RPEAX vs. SSSYX

Last updated Jun 4, 2026

RPEAX (Davis Opportunity Fund) and SSSYX (State Street Equity 500 Index Fund Class K) are both Large Cap Blend Equities funds. Over the past 10 years, RPEAX returned 13.19%/yr vs 15.61%/yr for SSSYX. Their correlation of 0.85 suggests significant overlap in exposure. RPEAX charges 0.93%/yr vs 0.02%/yr for SSSYX.

Performance

RPEAX vs. SSSYX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Davis Opportunity Fund (RPEAX) and State Street Equity 500 Index Fund Class K (SSSYX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RPEAX achieves a 13.25% return, which is significantly higher than SSSYX's 11.69% return. Over the past 10 years, RPEAX has underperformed SSSYX with an annualized return of 13.19%, while SSSYX has yielded a comparatively higher 15.61% annualized return.

RPEAX

• 1D: 0.65%
• 1M: 5.36%
• YTD: 13.25%
• 6M: 14.56%
• 1Y: 32.69%
• 3Y*: 28.13%
• 5Y*: 13.66%
• 10Y*: 13.19%

SSSYX

• 1D: 0.14%
• 1M: 5.79%
• YTD: 11.69%
• 6M: 11.73%
• 1Y: 28.94%
• 3Y*: 22.73%
• 5Y*: 14.24%
• 10Y*: 15.61%

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

RPEAX vs. SSSYX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RPEAX Davis Opportunity Fund	13.25%	21.86%	32.82%	22.21%	-14.12%	24.92%	12.78%	25.06%	-23.66%	23.09%
SSSYX State Street Equity 500 Index Fund Class K	11.69%	17.81%	24.99%	26.27%	-18.16%	28.51%	18.31%	31.38%	-4.38%	21.61%

Correlation

The correlation between RPEAX and SSSYX is 0.78, 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	0.78
Correlation (3Y) Calculated over the trailing 3-year period	0.79
Correlation (5Y) Calculated over the trailing 5-year period	0.84
Correlation (10Y) Calculated over the trailing 10-year period	0.84
Correlation (All Time) Calculated using the full available price history since Sep 19, 2014	0.85

The correlation between RPEAX and SSSYX has been stable across timeframes, ranging from 0.78 to 0.85 - a consistent structural relationship.

Return for Risk

RPEAX vs. SSSYX — Risk / Return Rank

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

RPEAX

RPEAX Risk / Return Rank: 69
RPEAX Sharpe Ratio Rank: 77
RPEAX Sortino Ratio Rank: 68
RPEAX Omega Ratio Rank: 67
RPEAX Calmar Ratio Rank: 72
RPEAX Martin Ratio Rank: 61

SSSYX

SSSYX Risk / Return Rank: 73
SSSYX Sharpe Ratio Rank: 75
SSSYX Sortino Ratio Rank: 67
SSSYX Omega Ratio Rank: 67
SSSYX Calmar Ratio Rank: 74
SSSYX 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.

RPEAX vs. SSSYX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Davis Opportunity Fund (RPEAX) and State Street Equity 500 Index Fund Class K (SSSYX). 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.

	RPEAX	SSSYX	Difference
Sharpe ratio: Return per unit of total volatility	2.56	2.52	+0.04
Sortino ratio: Return per unit of downside risk	3.44	3.42	+0.02
Omega ratio: Gain probability vs. loss probability	1.46	1.46	0.00
Calmar ratio: Return relative to maximum drawdown	3.31	3.36	-0.05
Martin ratio: Return relative to average drawdown	12.03	15.69	-3.65
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

RPEAX vs. SSSYX - Sharpe Ratio Comparison

The current RPEAX Sharpe Ratio is 2.56, which is comparable to the SSSYX Sharpe Ratio of 2.52. The chart below compares the historical Sharpe Ratios of RPEAX and SSSYX, 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

	RPEAX	SSSYX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.56	2.52	+0.04
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.56	0.85	-0.29
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.61	0.13	+0.48
Sharpe Ratio (All Time) Calculated using the full available price history	0.56	0.12	+0.44

Drawdowns

RPEAX vs. SSSYX - Drawdown Comparison

The maximum RPEAX drawdown since its inception was -59.71%, smaller than the maximum SSSYX drawdown of -91.48%. Use the drawdown chart below to compare losses from any high point for RPEAX and SSSYX.

Drawdown Indicators

	RPEAX	SSSYX	Difference
Max Drawdown Largest peak-to-trough decline	-59.71%	-91.48%	+31.77%
Max Drawdown (1Y) Largest decline over 1 year	-10.15%	-8.88%	-1.27%
Max Drawdown (3Y) Largest decline over 3 years	-25.44%	-18.74%	-6.70%
Max Drawdown (5Y) Largest decline over 5 years	-26.03%	-24.49%	-1.54%
Max Drawdown (10Y) Largest decline over 10 years	-39.78%	-91.48%	+51.70%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-10.48%	-4.15%	-6.33%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.78%	1.90%	+0.88%

Volatility

RPEAX vs. SSSYX - Volatility Comparison

Davis Opportunity Fund (RPEAX) has a higher volatility of 3.13% compared to State Street Equity 500 Index Fund Class K (SSSYX) at 2.82%. This indicates that RPEAX's price experiences larger fluctuations and is considered to be riskier than SSSYX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RPEAX	SSSYX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.13%	2.82%	+0.31%
Volatility (6M) Calculated over the trailing 6-month period	9.62%	8.96%	+0.66%
Volatility (1Y) Calculated over the trailing 1-year period	13.11%	11.85%	+1.26%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	24.53%	16.88%	+7.65%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.75%	124.46%	-102.71%

RPEAX vs. SSSYX - Expense Ratio Comparison

RPEAX has a 0.93% expense ratio, which is higher than SSSYX's 0.02% expense ratio.

Dividends

RPEAX vs. SSSYX - Dividend Comparison

RPEAX's dividend yield for the trailing twelve months is around 12.28%, more than SSSYX's 1.29% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
RPEAX Davis Opportunity Fund	12.28%	13.91%	33.00%	6.17%	8.47%	9.23%	2.88%	4.86%	0.64%	2.70%	2.44%	21.42%
SSSYX State Street Equity 500 Index Fund Class K	1.29%	1.44%	1.63%	1.78%	2.16%	2.76%	1.86%	4.44%	5.18%	5.94%	2.07%	1.84%

Frequently Asked Questions

Can I hold both RPEAX and SSSYX in my portfolio?

RPEAX and SSSYX have a correlation of 0.78, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RPEAX or SSSYX?

RPEAX has higher volatility (3.13%) compared to SSSYX (2.82%). In terms of maximum drawdown, RPEAX dropped -59.71% vs SSSYX's -91.48%.

Which has better risk-adjusted returns?

RPEAX currently has the higher Sharpe Ratio (2.56 vs 2.52), 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.