Introduced in 2003, S&P 900 is a broad market portfolio representing the large-cap and mid-cap of the U.S. equity market. This index was calculated internally for two years prior. Occasionally referred to as the large/mid-cap index, this combination addresses the needs of investors who want to allocate assets to a broader large cap universe, beyond the S&P 500. S&P 500 makes up approximately 92% of this index and S&P MidCap 400 makes up the remaining 8%. S&P 900 is one of the composite index series created with core indices as building blocks to develop tailored portfolio strategies.
Index constituents exhibit the following characteristics:
Underlying Indices – S&P 500 and S&P MidCap 400
Weighting – Market capitalization
Public Float – At least 50%
Reconstitution – As needed basis
Index Governance and Policy
This index is maintained by the S&P Index Committee, whose members include Standard & Poor's economists and index analysts. It follows a set of published guidelines and policies that provide the transparent methodologies used to maintain the index.
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