tax inspector investigating financial documents through magnifying glass, forensic accounting or financial forensics, inspecting offshore company financial papers, documents and reports.

Transparency in the U.S. over-the-counter (OTC) equity market is getting a boost, with the Financial Industry RegulatoryAuthority (FINRA) now publishing additional market data.

FINRA announced on Monday that it has begun publishing data on OTC trading that takes place outside of alternative trading systems (ATS).

The data, published for free on FINRA’s website, includes monthly aggregate block-size trading data for OTC trades (delayed by a month) and aggregate non-ATS volume for each firm.

“Today marks another important step in our longstanding effort to enhance market transparency,” said Thomas Gira, FINRA’s executive vice president of market regulation and transparency services.

“Publication of the additional data will be beneficial to securities firms and the general public, providing greater visibility into OTC trading activities,” he added.