AFIFX vs. YFSIX
AFIFX (American Funds Fundamental Investors Class F-1) and YFSIX (AMG Yacktman Global Fund) are both mutual funds - AFIFX is a Large Cap Blend Equities fund actively managed by American Funds, while YFSIX is a Global Equities fund managed by AMG. Over the past 5 years, AFIFX returned 13.67%/yr vs 9.02%/yr for YFSIX. Their 0.73 correlation means they have sometimes moved together and sometimes differently. AFIFX charges 0.64%/yr vs 0.95%/yr for YFSIX.
Performance
AFIFX vs. YFSIX - Performance Comparison
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Returns By Period
In the year-to-date period, AFIFX achieves a 12.09% return, which is significantly lower than YFSIX's 24.97% return.
AFIFX
- 1D
- 2.12%
- 1M
- -0.98%
- 6M
- 7.95%
- YTD
- 12.09%
- 1Y
- 24.58%
- 3Y*
- 21.93%
- 5Y*
- 13.67%
- 10Y*
- 14.24%
- ALL TIME*
- 10.56%
YFSIX
- 1D
- 3.06%
- 1M
- 4.28%
- 6M
- 14.11%
- YTD
- 24.97%
- 1Y
- 22.32%
- 3Y*
- 15.02%
- 5Y*
- 9.02%
- 10Y*
- —
- ALL TIME*
- 12.76%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $0.00 | $0.00 | $0.00 | |
| $0.00 | $0.00 | $0.00 |
AFIFX vs. YFSIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
AFIFX American Funds Fundamental Investors Class F-1 | 12.09% | 24.12% | 22.68% | 25.78% | -16.69% | 22.36% | 14.85% | 27.00% | -8.19% | 19.20% |
YFSIX AMG Yacktman Global Fund | 24.97% | 14.91% | -0.34% | 16.64% | -9.15% | 13.13% | 18.46% | 24.40% | 2.18% | 20.95% |
Correlation
The correlation between AFIFX and YFSIX is 0.54, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.54 |
Correlation (3Y) Balances recent behavior with more history. | 0.58 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.69 |
Correlation (All Time) Calculated using the full available price history since Feb 2, 2017 | 0.73 |
The correlation between AFIFX and YFSIX shifts across timeframes, from 0.54 (1 year) to 0.73 (all time), reflecting how their relationship changes across market environments.
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Return for Risk
AFIFX vs. YFSIX — Risk / Return Rank
AFIFX
YFSIX
AFIFX vs. YFSIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for American Funds Fundamental Investors Class F-1 (AFIFX) and AMG Yacktman Global Fund (YFSIX). 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.
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.
| AFIFX | YFSIX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.58 | ||
| Sortino ratioReturn per unit of downside risk | +0.95 | ||
| Omega ratioGain probability vs. loss probability | 1.26 | 1.22 | +0.04 |
| Calmar ratioReturn relative to maximum drawdown | 2.08 | 1.41 | +0.67 |
| Martin ratioReturn relative to average drawdown | 8.97 | 4.10 | +4.87 |
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Drawdowns
AFIFX vs. YFSIX - Drawdown Comparison
The maximum AFIFX drawdown since its inception was -53.25%, which is greater than YFSIX's maximum drawdown of -35.10%. Use the drawdown chart below to compare losses from any high point for AFIFX and YFSIX.
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Drawdown Indicators
| AFIFX | YFSIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -53.25% | -35.10% | -18.15% |
Max Drawdown (1Y)Largest decline over 1 year | -10.67% | -14.20% | +3.53% |
Max Drawdown (3Y)Largest decline over 3 years | -17.99% | -14.20% | -3.79% |
Max Drawdown (5Y)Largest decline over 5 years | -25.11% | -25.14% | +0.03% |
Max Drawdown (10Y)Largest decline over 10 years | -33.92% | — | — |
Current DrawdownCurrent decline from peak | -2.62% | -2.55% | -0.07% |
Average DrawdownAverage peak-to-trough decline | -7.33% | -4.89% | -2.44% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 2.47% | 4.86% | -2.39% |
Volatility
AFIFX vs. YFSIX - Volatility Comparison
The current volatility for American Funds Fundamental Investors Class F-1 (AFIFX) is 4.22%, while AMG Yacktman Global Fund (YFSIX) has a volatility of 5.69%. This indicates that AFIFX experiences smaller price fluctuations and is considered to be less risky than YFSIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| AFIFX | YFSIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 4.22% | 5.69% | -1.47% |
Volatility (6M)Calculated over the trailing 6-month period | 12.13% | 15.90% | -3.77% |
Volatility (1Y)Calculated over the trailing 1-year period | 15.16% | 22.66% | -7.50% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 17.01% | 15.78% | +1.23% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 17.76% | 16.36% | +1.40% |
AFIFX vs. YFSIX - Expense Ratio Comparison
AFIFX has a 0.64% expense ratio, which is lower than YFSIX's 0.95% expense ratio.
Dividends
AFIFX vs. YFSIX - Dividend Comparison
AFIFX's dividend yield for the trailing twelve months is around 7.37%, while YFSIX has not paid dividends to shareholders.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
AFIFX American Funds Fundamental Investors Class F-1 | 7.37% | 8.48% | 8.84% | 5.76% | 4.92% | 10.91% | 2.57% | 6.86% | 9.21% | 7.21% | 4.65% | 6.01% |
YFSIX AMG Yacktman Global Fund | 0.00% | 0.00% | 8.68% | 8.02% | 4.32% | 8.18% | 4.76% | 6.59% | 0.71% | 2.63% | 0.00% | 0.00% |
Frequently Asked Questions
AFIFX and YFSIX have a correlation of 0.54, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
YFSIX has higher volatility (5.69%) compared to AFIFX (4.22%). In terms of maximum drawdown, AFIFX dropped -53.25% vs YFSIX's -35.10%.
AFIFX currently has the higher Sharpe Ratio (1.46 vs 0.88), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
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