- CUSIP
- 921910782
- Issuer
- Vanguard
- Inception Date
- Apr 3, 2008
- Region
- North America (U.S.)
- Category
- Large Cap Growth Equities
- Min. Investment
- $5,000,000
- Distribution Policy
- Distributing
- Asset Class
- Equity
- Asset Class Size
- Large-Cap
- Asset Class Style
- Growth
Share Price Chart
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Performance
VMGAX Performance Chart
Vanguard Mega Cap Growth Index Fund Institutional Shares (VMGAX) is up 7.4% since the beginning of the year. VMGAX is currently trading at $880 per share. Investors who bought $1,000 worth of VMGAX shares 5 years ago would now be looking at an investment worth $2,032.
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Returns By Period
Vanguard Mega Cap Growth Index Fund Institutional Shares (VMGAX) has returned 7.42% so far this year and 27.59% over the past 12 months. Looking at the last ten years, VMGAX has achieved an annualized return of 19.11%, outperforming the S&P 500 Index benchmark, which averaged 13.88% per year.
Vanguard Mega Cap Growth Index Fund Institutional Shares
- 1D
- 1.81%
- 1M
- -0.41%
- YTD
- 7.42%
- 6M
- 6.82%
- 1Y
- 27.59%
- 3Y*
- 24.48%
- 5Y*
- 15.23%
- 10Y*
- 19.11%
Benchmark (S&P 500 Index)
- 1D
- -0.37%
- 1M
- -0.01%
- YTD
- 9.16%
- 6M
- 8.64%
- 1Y
- 25.22%
- 3Y*
- 19.78%
- 5Y*
- 11.99%
- 10Y*
- 13.88%
VMGAX Monthly Returns History
Based on dividend-adjusted daily data since Dec 27, 2007, VMGAX's average daily return is +0.06%, while the average monthly return is +1.20%. At this rate, an investment would double in approximately 4.8 years.
Historically, 63% of months were positive and 37% were negative. The best month was Apr 2020 with a return of +15.0%, while the worst month was Oct 2008 at -17.0%. The longest winning streak lasted 7 consecutive months, and the longest losing streak was 5 months.
On a daily basis, VMGAX closed higher 55% of trading days. The best single day was Apr 9, 2025 with a return of +12.4%, while the worst single day was Mar 16, 2020 at -12.7%.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | -1.71% | -4.58% | -4.98% | 14.25% | 8.65% | -2.91% | 7.42% | ||||||
| 2025 | 1.49% | -2.82% | -8.74% | 2.45% | 9.16% | 6.21% | 3.89% | 0.91% | 4.92% | 4.54% | -1.49% | -0.30% | 20.73% |
| 2024 | 2.57% | 6.95% | 0.88% | -4.56% | 6.89% | 7.45% | -2.18% | 2.52% | 2.35% | -0.58% | 6.20% | 1.16% | 32.98% |
| 2023 | 10.71% | -1.40% | 9.01% | 1.78% | 5.97% | 6.84% | 3.20% | -0.68% | -5.85% | -1.07% | 11.64% | 3.71% | 51.57% |
| 2022 | -8.59% | -5.26% | 4.14% | -12.99% | -2.58% | -8.61% | 13.43% | -5.26% | -10.59% | 3.84% | 4.58% | -8.83% | -33.55% |
| 2021 | -0.99% | 0.28% | 2.28% | 7.38% | -1.55% | 5.96% | 3.56% | 3.75% | -5.41% | 8.21% | 0.93% | 1.77% | 28.50% |
Benchmark Metrics
Vanguard Mega Cap Growth Index Fund Institutional Shares has an annualized alpha of 4.18%, beta of 1.03, and R2 of 0.92 versus S&P 500 Index. Calculated based on daily prices since December 27, 2007.
- This fund captured 117.71% of S&P 500 Index gains but only 98.07% of its losses - a favorable profile for investors.
- This fund generated an annualized alpha of 4.18% versus S&P 500 Index - delivering returns beyond what market exposure alone would predict.
- With beta of 1.03 and R2 of 0.92, this fund moves broadly in line with S&P 500 Index - much of its variation is explained by market exposure rather than independent behavior.
- Alpha
- 4.18%
- Beta
- 1.03
- R²
- 0.92
- Upside Capture
- 117.71%
- Downside Capture
- 98.07%
Expense Ratio
VMGAX has an expense ratio of 0.06%, which is considered low.
Return for Risk
Risk / Return Rank
VMGAX ranks 29 for risk / return — below 29% of mutual funds on our site. The returns aren't fully compensating for the risk involved. This isn't necessarily a dealbreaker, but factor it into your decision — especially if you're risk-averse.
