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

It’s Nvidia’s Stock Market. You Choose How to Live in It

  • News

“In the boom years of the 1950s, the 10 biggest companies, including AT&T, DuPont, and General Motors, regularly exceeded 30% of the value of all U.S. stocks. In July 1955, GM alone—up 78% over the previous 12 months—amounted to 6.8% of the value of the entire U.S. stock market, according to the Center for Research in Security Prices.”

Read the full article at the Wall Street Journal. 

News & Updates

CRSP Count™ Quarterly Update – June 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 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 [...]
Scroll to top