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The SPDR S&P MidCap 400 ETF before expenses seeks to generally correspond to the price and yield performance of the S&P MidCap 400 IndexTM. Our approach is designed to provide portfolios with low portfolio turnover accurate tracking and lower costs.
SPDR S&P Midcap 400 ETF Trust trades on the ARCA stock market under the symbol MDY.
As of January 21, 2026, MDY stock price climbed to $640.33 with 359,951 million shares trading.
MDY has a beta of 0.91, meaning it tends to be less sensitive to market movements. MDY has a correlation of 0.78 to the broad based SPY ETF.
MDY has a market cap of $25.22 billion. This is considered a Large Cap stock.
In the last 3 years, MDY traded as high as $644.19 and as low as $424.22.
MDY has underperformed the market in the last year with a return of +9.5%, while SPY returned +15.6%. This shows that you would have done better investing in the overall market (through SPY) over the last year than in MDY shares. However, MDY has outperformed the market in the last 3 month and 2 week periods, returning +7.8% and +1.9%, while SPY returned +2.1% and -1.2%, respectively. This indicates MDY has been having a stronger performance recently.
MDY support price is $626.29 and resistance is $636.06 (based on 1 day standard deviation move). This means that using the most recent 20 day stock volatility and applying a one standard deviation move around the stock's closing price, stastically there is a 67% probability that MDY shares will trade within this expected range on the day.
