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Morningstar® Indexes
Connecting the science and art of indexing.
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Morningstar® Style Indexes
The Morningstar Style Index family consists of 16 indexes that track the U.S. market by capitalization and investment style using a comprehensive, rules-based, 10-factor methodology.
Morningstar Style Indexes are based on the same methodology as the Morningstar Style Box™, providing a cohesive, integrated framework that can be seamlessly used at all stages of the investment process.

Constructed without gaps or overlap, Morningstar Style Indexes enable investors to accurately track the behavior and characteristics of each market segment. Their non-overlapping and comprehensive structure ensures that each index can be used as a discrete building block for efficient portfolio construction.

Indexes available:
Broad Market Index
Targets 97% market capitalization coverage
Capitalization Indexes
Large Cap: 70% market capitalization
Mid Cap: 20% market capitalization
Small Cap: 7% market capitalization
Defined by a 10-factor model. Over 36-month rolling cycles, each index represents 1/3 of the overall market.
Composite Style Indexes
Style Indexes
The nine segments of the well-known Style Box are specified by style and market capitalization.
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