NOTICE: As of 2/2/2026, Morningstar has completed the acquisition of the Center for Research in Security Prices (CRSP). Learn more >>

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CRSP is recognized as the leading provider of research-quality historical market and returns data. CRSP Research Data Products is trusted by more than 600 institutions across 35 countries. Our subscribers include leading financial firms, government agencies, and respected research universities that rely on CRSP Research Data Products for serious analysis and strategic decision-making.

CRSP Data Supports:

  • Academic researchers who publish in peer-reviewed journals and require transparent, historically accurate data that meets the highest standards of scholarly scrutiny.
  • Financial analysts who depend on precise, structured data for back-testing, risk modeling, and market simulation.
  • Regulators and policymakers who use CRSP datasets as the foundation for financial and economic research that guides policy.
CRSP pioneered research-quality stock market data more than 65 years ago. Today, that legacy continues in support of serious institutions that rely on accuracy, transparency, and long-term insight.

PERMNO® is CRSP’s proprietary, permanent identifier used to track U.S.-listed equities over time and across corporate restructurings. Unlike ticker symbols, which can change, each PERMNO remains fixed for the life of a security. It accounts for name changes, mergers, acquisitions, spin-offs, and other business events and allows researchers and analysts to follow securities with historical continuity and accuracy. Learn more>>

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

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CRSPRDP News & Updates

CRSP Count™ Quarterly Update – December 2025

Using CRSP Market Indexes Methodology, CRSP Count™ tracks changes in the number of securities by market cap segments - Mega, Mid, Small and Micro - through time. [...]

Morningstar Completes Acquisition of CRSP and Extends Relationship with Vanguard

The CRSP integration unites two trusted sources of market insight, reinforcing a shared commitment to transparency, quality, and investor-focused solutions and solidifying Morningstar’s position as a top-tier global index provider. [...]

CRSP Market Indexes US Market Update – Q4 2025

Notable items with this release include:
- December returns were fairly flat for Cap and Style Indexes
- Value outperformed Growth across the board in Q4, however, [...]
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