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CRSP and OptionMetrics Announce Collaboration

CRSP is excited to announce our collaboration with OptionMetrics, a leader in options data and analytics. This agreement enhances academic research by providing seamless integration of CRSP U.S. equities data with OptionMetrics options data, offering new possibilities for comprehensive market analysis.

Click here to view the full press release.

News & Updates

CRSP US Mid-Cap Index Outperforms Peers

Why do some mid- and small-cap ETFs outperform others? A recent article from ETF.com highlights how benchmark index construction and methodology—especially market cap definitions—can significantly impact ETF performance. [...]

CRSP Market Indexes- PFICs to be Removed from Index Eligibility

Passive Foreign Investment Companies (PFICs), as defined by the IRS, will no longer be eligible for inclusion in the CRSP US Market Indexes. [...]

CRSP Market Indexes US Market Update – Q2 2025

Notable items with this release include: - Markets broadly rallied throughout Q2, with every Cap and Style Index posting gains over the previous 3 months. - Growth largely outperformed Value [...]

Comment on CRSP CIZ Monthly Return

We are delighted to invite Ph.D. students, faculty members, and friends to a WRDS webinar on the newly released CRSP CIZ (Version 2) data format. [...]

CRSP Market Indexes Breakpoints for Q2 2025

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

CRSP Count™ Quarterly Update – March 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. [...]

WRDS Research Webinar Series – Flat File Format 2.0 (CIZ)

We are delighted to invite Ph.D. students, faculty members, and friends to a WRDS webinar on the newly released CRSP CIZ (Version 2) data format. [...]

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

As communicated previously, CRSP is migrating to a new back office. This requires that subscribers migrate to the Stock & Indexes Flat File Format 2.0 (CIZ), which was made available [...]

Market Timing and Managerial Talent

In “Market Timing and Managerial Talent”, Keming Li’s exploration of how firms’ equity issuance strategies relate to executive talent is supported by CRSP US Stock Data. The study sheds light [...]

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