Near-term / Public data infrastructure
Publish stable transaction identifiers
Create durable public identifiers that connect HSR notification, clearance, Second Request, public challenge, remedy, abandonment, and later outcome records without disclosing confidential filing content.Source records1report custody
Linked markets0analytical context
Research themes1publication taxonomy
Evidence needs5future verification inputs
The source boundary stays visible from analysis to proposed action.
The Federal Merger Review Pipeline, 2016-2025
Federal merger oversight needs a durable public evidence chain from notification through review, agency action, remedy, abandonment, and later market outcomes while protecting confidential filing material and keeping procedure distinct from competitive effect.
- Intended audience
- FTC, DOJ, Congress, state attorneys general, and competition researchers
- Policy priority
- Near-term
- Instrument
- Public data infrastructure
- Publication
- AR-RB-2026-05 / version 1.0
- Canonical citation
- Antitrust Radar Research Team. (2026, July 20). The Federal Merger Review Pipeline, 2016-2025: Notification volume swung widely while annual Second Request rates stayed between 1.6% and 3.0%. Competition Research Briefs, AR-RB-2026-05 (Version 1.0). Antitrust Radar. https://antitrustradar.org/reports/federal-merger-review-2016-2025
Inputs required to investigate the recommendation and its effects.
- 01Stable public transaction and proceeding identifiers
- 02Industry, value, type, agency, timing, and stage fields
- 03Below-threshold and serial-acquisition research
- 04Challenge, remedy, abandonment, and clearance outcomes
- 05Post-transaction price, quality, entry, employment, and innovation evidence