{"license":"https://creativecommons.org/licenses/by/4.0/","dataset":"atlas","mode":"workspace","updatedThrough":"2026-08-15","citation":"Antitrust Radar, Atlas Research Workspace: Housing Competition Needs Local Ownership Data; Request for Information on Serial Acquisitions and Roll-Up Strategies (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":["report:rep-housing-data-gap","source:ftc-doj-rollups-2024"],"itemsMatched":true,"requestedItems":["report:rep-housing-data-gap","source:ftc-doj-rollups-2024"],"truncated":false,"unmatchedItems":[],"layer":"all","layerMatched":true,"view":"map"},"diagnostics":{"bridgeDependenceRate":0,"confidenceCounts":{"bounded":1,"high":0,"low":0,"medium":0},"connectedPairRate":1,"directPairRate":1,"layerCounts":[{"count":0,"layer":"measurement"},{"count":0,"layer":"organization"},{"count":0,"layer":"enforcement"},{"count":1,"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":"report:rep-housing-data-gap","kind":"report","label":"Housing Competition Needs Local Ownership Data","shortLabel":"Housing Competition Nee...","description":"An open brief explaining why housing affordability and supply stress require local competition data before HHI can be responsibly reported.","href":"/reports/housing-competition-data-gap","metricLabel":"Evidence sources","metricValue":"4","detail":"1 linked market","status":"published","year":2026,"color":"#6366f1","searchText":"housing competition needs local ownership data source-backed housing profile note an open brief explaining why housing affordability and supply stress require local competition data before hhi can be responsibly reported. explains why the housing profile reports public stress signals while withholding hhi pending local firm-level ownership and rental market-share data. harvard jchs renter cost-burden data, freddie mac supply-shortage estimate, gao selected single-family rental investor ownership data, and ftc/doj roll-up inquiry materials.","connectionCount":7},{"id":"source:ftc-doj-rollups-2024","kind":"source","label":"Request for Information on Serial Acquisitions and Roll-Up Strategies","shortLabel":"Federal Trade Commiss...","description":"FTC and DOJ request for information on serial acquisitions and roll-up strategies including housing markets.","href":"/sources/ftc-doj-rollups-2024","metricLabel":"Access date","metricValue":"2026-06-21","detail":"Federal Trade Commission and Department of Justice","status":"agency report","year":2026,"color":"#64748b","searchText":"ftc-doj-rollups-2024 request for information on serial acquisitions and roll-up strategies federal trade commission and department of justice ftc and doj request for information on serial acquisitions and roll-up strategies including housing markets. federal trade commission and department of justice, request for information on corporate consolidation through serial acquisitions and roll-up strategies, may 2024. agency_report","connectionCount":1}],"connectorNodes":[],"pairs":[{"id":"report:rep-housing-data-gap--source:ftc-doj-rollups-2024","leftId":"report:rep-housing-data-gap","leftLabel":"Housing Competition Needs Local Ownership Data","rightId":"source:ftc-doj-rollups-2024","rightLabel":"Request for Information on Serial Acquisitions and Roll-Up Strategies","status":"direct","directEdgeCount":1,"shortestHopCount":1,"alternativeShortestPathCount":0,"primaryPathNodeIds":["report:rep-housing-data-gap","source:ftc-doj-rollups-2024"],"primaryPathEdgeIds":["report-source:rep-housing-data-gap:ftc-doj-rollups-2024"]}],"sources":[{"edgeCount":1,"href":"/sources/ftc-doj-rollups-2024","id":"ftc-doj-rollups-2024","label":"Request for Information on Serial Acquisitions and Roll-Up Strategies","sourceUrl":"https://www.ftc.gov/system/files/ftc_gov/pdf/Serial%20Acquisition%20RFI_5.22.24.pdf"}],"rows":[{"id":"report-source:rep-housing-data-gap:ftc-doj-rollups-2024","layer":"research","relationshipType":"report_source","relationshipLabel":"Declared publication source","fromId":"report:rep-housing-data-gap","fromKind":"report","fromLabel":"Housing Competition Needs Local Ownership Data","fromHref":"/reports/housing-competition-data-gap","toId":"source:ftc-doj-rollups-2024","toKind":"source","toLabel":"Request for Information on Serial Acquisitions and Roll-Up Strategies","toHref":"/sources/ftc-doj-rollups-2024","evidenceLabel":"Federal Trade Commission and Department of Justice","evidenceDetail":"Request for Information on Serial Acquisitions and Roll-Up Strategies appears in the report's encoded source basis.","sourceId":"ftc-doj-rollups-2024","sourceUrl":"https://www.ftc.gov/system/files/ftc_gov/pdf/Serial%20Acquisition%20RFI_5.22.24.pdf","confidenceLevel":"bounded","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"A source edge records the public evidence basis declared by the publication and does not erase the source's limitations."}]}