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CRSP Research Data Products are relied on by more than 600 subscribers, including major financial firms, government entities and leading research universities across 35 countries. CRSP data supports:

Academics whose research and publications must withstand rigorous analysis for accuracy
Quantitative analysts in the commercial market who perform backtesting and modeling calculations.
Regulators and policy makers, requiring complete data sets as the basis for financial and economic research.

PERMNO® is the proprietary reference key for all securities data maintained by CRSP. PERMNOs are permanent identifiers for all US-listed equities that are consistent through time over the life of each security, accounting for all types of corporate actions.

Important Notice: CRSP US Stock & Indexes Databases Flat File Format 2.0 (CIZ)

As communicated previously, CRSP has migrated to a new back office and introduced the Stock & Indexes Flat File Format 2.0 (CIZ) in the summer of 2022. Subscribers are required to migrate to CIZ, as the December 2024 data which was released in January 2025, was the last release of datasets produced in the Legacy (FIZ) and Flat File Format 1.0 (SIZ) formats.

Additional reference materials and resources can be found in the Documents & Resources section of the CRSP US Stock Databases landing page.

CRSP Research Data Products

CRSP US Stock Databases

CRSP Historical Indexes

CRSP/Compustat Merged Database

CRSP Survivor-Bias-Free US Mutual Fund Database

CRSP US Treasury Database

CRSP/Ziman Real Estate Database

CRSP10

CRSP Cap-Based Portfolio Indexes

CRSPMI Intraday Database

CRSPMI Historical Database

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CRSPRDP News & Updates

CRSP Has Moved!

As of Monday, April 7, 2025, CRSP offices are now located at: 500 W Madison St, Ste 2900 Chicago, IL 60661 [...]

April 7, 2025

Announcements, Market Indexes, Research Data Products

Building a Better Market Index

How Academic Research Shaped an Industry Standard | CRSP’s Market Indexes were built on a foundation of rigorous research—now, Chicago Booth Magazine is telling that story. [...]