page_title: List of S&P 600 companies
section_title: Investing
hierarchical_section_title: List of S&P 600 companies / Investing
caption_attribution_description: English: 2018 Year to Date SPMD Line Chart as of 19, Sep 18 with Market Cap
context_page_description: The S&P 600 is an index of small-cap company stocks created by Standard & Poor's. The index is weighted by float-adjusted market capitalization, where public shares are only taken into consideration, excluding promoters' holding, government holding, strategic holding, and other locked-in shares. Periodically, S&P Dow Jones Indices reflects the changes of the S&P 1000 in response to company takeover, or updating the index based on company market capitalization. The information of the 1003 constituents is extracted from Capital IQ, which is an online service by S&P Global that provides real-time financial, technical, and industry data to investment firms, universities, and researchers. Capital IQ offers various features including credit risk analytics, data on public and private company financials, mergers & acquisitions, Excel plug-in and pre-built templates, chart builder, credit ratings, and shareholder analysis.
context_section_description: The following exchange-traded funds (ETFs) attempt to track this index and sub-indexes:
  SPDR Portfolio Mid Cap ETF (NYSE Arca: SPMD)
  Established by State Street Global Advisors in November 8, 2005, SPDR Portfolio Mid Cap ETF is an exchange traded fund that aims to track the performance of S&P 1000 index. As of September 20, 2018, Industrials (16.65%), Financials (16.65%), and Information Technology (16.16%) are the top 3 majority holdings by sector. The top 3 holdings are WellCare Health Plans (0.55%), Fortinet (0.47%), and Jack Henry & Associates (0.46%) respectively.
caption: 2018 year to date SPMD line chart as of September 19, 2018 with market cap
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