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

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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 of today’s market.

By examining decades of market evolution and the impact of concentration, CRSP highlights how its market cap percentiles methodology provides a more consistent and adaptive measure of true market exposure.

Read the full article: The Merits of Rethinking Passive U.S. Equity Investing

News & Updates

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 [...]

CRSP Market Indexes Notification – Index Name Change Notice

Morningstar Indexes is changing the names of the CRSP Market Indexes. These changes will align the individual index names with the standard Morningstar naming convention. Morningstar will implement the name [...]

April 2026 CRSP Market Indexes Methodology Guide Updates

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

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. [...]

Morningstar Completes Acquisition of CRSP and Extends Relationship with Vanguard

The CRSP integration unites two trusted sources of market insight, reinforcing a shared commitment to transparency, quality, and investor-focused solutions and solidifying Morningstar’s position as a top-tier global index provider. [...]
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