationshipLabel":"NAICS parent classification","fromId":"industry:4879","fromKind":"industry","fromLabel":"Scenic and sightseeing transportation, other","fromHref":"/industries/4879","toId":"industry:487","toKind":"industry","toLabel":"Scenic and sightseeing transportation","toHref":"/industries/487","evidenceLabel":"2022 NAICS hierarchy","evidenceDetail":"Scenic and sightseeing transportation, other (NAICS 4879) is classified under Scenic and sightseeing transportation (NAICS 487) in the 2022 NAICS hierarchy.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."},{"id":"industry-source:48-49:census-ecnsize-concentration-2022","layer":"measurement","relationshipType":"industry_source","relationshipLabel":"Economic Census source","fromId":"industry:48-49","fromKind":"industry","fromLabel":"Transportation and warehousing","fromHref":"/industries/48-49","toId":"source:census-ecnsize-concentration-2022","toKind":"source","toLabel":"2022 Economic Census Concentration of Largest Firms","toHref":"/sources/census-ecnsize-concentration-2022","evidenceLabel":"U.S. Census Bureau","evidenceDetail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 48-49.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."},{"id":"industry-source:487:census-ecnsize-concentration-2022","layer":"measurement","relationshipType":"industry_source","relationshipLabel":"Economic Census source","fromId":"industry:487","fromKind":"industry","fromLabel":"Scenic and sightseeing transportation","fromHref":"/industries/487","toId":"source:census-ecnsize-concentration-2022","toKind":"source","toLabel":"2022 Economic Census Concentration of Largest Firms","toHref":"/sources/census-ecnsize-concentration-2022","evidenceLabel":"U.S. Census Bureau","evidenceDetail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 487.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."},{"id":"industry-source:4871:census-ecnsize-concentration-2022","layer":"measurement","relationshipType":"industry_source","relationshipLabel":"Economic Census source","fromId":"industry:4871","fromKind":"industry","fromLabel":"Scenic and sightseeing transportation, land","fromHref":"/industries/4871","toId":"source:census-ecnsize-concentration-2022","toKind":"source","toLabel":"2022 Economic Census Concentration of Largest Firms","toHref":"/sources/census-ecnsize-concentration-2022","evidenceLabel":"U.S. Census Bureau","evidenceDetail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 4871.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."},{"id":"industry-source:4872:census-ecnsize-concentration-2022","layer":"measurement","relationshipType":"industry_source","relationshipLabel":"Economic Census source","fromId":"industry:4872","fromKind":"industry","fromLabel":"Scenic and sightseeing transportation, water","fromHref":"/industries/4872","toId":"source:census-ecnsize-concentration-2022","toKind":"source","toLabel":"2022 Economic Census Concentration of Largest Firms","toHref":"/sources/census-ecnsize-concentration-2022","evidenceLabel":"U.S. Census Bureau","evidenceDetail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 4872.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."},{"id":"industry-source:4879:census-ecnsize-concentration-2022","layer":"measurement","relationshipType":"industry_source","relationshipLabel":"Economic Census source","fromId":"industry:4879","fromKind":"industry","fromLabel":"Scenic and sightseeing transportation, other","fromHref":"/industries/4879","toId":"source:census-ecnsize-concentration-2022","toKind":"source","toLabel":"2022 Economic Census Concentration of Largest Firms","toHref":"/sources/census-ecnsize-concentration-2022","evidenceLabel":"U.S. Census Bureau","evidenceDetail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 4879.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."}]}