BFSAX vs. RCKSX

Last updated Jun 5, 2026

BFSAX (BFS Equity Fund) and RCKSX (Rock Oak Core Growth Fund) are both Large Cap Blend Equities funds. A 0.76 correlation means they provide meaningful diversification when combined. Both charge a 1.25% expense ratio.

Performance

BFSAX vs. RCKSX - Performance Comparison

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

Returns By Period

BFSAX

• 1D: —
• 1M: —
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

RCKSX

• 1D: 0.43%
• 1M: 1.47%
• YTD: 14.59%
• 6M: 14.70%
• 1Y: 20.99%
• 3Y*: 19.79%
• 5Y*: 7.32%
• 10Y*: 10.90%

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

BFSAX vs. RCKSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BFSAX BFS Equity Fund	0.00%	0.00%	0.00%	8.75%	-18.53%	24.95%	10.46%	32.88%	-2.96%	20.97%
RCKSX Rock Oak Core Growth Fund	14.59%	12.99%	15.12%	15.57%	-18.09%	9.96%	13.75%	19.05%	-2.14%	22.69%

Correlation

The correlation between BFSAX and RCKSX is 0.76, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (3Y) Calculated over the trailing 3-year period	0.24
Correlation (5Y) Calculated over the trailing 5-year period	0.60
Correlation (10Y) Calculated over the trailing 10-year period	0.73
Correlation (All Time) Calculated using the full available price history since Nov 11, 2013	0.76

The correlation between BFSAX and RCKSX shifts across timeframes, from 0.23 (3 years) to 0.76 (all time), reflecting how their relationship changes across market environments.

Return for Risk

BFSAX vs. RCKSX — Risk / Return Rank

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

RCKSX

RCKSX Risk / Return Rank: 56
RCKSX Sharpe Ratio Rank: 39
RCKSX Sortino Ratio Rank: 40
RCKSX Omega Ratio Rank: 33
RCKSX Calmar Ratio Rank: 92
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.

BFSAX vs. RCKSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for BFS Equity Fund (BFSAX) 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.

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

Sharpe Ratios by Period

	BFSAX	RCKSX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	1.80	—
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.47	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.62	—
Sharpe Ratio (All Time) Calculated using the full available price history	—	0.38	—

Drawdowns

Drawdown Indicators

	BFSAX	RCKSX	Difference
Max Drawdown Largest peak-to-trough decline	—	-57.88%	—
Max Drawdown (1Y) Largest decline over 1 year	—	-4.14%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-18.22%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-22.54%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-33.10%	—
Current Drawdown Current decline from peak	—	-0.17%	—
Average Drawdown Average peak-to-trough decline	—	-9.50%	—
Ulcer Index Depth and duration of drawdowns from previous peaks	—	1.49%	—

Volatility

Volatility by Period

	BFSAX	RCKSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	2.96%	—
Volatility (6M) Calculated over the trailing 6-month period	—	7.99%	—
Volatility (1Y) Calculated over the trailing 1-year period	—	11.56%	—
Volatility (5Y) Calculated over the trailing 5-year period, annualized	—	15.66%	—
Volatility (10Y) Calculated over the trailing 10-year period, annualized	—	17.54%	—

BFSAX vs. RCKSX - Expense Ratio Comparison

Both BFSAX and RCKSX have an expense ratio of 1.25%.

Dividends

BFSAX vs. RCKSX - Dividend Comparison

BFSAX has not paid dividends to shareholders, while RCKSX's dividend yield for the trailing twelve months is around 5.46%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BFSAX BFS Equity Fund	0.00%	0.00%	0.00%	0.00%	1.14%	9.63%	1.50%	1.69%	3.63%	0.32%	0.45%	0.30%
RCKSX Rock Oak Core Growth Fund	5.46%	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 BFSAX and RCKSX in my portfolio?

BFSAX and RCKSX have a correlation of 0.76, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.