AVUSX vs. RCKSX

Last updated Jun 4, 2026

AVUSX (Avantis U.S. Equity Fund) and RCKSX (Rock Oak Core Growth Fund) are both Large Cap Blend Equities funds. Over the past 5 years, AVUSX returned 12.85%/yr vs 7.42%/yr for RCKSX. Their correlation of 0.88 suggests significant overlap in exposure. AVUSX charges 0.15%/yr vs 1.25%/yr for RCKSX.

Performance

AVUSX vs. RCKSX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Avantis U.S. Equity Fund (AVUSX) and Rock Oak Core Growth Fund (RCKSX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, AVUSX achieves a 15.04% return, which is significantly higher than RCKSX's 14.10% return.

AVUSX

• 1D: 0.37%
• 1M: 5.20%
• YTD: 15.04%
• 6M: 15.45%
• 1Y: 32.88%
• 3Y*: 22.35%
• 5Y*: 12.85%
• 10Y*: —

RCKSX

• 1D: -0.13%
• 1M: 1.87%
• YTD: 14.10%
• 6M: 14.42%
• 1Y: 20.18%
• 3Y*: 19.62%
• 5Y*: 7.42%
• 10Y*: 10.85%

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

AVUSX vs. RCKSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
AVUSX Avantis U.S. Equity Fund	15.04%	16.44%	20.02%	21.44%	-14.42%	27.48%	18.65%	4.06%
RCKSX Rock Oak Core Growth Fund	14.10%	12.99%	15.12%	15.57%	-18.09%	9.96%	13.75%	3.30%

Correlation

The correlation between AVUSX and RCKSX is 0.71, 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	0.71
Correlation (3Y) Calculated over the trailing 3-year period	0.81
Correlation (5Y) Calculated over the trailing 5-year period	0.87
Correlation (All Time) Calculated using the full available price history since Dec 5, 2019	0.88

The correlation between AVUSX and RCKSX shifts across timeframes, from 0.71 (1 year) to 0.88 (all time), reflecting how their relationship changes across market environments.

Return for Risk

AVUSX vs. RCKSX — Risk / Return Rank

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

AVUSX

AVUSX Risk / Return Rank: 86
AVUSX Sharpe Ratio Rank: 87
AVUSX Sortino Ratio Rank: 82
AVUSX Omega Ratio Rank: 78
AVUSX Calmar Ratio Rank: 89
AVUSX Martin Ratio Rank: 93

RCKSX

RCKSX Risk / Return Rank: 56
RCKSX Sharpe Ratio Rank: 39
RCKSX Sortino Ratio Rank: 40
RCKSX Omega Ratio Rank: 34
RCKSX Calmar Ratio Rank: 93
RCKSX Martin Ratio Rank: 75

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.

AVUSX vs. RCKSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Avantis U.S. Equity Fund (AVUSX) and Rock Oak Core Growth Fund (RCKSX). 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.

	AVUSX	RCKSX	Difference
Sharpe ratio Return per unit of total volatility	2.84	1.83	+1.01
Sortino ratio Return per unit of downside risk	3.86	2.66	+1.20
Omega ratio Gain probability vs. loss probability	1.51	1.31	+0.21
Calmar ratio Return relative to maximum drawdown	4.55	5.11	-0.56
Martin ratio Return relative to average drawdown	20.62	14.18	+6.44
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

AVUSX vs. RCKSX - Sharpe Ratio Comparison

The current AVUSX Sharpe Ratio is 2.84, which is higher than the RCKSX Sharpe Ratio of 1.83. The chart below compares the historical Sharpe Ratios of AVUSX and RCKSX, 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

	AVUSX	RCKSX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.84	1.83	+1.01
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.75	0.48	+0.27
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.62	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.77	0.38	+0.39

Drawdowns

AVUSX vs. RCKSX - Drawdown Comparison

The maximum AVUSX drawdown since its inception was -36.23%, smaller than the maximum RCKSX drawdown of -57.88%. Use the drawdown chart below to compare losses from any high point for AVUSX and RCKSX.

Drawdown Indicators

	AVUSX	RCKSX	Difference
Max Drawdown Largest peak-to-trough decline	-36.23%	-57.88%	+21.65%
Max Drawdown (1Y) Largest decline over 1 year	-7.48%	-4.14%	-3.34%
Max Drawdown (3Y) Largest decline over 3 years	-19.61%	-18.22%	-1.39%
Max Drawdown (5Y) Largest decline over 5 years	-22.62%	-22.54%	-0.08%
Max Drawdown (10Y) Largest decline over 10 years	—	-33.10%	—
Current Drawdown Current decline from peak	0.00%	-0.60%	+0.60%
Average Drawdown Average peak-to-trough decline	-5.28%	-9.51%	+4.23%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.65%	1.49%	+0.16%

Volatility

AVUSX vs. RCKSX - Volatility Comparison

Avantis U.S. Equity Fund (AVUSX) and Rock Oak Core Growth Fund (RCKSX) have volatilities of 2.90% and 2.94%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	AVUSX	RCKSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.90%	2.94%	-0.04%
Volatility (6M) Calculated over the trailing 6-month period	8.81%	8.06%	+0.75%
Volatility (1Y) Calculated over the trailing 1-year period	11.99%	11.56%	+0.43%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.29%	15.66%	+1.63%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.92%	17.55%	+3.37%

AVUSX vs. RCKSX - Expense Ratio Comparison

AVUSX has a 0.15% expense ratio, which is lower than RCKSX's 1.25% expense ratio.

Dividends

AVUSX vs. RCKSX - Dividend Comparison

AVUSX's dividend yield for the trailing twelve months is around 2.30%, less than RCKSX's 5.48% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AVUSX Avantis U.S. Equity Fund	2.30%	2.64%	1.36%	1.19%	1.63%	0.92%	0.94%	0.15%	0.00%	0.00%	0.00%	0.00%
RCKSX Rock Oak Core Growth Fund	5.48%	6.26%	0.47%	0.71%	1.00%	4.31%	16.56%	3.18%	0.59%	5.91%	0.70%	3.21%

Frequently Asked Questions

Can I hold both AVUSX and RCKSX in my portfolio?

AVUSX and RCKSX have a correlation of 0.71, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, AVUSX or RCKSX?

RCKSX has higher volatility (2.94%) compared to AVUSX (2.90%). In terms of maximum drawdown, AVUSX dropped -36.23% vs RCKSX's -57.88%.

Which has better risk-adjusted returns?

AVUSX currently has the higher Sharpe Ratio (2.84 vs 1.83), 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.