{"license":"https://creativecommons.org/licenses/by/4.0/","dataset":"reports","count":1,"filters":{"report":"public-data-gaps","reportMatched":true,"reportId":"rep-public-data-gaps","reportSlug":"public-data-gaps","reportTitle":"Where Public Market-Share Data Runs Out"},"rows":[{"id":"rep-public-data-gaps","slug":"public-data-gaps","title":"Where Public Market-Share Data Runs Out","subtitle":"Why incomplete profiles are part of the product","summary":"An open report explaining why the observatory sometimes withholds HHI even when public facts indicate concentration.","body":"Incomplete profiles are not failures of the platform; they are a core credibility feature. The airline profile shows a high-quality BTS source but withholds HHI because the public table includes an aggregated Other category. The PBM profile uses FTC public findings on top-three and top-six concentration but withholds HHI because individual public shares are not provided in the press-release record. The observatory publishes what is known, what is missing, and what source would be needed next.","coverImageUrl":null,"publishedAt":"2026-05-16","relatedMarketIds":["mkt-airlines","mkt-pbm"],"sourceIds":["bts-transtats-2026","ftc-pbm-interim-2024"],"sourceBasis":"BTS public airline market-share table and FTC PBM interim staff report materials.","tableOfContents":["Why HHI is withheld","Examples from airlines and PBMs","What better source coverage would add"],"preview":"A transparency note on incomplete data and why the observatory never fills gaps with invented shares.","publicationType":"data_note","seriesTitle":"Public Data Notes","seriesNumber":"AR-DN-2026-01","authorName":"Antitrust Radar Research Team","version":"1.0","updatedAt":"2026-05-16","publicationStatus":"current","revisionNote":"Initial public edition.","canonicalCitation":"Antitrust Radar Research Team. (2026, May 16). Where Public Market-Share Data Runs Out: Why incomplete profiles are part of the product. Public Data Notes, AR-DN-2026-01 (Version 1.0). Antitrust Radar. https://antitrustradar.org/reports/public-data-gaps","citationDownloads":{"bibtex":"/reports/public-data-gaps/citation/bibtex","ris":"/reports/public-data-gaps/citation/ris"},"sourceProfileHrefs":["/sources/bts-transtats-2026","/sources/ftc-pbm-interim-2024"]}]}