NOTICE: As of 2/2/2026, Morningstar has completed the acquisition of the Center for Research in Security Prices (CRSP). Learn more >>
NOTICE: As of 2/2/2026, Morningstar has completed the acquisition of the Center for Research in Security Prices (CRSP). Learn more >>
CRSP US Stock Databases data is delivered via the Cloud utilizing MOVEit Managed File Transfer cloud software.
Third party access:
CRSP’s permanent identifiers allow for clean and accurate backtesting, research utilizing time-series and corporate event data, performance measurement, benchmarking, and securities analysis.
Flat File Format 2.0 (CIZ) User Guide
User guide for Flat File Format 2.0 (CIZ) files with detailed table descriptions. Files are available in SAS, ASCII & R formats
A guide to the Flat File Format 2.0 (CIZ) metadata files which include more details about flags, coverage, calendars and CIZ to SIZ mapping
A detailed guide of calculations and methodologies for Flat File Format 2.0 (CIZ) files
Discover supported platforms for accessing CRSP data, including our Windows interface, flat file formats, command line tools and programming libraries, and several third-party partnerships
Monthly, quarterly, & annual release notes
A guide for transitioning from Flat File Format 1.0 (SIZ) to Flat File Format 2.0 (CIZ) with general and detailed mappings
User guide for legacy (FIZ) Stock & Index database including data definitions, CRSP calculations, index methodologies, code definitions and database structures
User guide for Flat File Format 1.0 (SIZ) files with detailed table descriptions. Files are available in SAS, ASCII & R formats
Additional notes and FAQ about this product
