SEC Seeks Public Input on Consolidated Audit Trail Review

The SEC announced Thursday it is soliciting public comment on whether to conduct a comprehensive review of the Consolidated Audit Trail, the sweeping trading database that has generated persistent industry controversy since its inception roughly a decade ago. The move reopens a long-running dispute over the scope, cost, and data security architecture of one of the most expansive market surveillance tools ever constructed. CAT was designed to give regulators a unified, timestamped record of all orders and trades across U.S. equity and options markets, but its rollout has drawn sustained pushback from broker-dealers and exchanges over compliance costs and the security risks of centralizing sensitive investor data at scale. The public comment process signals the SEC is at minimum open to structural modifications, though the nature and timeline of any formal review remain undefined. Market participants should monitor whether the comment period surfaces pressure to narrow data collection requirements, revise cost-sharing arrangements among industry participants, or address longstanding cybersecurity objections that have dogged the system since its design phase.