AMUSX vs. MGK
Compare and contrast key facts about American Funds U.S. Government Securities Fund (AMUSX) and Vanguard Mega Cap Growth ETF (MGK).
AMUSX is managed by American Funds. It was launched on Oct 16, 1985. MGK is a passively managed fund by Vanguard that tracks the performance of the CRSP US Mega Cap Growth Index. It was launched on Dec 17, 2007.
Performance
AMUSX vs. MGK - Performance Comparison
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AMUSX vs. MGK - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
AMUSX American Funds U.S. Government Securities Fund | -0.64% | 7.55% | 0.63% | 2.79% | -11.50% | -0.84% | 9.44% | 5.03% | 0.64% | 1.54% |
MGK Vanguard Mega Cap Growth ETF | -9.86% | 20.67% | 32.94% | 51.67% | -33.59% | 28.58% | 41.01% | 37.38% | -2.91% | 29.49% |
Returns By Period
In the year-to-date period, AMUSX achieves a -0.64% return, which is significantly higher than MGK's -9.86% return. Over the past 10 years, AMUSX has underperformed MGK with an annualized return of 1.12%, while MGK has yielded a comparatively higher 16.97% annualized return.
AMUSX
- 1D
- 0.17%
- 1M
- -1.72%
- YTD
- -0.64%
- 6M
- 0.18%
- 1Y
- 3.15%
- 3Y*
- 2.47%
- 5Y*
- -0.08%
- 10Y*
- 1.12%
MGK
- 1D
- 1.17%
- 1M
- -4.13%
- YTD
- -9.86%
- 6M
- -7.94%
- 1Y
- 19.83%
- 3Y*
- 22.59%
- 5Y*
- 12.64%
- 10Y*
- 16.97%
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AMUSX vs. MGK - Expense Ratio Comparison
AMUSX has a 0.61% expense ratio, which is higher than MGK's 0.05% expense ratio.
Return for Risk
AMUSX vs. MGK — Risk / Return Rank
AMUSX
MGK
AMUSX vs. MGK - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for American Funds U.S. Government Securities Fund (AMUSX) and Vanguard Mega Cap Growth ETF (MGK). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
| AMUSX | MGK | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.77 | 0.85 | -0.08 |
Sortino ratioReturn per unit of downside risk | 1.16 | 1.39 | -0.23 |
Omega ratioGain probability vs. loss probability | 1.14 | 1.19 | -0.06 |
Calmar ratioReturn relative to maximum drawdown | 1.34 | 1.23 | +0.11 |
Martin ratioReturn relative to average drawdown | 3.85 | 4.27 | -0.41 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| AMUSX | MGK | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.77 | 0.85 | -0.08 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | -0.01 | 0.56 | -0.57 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.23 | 0.78 | -0.55 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.84 | 0.60 | +0.23 |
Correlation
The correlation between AMUSX and MGK is -0.17. This indicates that the assets' prices tend to move in opposite directions. Negative correlation can be particularly beneficial for diversification and risk management, as one asset may offset the losses of the other during market fluctuations.
Dividends
AMUSX vs. MGK - Dividend Comparison
AMUSX's dividend yield for the trailing twelve months is around 3.62%, more than MGK's 0.39% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
AMUSX American Funds U.S. Government Securities Fund | 3.62% | 3.97% | 4.19% | 3.44% | 2.01% | 1.05% | 4.92% | 2.79% | 1.72% | 1.32% | 2.30% | 2.84% |
MGK Vanguard Mega Cap Growth ETF | 0.39% | 0.35% | 0.43% | 0.50% | 0.70% | 0.41% | 0.65% | 0.85% | 1.12% | 1.23% | 1.53% | 1.43% |
Drawdowns
AMUSX vs. MGK - Drawdown Comparison
The maximum AMUSX drawdown since its inception was -17.48%, smaller than the maximum MGK drawdown of -47.97%. Use the drawdown chart below to compare losses from any high point for AMUSX and MGK.
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Drawdown Indicators
| AMUSX | MGK | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -17.48% | -47.97% | +30.49% |
Max Drawdown (1Y)Largest decline over 1 year | -2.94% | -16.85% | +13.91% |
Max Drawdown (5Y)Largest decline over 5 years | -16.84% | -36.01% | +19.17% |
Max Drawdown (10Y)Largest decline over 10 years | -17.48% | -36.01% | +18.53% |
Current DrawdownCurrent decline from peak | -3.52% | -12.56% | +9.04% |
Average DrawdownAverage peak-to-trough decline | -2.75% | -7.51% | +4.76% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.02% | 4.87% | -3.85% |
Volatility
AMUSX vs. MGK - Volatility Comparison
The current volatility for American Funds U.S. Government Securities Fund (AMUSX) is 1.59%, while Vanguard Mega Cap Growth ETF (MGK) has a volatility of 7.13%. This indicates that AMUSX experiences smaller price fluctuations and is considered to be less risky than MGK based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| AMUSX | MGK | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.59% | 7.13% | -5.54% |
Volatility (6M)Calculated over the trailing 6-month period | 2.49% | 12.93% | -10.44% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.56% | 23.35% | -18.79% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.02% | 22.63% | -16.61% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.83% | 21.82% | -16.99% |