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United StatesMID
S&P MidCap 400
Region
United States
Exchange
Ticker
MID
About S&P MidCap 400
The S&P MidCap 400 covers mid-sized US companies that sit below the S&P 500 but above the S&P 600 Small Cap index. Mid-cap stocks often offer a balance of growth potential and stability, making this index important for diversified portfolio construction.
S&P MidCap 400 Price Chart
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Components
400 mid-cap US companies with market caps typically between $5.2 billion and $14.6 billion. Selected by committee for sector representation and financial viability.
Trading Hours
Regular session: 09:30–16:00 ET (Mon–Fri).
Fact Sheet
Launched in 1991 by S&P Dow Jones Indices. Free-float market-cap weighted. Rebalanced quarterly.
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