Return / Risk — by metrics
The table below present risk-adjusted performance metrics for Vanguard Mega Cap Growth Index Fund Institutional Shares (VMGAX) and compare them to S&P 500 Index.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| VMGAX | Benchmark | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.46 | ||
| Sortino ratioReturn per unit of downside risk | -0.60 | ||
| Omega ratioGain probability vs. loss probability | 1.28 | 1.37 | -0.09 |
| Calmar ratioReturn relative to maximum drawdown | 1.61 | 2.78 | -1.17 |
| Martin ratioReturn relative to average drawdown | 5.46 | 12.44 | -6.98 |
Dividends
Dividend History
Vanguard Mega Cap Growth Index Fund Institutional Shares provided a 0.33% dividend yield over the last twelve months, with an annual payout of $2.91 per share.
| Period | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dividend | $2.91 | $2.96 | $3.00 | $2.62 | $2.41 | $2.17 | $2.65 | $2.49 | $2.39 | $2.73 | $2.65 | $2.38 |
Dividend yield | 0.33% | 0.36% | 0.44% | 0.51% | 0.71% | 0.42% | 0.65% | 0.86% | 1.13% | 1.23% | 1.53% | 1.44% |
Monthly Dividends
The table displays the monthly dividend distributions for Vanguard Mega Cap Growth Index Fund Institutional Shares. The dividends shown in the table have been adjusted to account for any splits that may have occurred.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | $0.00 | $0.00 | $0.65 | $0.00 | $0.00 | $0.00 | $0.65 | ||||||
| 2025 | $0.00 | $0.00 | $0.70 | $0.00 | $0.00 | $0.78 | $0.00 | $0.00 | $0.69 | $0.00 | $0.00 | $0.80 | $2.96 |
| 2024 | $0.00 | $0.00 | $0.61 | $0.00 | $0.00 | $0.63 | $0.00 | $0.00 | $0.76 | $0.00 | $0.00 | $1.00 | $3.00 |
| 2023 | $0.00 | $0.00 | $0.57 | $0.00 | $0.00 | $0.55 | $0.00 | $0.00 | $0.64 | $0.00 | $0.00 | $0.86 | $2.62 |
| 2022 | $0.00 | $0.00 | $0.48 | $0.00 | $0.00 | $0.55 | $0.00 | $0.00 | $0.70 | $0.00 | $0.00 | $0.68 | $2.41 |
| 2021 | $0.00 | $0.00 | $0.53 | $0.00 | $0.00 | $0.53 | $0.00 | $0.00 | $0.56 | $0.00 | $0.00 | $0.56 | $2.17 |
Drawdowns
Drawdowns Chart
The Drawdowns chart displays portfolio losses from any high point along the way. Drawdowns are calculated considering price movements and all distributions paid, if any.
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Worst Drawdowns
The table below displays the maximum drawdowns of the Vanguard Mega Cap Growth Index Fund Institutional Shares. A maximum drawdown is a measure of risk, indicating the largest reduction in portfolio value due to a series of losing trades.
The maximum drawdown for the Vanguard Mega Cap Growth Index Fund Institutional Shares was 47.97%, occurring on Mar 9, 2009. Recovery took 469 trading sessions.
The current Vanguard Mega Cap Growth Index Fund Institutional Shares drawdown is 3.76%.
Related event | Drawdown | Fall | Recovery | Underwater |
|---|---|---|---|---|
Financial crisis2007–2009 | -47.97%Mar 2009 | 1y 2mo | 1y 10mo | 3y 15dDec 2007 - Jan 2011 |
Bear market2022 | -36.03%Nov 2022 | 10mo 10d | 1y 2mo | 2y 15dDec 2021 - Jan 2024 |
COVID crash2020 | -30.95%Mar 2020 | 1mo 2d | 2mo 17d | 3mo 19dFeb 2020 - Jun 2020 |
2025 selloff2025 | -23.45%Apr 2025 | 1mo 17d | 2mo 17d | 4mo 4dFeb 2025 - Jun 2025 |
Rate-hike selloffLate 2018 | -22.56%Dec 2018 | 2mo 23d | 3mo 29d | 6mo 22dOct 2018 - Apr 2019 |
Drawdown Indicators
| VMGAX | Benchmark | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -47.97% | -56.78% | +8.81% |
Max Drawdown (1Y)Largest decline over 1 year | -16.78% | -9.10% | -7.68% |
Max Drawdown (3Y)Largest decline over 3 years | -23.45% | -18.90% | -4.55% |
Max Drawdown (5Y)Largest decline over 5 years | -36.03% | -25.43% | -10.60% |
Max Drawdown (10Y)Largest decline over 10 years | -36.03% | -33.92% | -2.11% |
Current DrawdownCurrent decline from peak | -3.76% | -1.80% | -1.96% |
Average DrawdownAverage peak-to-trough decline | -7.43% | -10.71% | +3.28% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.94% | 2.03% | +2.91% |
Volatility
Volatility Chart
The chart below shows the rolling one-month volatility.
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