Skip to main content

For updates and guidance related to COVID-19 / Coronavirus, click here.

Tick Size Pilot File Updates

FINRA has updated definitions to the Effective Date and Deleted Date fields in the Pilot Securities file and Pilot Changes file, to clarify how these dates will be populated when a security moves from a Tick Size Pilot Test Group to the Control Group or from one listing exchange to another. The updated definitions are available on FINRA’s Daily List of Pilot Securities webpage.