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Think inside the box

With Morningstar® Broad Style IndexesSM

A more flexible, intuitive framework for style investing and analysis

Designed to accurately represent the size and style dimensions of the U.S. equity market in alignment with the Morningstar Style Box™, the Morningstar® Broad Style IndexesSM are a natural complement for informing style-related investment decisions. Index methodology targets broad market segments to accurately and consistently reflect the opportunity set for style investors.

Intelligent benchmarking

Methodology targets broad segments consistently over time, facilitating better benchmarking of active strategies.

Aligned with the Morningstar Style Box

A natural complement for informing style-related investment decisions, resulting in a consistent frame of reference and holistic measurement of style.

Exceptional value

Advancing Morningstar’s goal of lowering the cost of benchmarking and empowering investor success.

Stay on top of style trends with the Morningstar Quarterly Style Monitor

Morningstar Broad Style Indexes

The Morningstar Broad Style Index family consists of 17 indexes that track the U. S. equity market by capitalization and investment style. Read the Methodology.



Five indexes represent size segments based on their coverage of the U. S. equity market:

Large Cap

Large-Mid

Mid Cap

Small-Mid

Small Cap Extended



Twelve indexes represent style segments within each of the size segments:

Large Cap
Broad Growth

Large Cap
Broad Value

Large-Mid
Broad Growth

Large-Mid
Broad Value

Mid Cap
Broad Growth

Mid Cap
Broad Value

Small-Mid
Broad Growth

Small-Mid
Broad Value

Small Cap
Broad Growth Extended

Small Cap
Broad Value Extended

Market
Value

Market
Growth

Forever in Style: Expanding Morningstar’s Style Index Suite

In response to the ongoing evolution of style investing, Morningstar launched a suite of style indexes to complement its original family. The Morningstar Broad Style Indexes are aligned with the Morningstar Style Box by design and serve a wide range of investor needs.

About the Morningstar Style Box

The Morningstar Style Box has become the industry standard for categorizing and tracking managed investment portfolios. It describes securities in terms of their relative size and value-growth orientation in an intuitive, visual tool. It is based on a robust methodology that includes forward-looking and historical components and 10 different factors to measure value-growth orientation.

Think inside the box with Morningstar Broad Style Indexes.

Morningstar Indexes - Explore our complete suite of indexes to support all your investment decisions.