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FUNFX vs. MEGBX
Performance
Risk-Adjusted Performance
Dividends
Drawdowns
Volatility

Correlation

The correlation between FUNFX and MEGBX is 0.88, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.


-0.50.00.51.00.9

Performance

FUNFX vs. MEGBX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Funds Fundamental Investors® Class F-3 (FUNFX) and MFS Growth Fund (MEGBX). The values are adjusted to include any dividend payments, if applicable.

-10.00%-5.00%0.00%5.00%10.00%SeptemberOctoberNovemberDecember2025February
3.07%
-7.25%
FUNFX
MEGBX

Key characteristics

Sharpe Ratio

FUNFX:

1.01

MEGBX:

0.18

Sortino Ratio

FUNFX:

1.28

MEGBX:

0.36

Omega Ratio

FUNFX:

1.22

MEGBX:

1.07

Calmar Ratio

FUNFX:

1.53

MEGBX:

0.21

Martin Ratio

FUNFX:

4.45

MEGBX:

0.56

Ulcer Index

FUNFX:

3.81%

MEGBX:

7.84%

Daily Std Dev

FUNFX:

16.79%

MEGBX:

24.40%

Max Drawdown

FUNFX:

-33.92%

MEGBX:

-72.59%

Current Drawdown

FUNFX:

-5.79%

MEGBX:

-16.27%

Returns By Period

In the year-to-date period, FUNFX achieves a 5.65% return, which is significantly higher than MEGBX's 4.62% return.


FUNFX

YTD

5.65%

1M

2.27%

6M

3.07%

1Y

15.14%

5Y*

7.46%

10Y*

N/A

MEGBX

YTD

4.62%

1M

1.62%

6M

-7.25%

1Y

3.44%

5Y*

5.04%

10Y*

8.25%

*Annualized

Compare stocks, funds, or ETFs

Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.


FUNFX vs. MEGBX - Expense Ratio Comparison

FUNFX has a 0.28% expense ratio, which is lower than MEGBX's 1.59% expense ratio.


MEGBX
MFS Growth Fund
Expense ratio chart for MEGBX: current value at 1.59% compared with the broader market ranging from 0.00% to 2.12%.0.50%1.00%1.50%2.00%1.59%
Expense ratio chart for FUNFX: current value at 0.28% compared with the broader market ranging from 0.00% to 2.12%.0.50%1.00%1.50%2.00%0.28%

Risk-Adjusted Performance

FUNFX vs. MEGBX — Risk-Adjusted Performance Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

FUNFX
The Risk-Adjusted Performance Rank of FUNFX is 5353
Overall Rank
The Sharpe Ratio Rank of FUNFX is 4545
Sharpe Ratio Rank
The Sortino Ratio Rank of FUNFX is 3737
Sortino Ratio Rank
The Omega Ratio Rank of FUNFX is 5353
Omega Ratio Rank
The Calmar Ratio Rank of FUNFX is 7575
Calmar Ratio Rank
The Martin Ratio Rank of FUNFX is 5555
Martin Ratio Rank

MEGBX
The Risk-Adjusted Performance Rank of MEGBX is 99
Overall Rank
The Sharpe Ratio Rank of MEGBX is 88
Sharpe Ratio Rank
The Sortino Ratio Rank of MEGBX is 88
Sortino Ratio Rank
The Omega Ratio Rank of MEGBX is 1010
Omega Ratio Rank
The Calmar Ratio Rank of MEGBX is 1313
Calmar Ratio Rank
The Martin Ratio Rank of MEGBX is 88
Martin Ratio Rank
The risk-adjusted ranks indicate the investment's position relative to the market. A rank closer to 100 signifies top-performing investments, while a rank closer to 0 might suggest underperformance, based on the selected ratio. The values are calculated based on the past 12 months of returns.

FUNFX vs. MEGBX - Risk-Adjusted Performance Comparison

This table presents a comparison of risk-adjusted performance metrics for American Funds Fundamental Investors® Class F-3 (FUNFX) and MFS Growth Fund (MEGBX). 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.


Sharpe ratio
The chart of Sharpe ratio for FUNFX, currently valued at 1.01, compared to the broader market-1.000.001.002.003.004.005.001.010.18
The chart of Sortino ratio for FUNFX, currently valued at 1.28, compared to the broader market0.002.004.006.008.0010.0012.001.280.36
The chart of Omega ratio for FUNFX, currently valued at 1.22, compared to the broader market1.002.003.004.001.221.07
The chart of Calmar ratio for FUNFX, currently valued at 1.53, compared to the broader market0.005.0010.0015.0020.001.530.21
The chart of Martin ratio for FUNFX, currently valued at 4.45, compared to the broader market0.0020.0040.0060.0080.004.450.56
FUNFX
MEGBX

The current FUNFX Sharpe Ratio is 1.01, which is higher than the MEGBX Sharpe Ratio of 0.18. The chart below compares the historical Sharpe Ratios of FUNFX and MEGBX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.


Rolling 12-month Sharpe Ratio0.000.501.001.502.002.503.00SeptemberOctoberNovemberDecember2025February
1.01
0.18
FUNFX
MEGBX

Dividends

FUNFX vs. MEGBX - Dividend Comparison

FUNFX's dividend yield for the trailing twelve months is around 1.37%, while MEGBX has not paid dividends to shareholders.


TTM20242023202220212020201920182017201620152014
FUNFX
American Funds Fundamental Investors® Class F-3
1.37%1.45%1.47%1.94%1.56%1.77%1.81%2.23%1.76%0.00%0.00%0.00%
MEGBX
MFS Growth Fund
0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.28%4.83%

Drawdowns

FUNFX vs. MEGBX - Drawdown Comparison

The maximum FUNFX drawdown since its inception was -33.92%, smaller than the maximum MEGBX drawdown of -72.59%. Use the drawdown chart below to compare losses from any high point for FUNFX and MEGBX. For additional features, visit the drawdowns tool.


-20.00%-15.00%-10.00%-5.00%0.00%SeptemberOctoberNovemberDecember2025February
-5.79%
-16.27%
FUNFX
MEGBX

Volatility

FUNFX vs. MEGBX - Volatility Comparison

The current volatility for American Funds Fundamental Investors® Class F-3 (FUNFX) is 4.06%, while MFS Growth Fund (MEGBX) has a volatility of 5.24%. This indicates that FUNFX experiences smaller price fluctuations and is considered to be less risky than MEGBX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.


5.00%10.00%15.00%20.00%SeptemberOctoberNovemberDecember2025February
4.06%
5.24%
FUNFX
MEGBX
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Disclaimer

The information contained herein does not constitute investment advice and made available for educational purposes only. Prices and returns on equities are listed without consideration of fees, commissions, taxes, penalties, or interest payable due to purchasing, holding, or selling.

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