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

Linkedin-in

Request Subscription Information

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 Access

The December 2024 data cut that was released in January 2025 was the last release of files for CRSPAccess.

Questions?

Please contact your support representative at support@crsp.org with questions.

News & Updates

CRSP Market Indexes Notification – Changes to Index Governance

Beginning July 1, 2026, governance of the CRSP Market Indexes will transition to the standard Morningstar Indexes Governance framework, replacing the governance authorities and procedures currently outlined in the CRSP [...]

CRSP Market Indexes Breakpoints for Q1 2026

CRSP Market Indexes (CRSPMI) announces the market cap breakpoints and effective ranking dates for its March 2026 quarterly index rebalancing. [...]

CRSP Has Moved to Morningstar Headquarters Office

As of Monday, February 2, 2026, CRSP offices are now located at: 22 W. Washington St., Chicago, IL US Phone: +1 312-384-3735 Please update our contact information in your systems. [...]

CRSP Market Indexes Notification – Changes to Float Shares Investability Screen

Float Shares Investability Screen will be expanded to include a float-adjusted market capitalization test for adding or dropping a security. Below is the table outlining the existing and the new [...]

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. [...]

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, [...]

2026 CRSP Market Indexes Methodology Guide

The 2026 CRSP Market Indexes Methodology Guide is now available. [...]

CRSP Market Indexes Breakpoints for Q4 2025

CRSP Market Indexes (CRSPMI) announces the market cap breakpoints and effective ranking dates for its December 2025 quarterly index rebalancing. [...]

What’s New in CRSP’s September Ranking?

We’ve updated our methodology to exclude Passive Foreign Investment Companies (PFICs) from our CRSP Market Indexes—helping mitigate tax implications and improve investor outcomes. [...]
Scroll to top