RNGCX vs. WGFIX

Last updated Jul 11, 2026

RNGCX (American Funds The New Economy Fund Class R-3) and WGFIX (William Blair Global Leaders Fund) are both Global Equities funds. Over the past 10 years, RNGCX returned 15.67%/yr vs 11.19%/yr for WGFIX. Their correlation of 0.92 suggests significant overlap in exposure. RNGCX charges 1.05%/yr vs 0.90%/yr for WGFIX.

Performance

RNGCX vs. WGFIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Funds The New Economy Fund Class R-3 (RNGCX) and William Blair Global Leaders Fund (WGFIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RNGCX achieves a 20.34% return, which is significantly higher than WGFIX's 7.85% return. Over the past 10 years, RNGCX has outperformed WGFIX with an annualized return of 15.67%, while WGFIX has yielded a comparatively lower 11.19% annualized return.

RNGCX

• 1D: 1.18%
• 1M: 2.30%
• 6M: 15.45%
• YTD: 20.34%
• 1Y: 41.57%
• 3Y*: 28.67%
• 5Y*: 12.42%
• 10Y*: 15.67%

WGFIX

• 1D: 0.42%
• 1M: 2.44%
• 6M: 5.62%
• YTD: 7.85%
• 1Y: 15.12%
• 3Y*: 12.42%
• 5Y*: 3.92%
• 10Y*: 11.19%

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

RNGCX vs. WGFIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RNGCX American Funds The New Economy Fund Class R-3	20.34%	30.60%	23.19%	28.77%	-29.88%	11.70%	33.05%	26.06%	-4.68%	33.90%
WGFIX William Blair Global Leaders Fund	7.85%	16.06%	7.52%	23.02%	-29.32%	16.71%	32.06%	31.97%	-8.04%	30.67%

Correlation

The correlation between RNGCX and WGFIX is 0.90, 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	0.90
Correlation (3Y) Calculated over the trailing 3-year period	0.92
Correlation (5Y) Calculated over the trailing 5-year period	0.93
Correlation (10Y) Calculated over the trailing 10-year period	0.92
Correlation (All Time) Calculated using the full available price history since Oct 17, 2007	0.92

The correlation between RNGCX and WGFIX has been stable across timeframes, ranging from 0.90 to 0.93 - a consistent structural relationship.

Return for Risk

RNGCX vs. WGFIX — Risk / Return Rank

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

RNGCX

RNGCX Risk / Return Rank: 80
RNGCX Sharpe Ratio Rank: 82
RNGCX Sortino Ratio Rank: 73
RNGCX Omega Ratio Rank: 75
RNGCX Calmar Ratio Rank: 83
RNGCX Martin Ratio Rank: 88

WGFIX

WGFIX Risk / Return Rank: 20
WGFIX Sharpe Ratio Rank: 20
WGFIX Sortino Ratio Rank: 19
WGFIX Omega Ratio Rank: 21
WGFIX Calmar Ratio Rank: 17
WGFIX Martin Ratio Rank: 23

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.

RNGCX vs. WGFIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Funds The New Economy Fund Class R-3 (RNGCX) and William Blair Global Leaders Fund (WGFIX). 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.

	RNGCX	WGFIX	Difference
Sharpe ratio: Return per unit of total volatility	2.13	0.95	+1.18
Sortino ratio: Return per unit of downside risk	2.74	1.38	+1.36
Omega ratio: Gain probability vs. loss probability	1.37	1.18	+0.19
Calmar ratio: Return relative to maximum drawdown	3.07	1.10	+1.98
Martin ratio: Return relative to average drawdown	13.03	4.25	+8.78

RNGCX vs. WGFIX - Sharpe Ratio Comparison

The current RNGCX Sharpe Ratio is 2.13, which is higher than the WGFIX Sharpe Ratio of 0.95. The chart below compares the historical Sharpe Ratios of RNGCX and WGFIX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

RNGCX vs. WGFIX - Drawdown Comparison

The maximum RNGCX drawdown since its inception was -55.54%, smaller than the maximum WGFIX drawdown of -59.51%. Use the drawdown chart below to compare losses from any high point for RNGCX and WGFIX.

Drawdown Indicators

	RNGCX	WGFIX	Difference
Max Drawdown Largest peak-to-trough decline	-55.54%	-59.51%	+3.97%
Max Drawdown (1Y) Largest decline over 1 year	-13.41%	-13.11%	-0.30%
Max Drawdown (3Y) Largest decline over 3 years	-20.86%	-18.90%	-1.96%
Max Drawdown (5Y) Largest decline over 5 years	-37.25%	-38.76%	+1.51%
Max Drawdown (10Y) Largest decline over 10 years	-37.25%	-38.76%	+1.51%
Current Drawdown Current decline from peak	-2.80%	-1.92%	-0.88%
Average Drawdown Average peak-to-trough decline	-8.89%	-11.81%	+2.92%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.16%	3.37%	-0.21%

Volatility

RNGCX vs. WGFIX - Volatility Comparison

American Funds The New Economy Fund Class R-3 (RNGCX) has a higher volatility of 8.52% compared to William Blair Global Leaders Fund (WGFIX) at 6.77%. This indicates that RNGCX's price experiences larger fluctuations and is considered to be riskier than WGFIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RNGCX	WGFIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.52%	6.77%	+1.75%
Volatility (6M) Calculated over the trailing 6-month period	16.14%	12.87%	+3.27%
Volatility (1Y) Calculated over the trailing 1-year period	19.37%	15.17%	+4.20%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.82%	19.01%	+0.81%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.21%	18.87%	+0.34%

RNGCX vs. WGFIX - Expense Ratio Comparison

RNGCX has a 1.05% expense ratio, which is higher than WGFIX's 0.90% expense ratio.

Dividends

RNGCX vs. WGFIX - Dividend Comparison

RNGCX's dividend yield for the trailing twelve months is around 8.73%, less than WGFIX's 79.30% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
RNGCX American Funds The New Economy Fund Class R-3	8.73%	10.50%	10.06%	3.87%	0.00%	7.83%	2.53%	7.21%	9.78%	8.29%	0.00%	5.89%
WGFIX William Blair Global Leaders Fund	79.30%	85.53%	54.25%	6.65%	2.17%	5.65%	12.57%	1.35%	17.62%	4.24%	0.72%	5.05%

Frequently Asked Questions

Can I hold both RNGCX and WGFIX in my portfolio?

With a correlation of 0.90, RNGCX and WGFIX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, RNGCX or WGFIX?

RNGCX has higher volatility (8.52%) compared to WGFIX (6.77%). In terms of maximum drawdown, RNGCX dropped -55.54% vs WGFIX's -59.51%.

Which has better risk-adjusted returns?

RNGCX currently has the higher Sharpe Ratio (2.13 vs 0.95), 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.