GXXIX vs. RFNGX

Last updated Jun 4, 2026

GXXIX (abrdn U.S. Sustainable Leaders Fund) and RFNGX (American Funds Fundamental Investors Fund Class R6) are both Large Cap Growth Equities funds. Over the past 10 years, GXXIX returned 14.74%/yr vs 15.16%/yr for RFNGX. Their correlation of 0.92 suggests significant overlap in exposure. GXXIX charges 0.97%/yr vs 0.28%/yr for RFNGX.

Performance

GXXIX vs. RFNGX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in abrdn U.S. Sustainable Leaders Fund (GXXIX) and American Funds Fundamental Investors Fund Class R6 (RFNGX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, GXXIX achieves a 6.73% return, which is significantly lower than RFNGX's 15.28% return. Both investments have delivered pretty close results over the past 10 years, with GXXIX having a 14.74% annualized return and RFNGX not far ahead at 15.16%.

GXXIX

• 1D: 0.82%
• 1M: 4.39%
• YTD: 6.73%
• 6M: 5.69%
• 1Y: 12.71%
• 3Y*: 9.59%
• 5Y*: 11.90%
• 10Y*: 14.74%

RFNGX

• 1D: 0.01%
• 1M: 5.92%
• YTD: 15.28%
• 6M: 16.31%
• 1Y: 34.94%
• 3Y*: 26.36%
• 5Y*: 15.21%
• 10Y*: 15.16%

*Multi-year figures are annualized to reflect compound growth (CAGR)

GXXIX vs. RFNGX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
GXXIX abrdn U.S. Sustainable Leaders Fund	6.73%	3.82%	10.11%	15.19%	-26.55%	81.37%	29.56%	36.96%	-6.73%	20.42%
RFNGX American Funds Fundamental Investors Fund Class R6	15.28%	24.58%	22.77%	26.25%	-16.38%	22.83%	13.72%	27.48%	-7.09%	23.15%

Correlation

The correlation between GXXIX and RFNGX is 0.83, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.83
Correlation (3Y) Calculated over the trailing 3-year period	0.88
Correlation (5Y) Calculated over the trailing 5-year period	0.91
Correlation (10Y) Calculated over the trailing 10-year period	0.91
Correlation (All Time) Calculated using the full available price history since Oct 13, 2011	0.92

The correlation between GXXIX and RFNGX has been stable across timeframes, ranging from 0.83 to 0.92 - a consistent structural relationship.

Return for Risk

GXXIX vs. RFNGX — Risk / Return Rank

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

GXXIX

GXXIX Risk / Return Rank: 15
GXXIX Sharpe Ratio Rank: 16
GXXIX Sortino Ratio Rank: 15
GXXIX Omega Ratio Rank: 15
GXXIX Calmar Ratio Rank: 12
GXXIX Martin Ratio Rank: 15

RFNGX

RFNGX Risk / Return Rank: 76
RFNGX Sharpe Ratio Rank: 80
RFNGX Sortino Ratio Rank: 71
RFNGX Omega Ratio Rank: 71
RFNGX Calmar Ratio Rank: 74
RFNGX Martin Ratio Rank: 83

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

GXXIX vs. RFNGX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for abrdn U.S. Sustainable Leaders Fund (GXXIX) and American Funds Fundamental Investors Fund Class R6 (RFNGX). 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.

	GXXIX	RFNGX	Difference
Sharpe ratio: Return per unit of total volatility	1.12	2.61	-1.49
Sortino ratio: Return per unit of downside risk	1.64	3.50	-1.86
Omega ratio: Gain probability vs. loss probability	1.20	1.47	-0.27
Calmar ratio: Return relative to maximum drawdown	1.13	3.38	-2.25
Martin ratio: Return relative to average drawdown	4.36	15.68	-11.33
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

GXXIX vs. RFNGX - Sharpe Ratio Comparison

The current GXXIX Sharpe Ratio is 1.12, which is lower than the RFNGX Sharpe Ratio of 2.61. The chart below compares the historical Sharpe Ratios of GXXIX and RFNGX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	GXXIX	RFNGX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.12	2.61	-1.49
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.43	0.91	-0.48
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.62	0.86	-0.23
Sharpe Ratio (All Time) Calculated using the full available price history	0.65	0.80	-0.15

Drawdowns

GXXIX vs. RFNGX - Drawdown Comparison

The maximum GXXIX drawdown since its inception was -33.65%, roughly equal to the maximum RFNGX drawdown of -33.90%. Use the drawdown chart below to compare losses from any high point for GXXIX and RFNGX.

Drawdown Indicators

	GXXIX	RFNGX	Difference
Max Drawdown Largest peak-to-trough decline	-33.65%	-33.90%	+0.25%
Max Drawdown (1Y) Largest decline over 1 year	-11.78%	-10.62%	-1.16%
Max Drawdown (3Y) Largest decline over 3 years	-19.74%	-17.92%	-1.82%
Max Drawdown (5Y) Largest decline over 5 years	-33.65%	-24.88%	-8.77%
Max Drawdown (10Y) Largest decline over 10 years	-33.65%	-33.90%	+0.25%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-6.16%	-4.02%	-2.14%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.06%	2.29%	+0.77%

Volatility

GXXIX vs. RFNGX - Volatility Comparison

The current volatility for abrdn U.S. Sustainable Leaders Fund (GXXIX) is 2.93%, while American Funds Fundamental Investors Fund Class R6 (RFNGX) has a volatility of 3.68%. This indicates that GXXIX experiences smaller price fluctuations and is considered to be less risky than RFNGX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	GXXIX	RFNGX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.93%	3.68%	-0.75%
Volatility (6M) Calculated over the trailing 6-month period	9.35%	10.81%	-1.46%
Volatility (1Y) Calculated over the trailing 1-year period	11.90%	13.75%	-1.85%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	27.77%	16.81%	+10.96%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	23.72%	17.73%	+5.99%

GXXIX vs. RFNGX - Expense Ratio Comparison

GXXIX has a 0.97% expense ratio, which is higher than RFNGX's 0.28% expense ratio.

Dividends

GXXIX vs. RFNGX - Dividend Comparison

GXXIX's dividend yield for the trailing twelve months is around 2.15%, less than RFNGX's 7.68% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
GXXIX abrdn U.S. Sustainable Leaders Fund	2.15%	2.30%	0.00%	0.28%	0.39%	59.39%	14.10%	9.76%	12.93%	10.11%	12.20%	5.82%
RFNGX American Funds Fundamental Investors Fund Class R6	7.68%	8.82%	8.91%	6.10%	5.33%	11.29%	1.77%	7.21%	10.67%	7.56%	5.01%	6.01%

Frequently Asked Questions

Can I hold both GXXIX and RFNGX in my portfolio?

GXXIX and RFNGX have a correlation of 0.83, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, GXXIX or RFNGX?

RFNGX has higher volatility (3.68%) compared to GXXIX (2.93%). In terms of maximum drawdown, GXXIX dropped -33.65% vs RFNGX's -33.90%.

Which has better risk-adjusted returns?

RFNGX currently has the higher Sharpe Ratio (2.61 vs 1.12), 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.