VFINX vs. RYEIX

Last updated Jun 26, 2026

VFINX (Vanguard 500 Index Fund Investor Shares) and RYEIX (Rydex Energy Fund) are both mutual funds - VFINX is a Large Cap Blend Equities fund tracking the S&P 500 Index, while RYEIX is a Energy Equities fund managed by Rydex Funds. Over the past 10 years, VFINX returned 15.47%/yr vs 5.69%/yr for RYEIX. A 0.56 correlation means they provide meaningful diversification when combined. VFINX charges 0.14%/yr vs 1.36%/yr for RYEIX.

Performance

VFINX vs. RYEIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard 500 Index Fund Investor Shares (VFINX) and Rydex Energy Fund (RYEIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VFINX achieves a 8.04% return, which is significantly lower than RYEIX's 23.44% return. Over the past 10 years, VFINX has outperformed RYEIX with an annualized return of 15.47%, while RYEIX has yielded a comparatively lower 5.69% annualized return.

VFINX

• 1D: -0.10%
• 1M: -2.05%
• YTD: 8.04%
• 6M: 6.71%
• 1Y: 22.07%
• 3Y*: 20.61%
• 5Y*: 12.90%
• 10Y*: 15.47%

RYEIX

• 1D: -1.89%
• 1M: -8.31%
• YTD: 23.44%
• 6M: 23.71%
• 1Y: 35.98%
• 3Y*: 14.10%
• 5Y*: 14.95%
• 10Y*: 5.69%

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

VFINX vs. RYEIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VFINX Vanguard 500 Index Fund Investor Shares	8.04%	17.71%	24.84%	26.12%	-18.24%	28.53%	18.20%	31.33%	-4.55%	21.66%
RYEIX Rydex Energy Fund	23.44%	6.96%	0.49%	1.87%	49.54%	50.70%	-34.24%	6.50%	-25.31%	-6.17%

Correlation

The correlation between VFINX and RYEIX is 0.08, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.08
Correlation (3Y) Calculated over the trailing 3-year period	0.29
Correlation (5Y) Calculated over the trailing 5-year period	0.41
Correlation (10Y) Calculated over the trailing 10-year period	0.49
Correlation (All Time) Calculated using the full available price history since Jan 4, 1999	0.56

Over the past year, the correlation between VFINX and RYEIX has dropped to 0.08 - well below their long-term average of 0.56, suggesting their price drivers have been diverging.

Return for Risk

VFINX vs. RYEIX — Risk / Return Rank

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

VFINX

VFINX Risk / Return Rank: 54
VFINX Sharpe Ratio Rank: 51
VFINX Sortino Ratio Rank: 48
VFINX Omega Ratio Rank: 50
VFINX Calmar Ratio Rank: 55
VFINX Martin Ratio Rank: 67

RYEIX

RYEIX Risk / Return Rank: 55
RYEIX Sharpe Ratio Rank: 52
RYEIX Sortino Ratio Rank: 45
RYEIX Omega Ratio Rank: 42
RYEIX Calmar Ratio Rank: 77
RYEIX Martin Ratio Rank: 57

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.

VFINX vs. RYEIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard 500 Index Fund Investor Shares (VFINX) and Rydex Energy Fund (RYEIX). 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.

	VFINX	RYEIX	Difference
Sharpe ratio: Return per unit of total volatility	1.77	1.75	+0.02
Sortino ratio: Return per unit of downside risk	2.43	2.33	+0.10
Omega ratio: Gain probability vs. loss probability	1.32	1.29	+0.03
Calmar ratio: Return relative to maximum drawdown	2.49	2.98	-0.50
Martin ratio: Return relative to average drawdown	11.10	9.65	+1.45

VFINX vs. RYEIX - Sharpe Ratio Comparison

The current VFINX Sharpe Ratio is 1.77, which is comparable to the RYEIX Sharpe Ratio of 1.75. The chart below compares the historical Sharpe Ratios of VFINX and RYEIX, 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

VFINX vs. RYEIX - Drawdown Comparison

The maximum VFINX drawdown since its inception was -55.25%, smaller than the maximum RYEIX drawdown of -83.50%. Use the drawdown chart below to compare losses from any high point for VFINX and RYEIX.

Drawdown Indicators

	VFINX	RYEIX	Difference
Max Drawdown Largest peak-to-trough decline	-55.25%	-83.50%	+28.25%
Max Drawdown (1Y) Largest decline over 1 year	-8.92%	-11.71%	+2.79%
Max Drawdown (3Y) Largest decline over 3 years	-18.76%	-26.94%	+8.18%
Max Drawdown (5Y) Largest decline over 5 years	-24.59%	-26.94%	+2.35%
Max Drawdown (10Y) Largest decline over 10 years	-33.83%	-74.93%	+41.10%
Current Drawdown Current decline from peak	-3.23%	-11.71%	+8.48%
Average Drawdown Average peak-to-trough decline	-8.28%	-28.57%	+20.29%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.99%	3.61%	-1.62%

Volatility

VFINX vs. RYEIX - Volatility Comparison

The current volatility for Vanguard 500 Index Fund Investor Shares (VFINX) is 4.88%, while Rydex Energy Fund (RYEIX) has a volatility of 6.83%. This indicates that VFINX experiences smaller price fluctuations and is considered to be less risky than RYEIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VFINX	RYEIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.88%	6.83%	-1.95%
Volatility (6M) Calculated over the trailing 6-month period	9.90%	15.55%	-5.65%
Volatility (1Y) Calculated over the trailing 1-year period	12.54%	19.91%	-7.37%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.00%	26.42%	-9.42%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.08%	31.79%	-13.71%

VFINX vs. RYEIX - Expense Ratio Comparison

VFINX has a 0.14% expense ratio, which is lower than RYEIX's 1.36% expense ratio.

Dividends

VFINX vs. RYEIX - Dividend Comparison

VFINX's dividend yield for the trailing twelve months is around 0.96%, less than RYEIX's 2.03% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
RYEIX Rydex Energy Fund	2.03%	2.51%	3.84%	2.68%	2.55%	0.50%	2.38%	0.78%	0.81%	0.71%	0.62%	0.43%
VFINX Vanguard 500 Index Fund Investor Shares	0.96%	1.02%	1.14%	1.36%	1.57%	1.15%	1.45%	1.77%	1.94%	1.69%	1.92%	1.99%

Frequently Asked Questions

Can I hold both VFINX and RYEIX in my portfolio?

VFINX and RYEIX have a correlation of 0.08, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, VFINX or RYEIX?

RYEIX has higher volatility (6.83%) compared to VFINX (4.88%). In terms of maximum drawdown, VFINX dropped -55.25% vs RYEIX's -83.50%.

Which has better risk-adjusted returns?

VFINX currently has the higher Sharpe Ratio (1.77 vs 1.75), 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.