RYGRX vs. MAFOX

Last updated Jul 16, 2026

RYGRX (Rydex S&P 500 Pure Growth Fund) and MAFOX (BlackRock Large Cap Focus Growth Fund) are both Large Cap Growth Equities funds. Over the past 10 years, RYGRX returned 12.64%/yr vs 17.08%/yr for MAFOX. Their correlation of 0.88 suggests significant overlap in exposure. RYGRX charges 2.26%/yr vs 0.67%/yr for MAFOX.

Performance

RYGRX vs. MAFOX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Rydex S&P 500 Pure Growth Fund (RYGRX) and BlackRock Large Cap Focus Growth Fund (MAFOX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RYGRX achieves a 26.94% return, which is significantly higher than MAFOX's 11.56% return. Over the past 10 years, RYGRX has underperformed MAFOX with an annualized return of 12.64%, while MAFOX has yielded a comparatively higher 17.08% annualized return.

RYGRX

• 1D: 1.67%
• 1M: -4.90%
• 6M: 22.30%
• YTD: 26.94%
• 1Y: 27.84%
• 3Y*: 22.85%
• 5Y*: 8.55%
• 10Y*: 12.64%

MAFOX

• 1D: 1.39%
• 1M: -0.53%
• 6M: 10.64%
• YTD: 11.56%
• 1Y: 16.83%
• 3Y*: 21.60%
• 5Y*: 10.18%
• 10Y*: 17.08%

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

RYGRX vs. MAFOX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RYGRX Rydex S&P 500 Pure Growth Fund	26.94%	11.00%	25.73%	5.80%	-28.71%	26.61%	26.34%	34.13%	-6.28%	23.74%
MAFOX BlackRock Large Cap Focus Growth Fund	11.56%	12.76%	31.11%	52.63%	-38.05%	17.13%	46.85%	31.16%	3.63%	29.90%

Correlation

The correlation between RYGRX and MAFOX is 0.79, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.79
Correlation (3Y) Calculated over the trailing 3-year period	0.80
Correlation (5Y) Calculated over the trailing 5-year period	0.84
Correlation (10Y) Calculated over the trailing 10-year period	0.86
Correlation (All Time) Calculated using the full available price history since Jan 3, 2005	0.88

The correlation between RYGRX and MAFOX has been stable across timeframes, ranging from 0.79 to 0.88 - a consistent structural relationship.

Return for Risk

RYGRX vs. MAFOX — Risk / Return Rank

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

RYGRX

RYGRX Risk / Return Rank: 39
RYGRX Sharpe Ratio Rank: 28
RYGRX Sortino Ratio Rank: 27
RYGRX Omega Ratio Rank: 28
RYGRX Calmar Ratio Rank: 62
RYGRX Martin Ratio Rank: 51

MAFOX

MAFOX Risk / Return Rank: 18
MAFOX Sharpe Ratio Rank: 19
MAFOX Sortino Ratio Rank: 18
MAFOX Omega Ratio Rank: 19
MAFOX Calmar Ratio Rank: 16
MAFOX Martin Ratio Rank: 18

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.

RYGRX vs. MAFOX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Rydex S&P 500 Pure Growth Fund (RYGRX) and BlackRock Large Cap Focus Growth Fund (MAFOX). 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.

	RYGRX	MAFOX	Difference
Sharpe ratio: Return per unit of total volatility	1.13	0.92	+0.22
Sortino ratio: Return per unit of downside risk	1.63	1.33	+0.30
Omega ratio: Gain probability vs. loss probability	1.21	1.17	+0.04
Calmar ratio: Return relative to maximum drawdown	2.38	1.03	+1.36
Martin ratio: Return relative to average drawdown	8.18	3.28	+4.90

RYGRX vs. MAFOX - Sharpe Ratio Comparison

The current RYGRX Sharpe Ratio is 1.13, which is comparable to the MAFOX Sharpe Ratio of 0.92. The chart below compares the historical Sharpe Ratios of RYGRX and MAFOX, 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

RYGRX vs. MAFOX - Drawdown Comparison

The maximum RYGRX drawdown since its inception was -54.22%, smaller than the maximum MAFOX drawdown of -89.93%. Use the drawdown chart below to compare losses from any high point for RYGRX and MAFOX.

Drawdown Indicators

	RYGRX	MAFOX	Difference
Max Drawdown Largest peak-to-trough decline	-54.22%	-89.93%	+35.71%
Max Drawdown (1Y) Largest decline over 1 year	-11.17%	-16.70%	+5.53%
Max Drawdown (3Y) Largest decline over 3 years	-24.95%	-24.48%	-0.47%
Max Drawdown (5Y) Largest decline over 5 years	-36.57%	-42.39%	+5.82%
Max Drawdown (10Y) Largest decline over 10 years	-36.63%	-42.39%	+5.76%
Current Drawdown Current decline from peak	-6.48%	-3.67%	-2.81%
Average Drawdown Average peak-to-trough decline	-9.38%	-54.01%	+44.63%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.25%	5.22%	-1.97%

Volatility

RYGRX vs. MAFOX - Volatility Comparison

Rydex S&P 500 Pure Growth Fund (RYGRX) has a higher volatility of 11.33% compared to BlackRock Large Cap Focus Growth Fund (MAFOX) at 5.98%. This indicates that RYGRX's price experiences larger fluctuations and is considered to be riskier than MAFOX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RYGRX	MAFOX	Difference
Volatility (1M) Calculated over the trailing 1-month period	11.33%	5.98%	+5.35%
Volatility (6M) Calculated over the trailing 6-month period	20.55%	14.92%	+5.63%
Volatility (1Y) Calculated over the trailing 1-year period	23.45%	18.67%	+4.78%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	24.20%	23.84%	+0.36%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	23.19%	22.75%	+0.44%

RYGRX vs. MAFOX - Expense Ratio Comparison

RYGRX has a 2.26% expense ratio, which is higher than MAFOX's 0.67% expense ratio.

Dividends

RYGRX vs. MAFOX - Dividend Comparison

RYGRX's dividend yield for the trailing twelve months is around 4.01%, less than MAFOX's 14.37% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MAFOX BlackRock Large Cap Focus Growth Fund	14.37%	16.03%	4.04%	3.05%	2.01%	11.20%	0.53%	5.45%	4.43%	4.06%	0.00%	4.66%
RYGRX Rydex S&P 500 Pure Growth Fund	4.01%	5.09%	0.00%	0.00%	0.00%	2.81%	4.43%	12.10%	7.15%	6.26%	0.05%	2.96%

Frequently Asked Questions

Can I hold both RYGRX and MAFOX in my portfolio?

RYGRX and MAFOX have a correlation of 0.79, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RYGRX or MAFOX?

RYGRX has higher volatility (11.33%) compared to MAFOX (5.98%). In terms of maximum drawdown, RYGRX dropped -54.22% vs MAFOX's -89.93%.

Which has better risk-adjusted returns?

RYGRX currently has the higher Sharpe Ratio (1.13 vs 0.92), 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.