Stop hiding concentration inside aggregates

Separate named firms from Other rows wherever disclosure rules allow, and label residual categories that cannot support HHI.

Source records2report custody

Linked markets2analytical context

Research themes1publication taxonomy

Evidence needs4future verification inputs

Recommendation evidence chain

The source boundary stays visible from analysis to proposed action.

02Evidence custody2 sources / 2 marketsLinked context, not independent endorsement

03Normative recommendationAR-PA-008Data disclosure

04Implementation evidenceNot assessedNo adoption or impact inference

Source report position

Data gaps are not a footnote; they are the place where public accountability breaks down and private market power becomes harder to challenge.

Intended audience: Data publishers, oversight committees, and public advocates
Policy priority: Immediate
Instrument: Data disclosure
Publication: AR-DN-2026-01 / version 1.0
Canonical citation: 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

Evidence still needed