18-Sep-2026
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Invests in stocks in the S&P MidCap 400 Index representing 400 medium-size U.S. companies. Focuses on closely tracking the index s return which is considered a gauge of overall U.S. mid-cap stock returns. Offers high potential for investment growth; share value rises and falls more sharply than that of funds holding bonds. More appropriate for long-term goals where your money s growth is essential.
Vanguard S&P Mid-Cap 400 ETF trades on the ARCA stock market under the symbol IVOO.
As of September 18, 2026, IVOO stock price declined to $123.96 with 51,283 million shares trading.
IVOO has a beta of 0.72, meaning it tends to be less sensitive to market movements. IVOO has a correlation of 0.42 to the broad based SPY ETF.
IVOO has a market cap of $3.75 billion. This is considered a Mid Cap stock.
In the last 3 years, IVOO traded as high as $133.14 and as low as $78.54.
IVOO has underperformed the market in the last year with a price return of +11.7% while the SPY ETF gained +16.8%. IVOO has also underperformed the stock market ETF in the last 3 month and 2 week periods returning -3.3% and -3.5%, respectively, while the SPY returned +2.3% and -0.9%, respectively.
IVOO support price is $123.30 and resistance is $125.30 (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 IVOO shares will trade within this expected range on the day.
