RPEAX vs. TANDX

Last updated Jul 15, 2026

RPEAX (Davis Opportunity Fund) and TANDX (Castle Tandem Fund) are both Large Cap Blend Equities funds. Over the past 5 years, RPEAX returned 13.89%/yr vs 2.02%/yr for TANDX. A 0.68 correlation means they provide meaningful diversification when combined. RPEAX charges 0.93%/yr vs 1.59%/yr for TANDX.

Performance

RPEAX vs. TANDX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Davis Opportunity Fund (RPEAX) and Castle Tandem Fund (TANDX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RPEAX achieves a 11.91% return, which is significantly higher than TANDX's -9.48% return.

RPEAX

• 1D: -0.20%
• 1M: 0.32%
• 6M: 9.04%
• YTD: 11.91%
• 1Y: 24.23%
• 3Y*: 25.03%
• 5Y*: 13.89%
• 10Y*: 12.98%

TANDX

• 1D: 0.66%
• 1M: 3.11%
• 6M: -9.89%
• YTD: -9.48%
• 1Y: -11.73%
• 3Y*: 1.46%
• 5Y*: 2.02%
• 10Y*: —

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

RPEAX vs. TANDX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
RPEAX Davis Opportunity Fund	11.91%	21.86%	32.82%	22.21%	-14.12%	24.92%	12.78%	10.96%
TANDX Castle Tandem Fund	-9.48%	3.67%	7.66%	8.42%	-7.87%	19.03%	13.39%	12.57%

Correlation

The correlation between RPEAX and TANDX is 0.46, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.46
Correlation (3Y) Calculated over the trailing 3-year period	0.54
Correlation (5Y) Calculated over the trailing 5-year period	0.65
Correlation (All Time) Calculated using the full available price history since Mar 22, 2019	0.68

Over the past year, the correlation between RPEAX and TANDX has dropped to 0.46 - well below their long-term average of 0.68, suggesting their price drivers have been diverging.

Return for Risk

RPEAX vs. TANDX — Risk / Return Rank

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

RPEAX

RPEAX Risk / Return Rank: 64
RPEAX Sharpe Ratio Rank: 71
RPEAX Sortino Ratio Rank: 66
RPEAX Omega Ratio Rank: 67
RPEAX Calmar Ratio Rank: 63
RPEAX Martin Ratio Rank: 55

TANDX

TANDX Risk / Return Rank: 0
TANDX Sharpe Ratio Rank: 0
TANDX Sortino Ratio Rank: 0
TANDX Omega Ratio Rank: 0
TANDX Calmar Ratio Rank: 1
TANDX Martin Ratio Rank: 0

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. TANDX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Davis Opportunity Fund (RPEAX) and Castle Tandem Fund (TANDX). 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.

	RPEAX	TANDX	Difference
Sharpe ratio: Return per unit of total volatility	1.85	-1.15	+3.00
Sortino ratio: Return per unit of downside risk	2.53	-1.56	+4.08
Omega ratio: Gain probability vs. loss probability	1.33	0.82	+0.51
Calmar ratio: Return relative to maximum drawdown	2.41	-0.68	+3.09
Martin ratio: Return relative to average drawdown	8.59	-1.37	+9.96

RPEAX vs. TANDX - Sharpe Ratio Comparison

The current RPEAX Sharpe Ratio is 1.85, which is higher than the TANDX Sharpe Ratio of -1.15. The chart below compares the historical Sharpe Ratios of RPEAX and TANDX, 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

RPEAX vs. TANDX - Drawdown Comparison

The maximum RPEAX drawdown since its inception was -59.71%, smaller than the maximum TANDX drawdown of -93.98%. Use the drawdown chart below to compare losses from any high point for RPEAX and TANDX.

Drawdown Indicators

	RPEAX	TANDX	Difference
Max Drawdown Largest peak-to-trough decline	-59.71%	-93.98%	+34.27%
Max Drawdown (1Y) Largest decline over 1 year	-10.15%	-16.88%	+6.73%
Max Drawdown (3Y) Largest decline over 3 years	-25.44%	-93.98%	+68.54%
Max Drawdown (5Y) Largest decline over 5 years	-26.03%	-93.98%	+67.95%
Max Drawdown (10Y) Largest decline over 10 years	-39.78%	—	—
Current Drawdown Current decline from peak	-1.18%	-93.67%	+92.49%
Average Drawdown Average peak-to-trough decline	-10.45%	-21.33%	+10.88%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.84%	8.38%	-5.54%

Volatility

RPEAX vs. TANDX - Volatility Comparison

The current volatility for Davis Opportunity Fund (RPEAX) is 2.93%, while Castle Tandem Fund (TANDX) has a volatility of 4.01%. This indicates that RPEAX experiences smaller price fluctuations and is considered to be less risky than TANDX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RPEAX	TANDX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.93%	4.01%	-1.08%
Volatility (6M) Calculated over the trailing 6-month period	9.89%	8.06%	+1.83%
Volatility (1Y) Calculated over the trailing 1-year period	13.21%	10.03%	+3.18%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	24.53%	596.04%	-571.51%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.67%	492.88%	-471.21%

RPEAX vs. TANDX - Expense Ratio Comparison

RPEAX has a 0.93% expense ratio, which is lower than TANDX's 1.59% expense ratio.

Dividends

RPEAX vs. TANDX - Dividend Comparison

RPEAX's dividend yield for the trailing twelve months is around 12.43%, more than TANDX's 6.82% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
RPEAX Davis Opportunity Fund	12.43%	13.91%	33.00%	6.17%	8.47%	9.23%	2.88%	4.86%	0.64%	2.70%	2.44%	21.42%
TANDX Castle Tandem Fund	6.82%	6.17%	3.71%	2.10%	1.48%	4.57%	0.33%	0.37%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both RPEAX and TANDX in my portfolio?

RPEAX and TANDX have a correlation of 0.46, 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 TANDX?

TANDX has higher volatility (4.01%) compared to RPEAX (2.93%). In terms of maximum drawdown, RPEAX dropped -59.71% vs TANDX's -93.98%.

Which has better risk-adjusted returns?

RPEAX currently has the higher Sharpe Ratio (1.85 vs -1.15), 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.