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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 – Consultation Results: Eligible US Exchanges

Following a consultation on exchange eligibility, CRSP Market Indexes will be adding the Texas Stock Exchange (TXSE) as an approved US listing venue across all indexes. TXSE will be eligible [...]

July 2026 CRSP Market Indexes Methodology Guide Updates

The July 2026 CRSP Market Indexes Methodology Guide is now available at crsp.org/indexes/crsp-market-indexes-methodology. [...]

Introducing the New Home for CRSP Research Data Products

As of June 30, 2026, all CRSP Research Data Products content previously available on crsp.org has been migrated to the new Data section on the Morningstar website. This transition reflects [...]

Big IPO Energy: Making Room for Mega IPOs

From Eligibility to Inclusion: Bringing Clarity to the Mega IPO Debate The debate around mega IPO entry into broad market index families has highlighted how easily key distinctions between index [...]

CME Group and Morningstar Announce Exclusive Index Derivatives Licensing Agreement

Morningstar, a leading provider of independent investment insights, along with CME Group, the world's leading derivatives marketplace, today announced that they have entered into a multi-year licensing agreement for CME [...]

CRSP Market Indexes Notification – Float-Adjusted Capitalization Values for June 2026 Ranking

Per the Changes to Float Shares Investability Screen announcement on February 25, 2026, CRSP now includes a float-adjusted market capitalization test as part of the Float Shares Investability Screen for [...]

CRSP Market Indexes Breakpoints for Q2 2026

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

Vanguard to Update Names of U.S. Equity Index Funds Tracking Morningstar Indexes

VALLEY FORGE, PA (April 29, 2026)—Following Morningstar’s rebranding of the CRSP Market Indexes to Morningstar Indexes, Vanguard today announced upcoming changes to the names of multiple Vanguard U.S. equity index [...]

Morningstar Reaches New Milestone in the CRSP Acquisition, Rebranding CRSP Market Indexes to Morningstar Indexes

The rebrand of the CRSP indexes, with over $3 trillion in AUM benchmarked, solidifies Morningstar’s position as one of the top tier index providers and is an important new milestone [...]
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