PFFSX vs. RCKSX

Last updated Jun 25, 2026

PFFSX (PFG Sector Equity Business Cycle Strategy Fund) and RCKSX (Rock Oak Core Growth Fund) are both Large Cap Blend Equities funds. Over the past 5 years, PFFSX returned 14.61%/yr vs 7.84%/yr for RCKSX. Their correlation of 0.82 suggests significant overlap in exposure. PFFSX charges 2.03%/yr vs 1.25%/yr for RCKSX.

Performance

PFFSX vs. RCKSX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in PFG Sector Equity Business Cycle Strategy Fund (PFFSX) 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, PFFSX achieves a 12.01% return, which is significantly lower than RCKSX's 15.52% return.

PFFSX

• 1D: -1.36%
• 1M: -1.04%
• YTD: 12.01%
• 6M: 10.34%
• 1Y: 24.65%
• 3Y*: 22.38%
• 5Y*: 14.61%
• 10Y*: —

RCKSX

• 1D: 0.04%
• 1M: 0.64%
• YTD: 15.52%
• 6M: 13.43%
• 1Y: 19.65%
• 3Y*: 19.39%
• 5Y*: 7.84%
• 10Y*: 11.43%

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

PFFSX vs. RCKSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
PFFSX PFG Sector Equity Business Cycle Strategy Fund	12.01%	16.17%	30.14%	18.01%	-11.57%	26.30%	24.12%
RCKSX Rock Oak Core Growth Fund	15.52%	12.99%	15.12%	15.57%	-18.09%	9.96%	29.55%

Correlation

The correlation between PFFSX and RCKSX is 0.63, 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	0.63
Correlation (3Y) Calculated over the trailing 3-year period	0.73
Correlation (5Y) Calculated over the trailing 5-year period	0.82
Correlation (All Time) Calculated using the full available price history since May 1, 2020	0.82

The correlation between PFFSX and RCKSX shifts across timeframes, from 0.63 (1 year) to 0.82 (all time), reflecting how their relationship changes across market environments.

Return for Risk

PFFSX vs. RCKSX — Risk / Return Rank

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

PFFSX

PFFSX Risk / Return Rank: 56
PFFSX Sharpe Ratio Rank: 57
PFFSX Sortino Ratio Rank: 50
PFFSX Omega Ratio Rank: 53
PFFSX Calmar Ratio Rank: 58
PFFSX Martin Ratio Rank: 64

RCKSX

RCKSX Risk / Return Rank: 60
RCKSX Sharpe Ratio Rank: 45
RCKSX Sortino Ratio Rank: 46
RCKSX Omega Ratio Rank: 37
RCKSX Calmar Ratio Rank: 94
RCKSX Martin Ratio Rank: 80

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.

PFFSX vs. RCKSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for PFG Sector Equity Business Cycle Strategy Fund (PFFSX) 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.

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.

	PFFSX	RCKSX	Difference
Sharpe ratio: Return per unit of total volatility	1.89	1.75	+0.14
Sortino ratio: Return per unit of downside risk	2.54	2.52	+0.02
Omega ratio: Gain probability vs. loss probability	1.34	1.29	+0.05
Calmar ratio: Return relative to maximum drawdown	2.62	4.90	-2.28
Martin ratio: Return relative to average drawdown	10.94	13.53	-2.59

PFFSX vs. RCKSX - Sharpe Ratio Comparison

The current PFFSX Sharpe Ratio is 1.89, which is comparable to the RCKSX Sharpe Ratio of 1.75. The chart below compares the historical Sharpe Ratios of PFFSX 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.

Drawdowns

PFFSX vs. RCKSX - Drawdown Comparison

The maximum PFFSX drawdown since its inception was -24.92%, smaller than the maximum RCKSX drawdown of -57.88%. Use the drawdown chart below to compare losses from any high point for PFFSX and RCKSX.

Drawdown Indicators

	PFFSX	RCKSX	Difference
Max Drawdown Largest peak-to-trough decline	-24.92%	-57.88%	+32.96%
Max Drawdown (1Y) Largest decline over 1 year	-10.11%	-4.14%	-5.97%
Max Drawdown (3Y) Largest decline over 3 years	-21.45%	-18.22%	-3.23%
Max Drawdown (5Y) Largest decline over 5 years	-24.92%	-22.54%	-2.38%
Max Drawdown (10Y) Largest decline over 10 years	—	-33.10%	—
Current Drawdown Current decline from peak	-3.00%	-0.42%	-2.58%
Average Drawdown Average peak-to-trough decline	-5.94%	-9.48%	+3.54%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.41%	1.50%	+0.91%

Volatility

PFFSX vs. RCKSX - Volatility Comparison

PFG Sector Equity Business Cycle Strategy Fund (PFFSX) has a higher volatility of 5.24% compared to Rock Oak Core Growth Fund (RCKSX) at 3.27%. This indicates that PFFSX's price experiences larger fluctuations and is considered to be riskier than RCKSX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PFFSX	RCKSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.24%	3.27%	+1.97%
Volatility (6M) Calculated over the trailing 6-month period	10.91%	8.06%	+2.85%
Volatility (1Y) Calculated over the trailing 1-year period	14.07%	11.73%	+2.34%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.88%	15.64%	+3.24%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.81%	17.49%	+1.32%

PFFSX vs. RCKSX - Expense Ratio Comparison

PFFSX has a 2.03% expense ratio, which is higher than RCKSX's 1.25% expense ratio.

Dividends

PFFSX vs. RCKSX - Dividend Comparison

PFFSX's dividend yield for the trailing twelve months is around 15.35%, more than RCKSX's 5.42% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
PFFSX PFG Sector Equity Business Cycle Strategy Fund	15.35%	17.19%	19.78%	2.40%	10.90%	6.73%	5.51%	0.00%	0.00%	0.00%	0.00%	0.00%
RCKSX Rock Oak Core Growth Fund	5.42%	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 PFFSX and RCKSX in my portfolio?

PFFSX and RCKSX have a correlation of 0.63, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, PFFSX or RCKSX?

PFFSX has higher volatility (5.24%) compared to RCKSX (3.27%). In terms of maximum drawdown, PFFSX dropped -24.92% vs RCKSX's -57.88%.

Which has better risk-adjusted returns?

PFFSX currently has the higher Sharpe Ratio (1.89 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.