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Building a Better Market Index

How Academic Research Shaped an Industry Standard

CRSP’s Market Indexes were built on a foundation of rigorous research—now, Chicago Booth Magazine is telling that story.

Discover how Booth faculty’s groundbreaking work led to the creation of CRSP’s investable indexes, culminating in the 2010 launch of the CRSP US Total Market Index.

Read the full article. 

News & Updates

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 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. [...]

CRSP Mentioned in 1929: Inside the Greatest Crash in Wall Street History – And How It Shattered a Nation

CRSP is pleased to be recognized in Andrew Ross Sorkin’s new book, 1929: Inside the Greatest Crash in Wall Street History – And How It Shattered a Nation. [...]

What does it really mean to be passive in today’s U.S. equity market?

As U.S. equity markets evolve, so should the way they’re measured. In an article published by ETF.com, CRSP explores why traditional, fixed-constituent benchmarks may no longer capture the full dynamics [...]
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