PRPFX vs. BOGSX

Last updated Jun 4, 2026

PRPFX (Permanent Portfolio Permanent Portfolio) and BOGSX (Black Oak Emerging Technology Fund) are both mutual funds - PRPFX is a Diversified Portfolio fund managed by Permanent Portfolio, while BOGSX is a Technology Equities fund managed by Oak Associates. Over the past 10 years, PRPFX returned 11.12%/yr vs 17.86%/yr for BOGSX. A 0.55 correlation means they provide meaningful diversification when combined. PRPFX charges 0.81%/yr vs 1.03%/yr for BOGSX.

Performance

PRPFX vs. BOGSX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Permanent Portfolio Permanent Portfolio (PRPFX) and Black Oak Emerging Technology Fund (BOGSX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, PRPFX achieves a 7.27% return, which is significantly lower than BOGSX's 43.19% return. Over the past 10 years, PRPFX has underperformed BOGSX with an annualized return of 11.12%, while BOGSX has yielded a comparatively higher 17.86% annualized return.

PRPFX

• 1D: 0.26%
• 1M: 1.48%
• YTD: 7.27%
• 6M: 9.63%
• 1Y: 24.05%
• 3Y*: 21.67%
• 5Y*: 11.79%
• 10Y*: 11.12%

BOGSX

• 1D: 2.19%
• 1M: 15.43%
• YTD: 43.19%
• 6M: 42.65%
• 1Y: 62.39%
• 3Y*: 25.08%
• 5Y*: 13.99%
• 10Y*: 17.86%

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

PRPFX vs. BOGSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
PRPFX Permanent Portfolio Permanent Portfolio	7.27%	28.78%	19.36%	11.96%	-5.48%	10.87%	18.80%	19.20%	-7.02%	11.42%
BOGSX Black Oak Emerging Technology Fund	43.19%	19.06%	9.25%	17.79%	-27.30%	26.89%	45.16%	38.20%	-4.94%	19.05%

Correlation

The correlation between PRPFX and BOGSX is 0.45, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.45
Correlation (3Y) Calculated over the trailing 3-year period	0.56
Correlation (5Y) Calculated over the trailing 5-year period	0.62
Correlation (10Y) Calculated over the trailing 10-year period	0.61
Correlation (All Time) Calculated using the full available price history since Jan 2, 2001	0.55

The correlation between PRPFX and BOGSX shifts across timeframes, from 0.45 (1 year) to 0.62 (5 years), reflecting how their relationship changes across market environments.

Return for Risk

PRPFX vs. BOGSX — Risk / Return Rank

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

PRPFX

PRPFX Risk / Return Rank: 46
PRPFX Sharpe Ratio Rank: 44
PRPFX Sortino Ratio Rank: 33
PRPFX Omega Ratio Rank: 53
PRPFX Calmar Ratio Rank: 61
PRPFX Martin Ratio Rank: 38

BOGSX

BOGSX Risk / Return Rank: 86
BOGSX Sharpe Ratio Rank: 91
BOGSX Sortino Ratio Rank: 79
BOGSX Omega Ratio Rank: 74
BOGSX Calmar Ratio Rank: 95
BOGSX Martin Ratio Rank: 93

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.

PRPFX vs. BOGSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Permanent Portfolio Permanent Portfolio (PRPFX) and Black Oak Emerging Technology Fund (BOGSX). 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.

	PRPFX	BOGSX	Difference
Sharpe ratio: Return per unit of total volatility	1.95	3.03	-1.08
Sortino ratio: Return per unit of downside risk	2.39	3.76	-1.37
Omega ratio: Gain probability vs. loss probability	1.40	1.49	-0.09
Calmar ratio: Return relative to maximum drawdown	3.00	5.90	-2.90
Martin ratio: Return relative to average drawdown	8.36	20.24	-11.88
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

PRPFX vs. BOGSX - Sharpe Ratio Comparison

The current PRPFX Sharpe Ratio is 1.95, which is lower than the BOGSX Sharpe Ratio of 3.03. The chart below compares the historical Sharpe Ratios of PRPFX and BOGSX, 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

	PRPFX	BOGSX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.95	3.03	-1.08
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	1.07	0.56	+0.51
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	1.05	0.73	+0.32
Sharpe Ratio (All Time) Calculated using the full available price history	0.81	0.11	+0.70

Drawdowns

PRPFX vs. BOGSX - Drawdown Comparison

The maximum PRPFX drawdown since its inception was -27.16%, smaller than the maximum BOGSX drawdown of -92.80%. Use the drawdown chart below to compare losses from any high point for PRPFX and BOGSX.

Drawdown Indicators

	PRPFX	BOGSX	Difference
Max Drawdown Largest peak-to-trough decline	-27.16%	-92.80%	+65.64%
Max Drawdown (1Y) Largest decline over 1 year	-8.10%	-11.04%	+2.94%
Max Drawdown (3Y) Largest decline over 3 years	-8.19%	-24.78%	+16.59%
Max Drawdown (5Y) Largest decline over 5 years	-15.49%	-33.93%	+18.44%
Max Drawdown (10Y) Largest decline over 10 years	-20.84%	-33.93%	+13.09%
Current Drawdown Current decline from peak	-4.04%	0.00%	-4.04%
Average Drawdown Average peak-to-trough decline	-3.52%	-58.96%	+55.44%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.90%	3.21%	-0.31%

Volatility

PRPFX vs. BOGSX - Volatility Comparison

The current volatility for Permanent Portfolio Permanent Portfolio (PRPFX) is 2.71%, while Black Oak Emerging Technology Fund (BOGSX) has a volatility of 6.71%. This indicates that PRPFX experiences smaller price fluctuations and is considered to be less risky than BOGSX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PRPFX	BOGSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.71%	6.71%	-4.00%
Volatility (6M) Calculated over the trailing 6-month period	11.20%	16.73%	-5.53%
Volatility (1Y) Calculated over the trailing 1-year period	12.48%	21.46%	-8.98%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	11.06%	25.22%	-14.16%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	10.61%	24.61%	-14.00%

PRPFX vs. BOGSX - Expense Ratio Comparison

PRPFX has a 0.81% expense ratio, which is lower than BOGSX's 1.03% expense ratio.

Dividends

PRPFX vs. BOGSX - Dividend Comparison

PRPFX's dividend yield for the trailing twelve months is around 3.05%, less than BOGSX's 4.02% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BOGSX Black Oak Emerging Technology Fund	4.02%	5.76%	7.96%	3.79%	1.87%	11.31%	6.30%	5.47%	11.71%	7.71%	4.00%	3.09%
PRPFX Permanent Portfolio Permanent Portfolio	3.05%	3.27%	1.86%	1.39%	1.58%	2.05%	5.38%	4.69%	6.90%	2.14%	0.95%	7.06%

Frequently Asked Questions

Can I hold both PRPFX and BOGSX in my portfolio?

PRPFX and BOGSX have a correlation of 0.45, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, PRPFX or BOGSX?

BOGSX has higher volatility (6.71%) compared to PRPFX (2.71%). In terms of maximum drawdown, PRPFX dropped -27.16% vs BOGSX's -92.80%.

Which has better risk-adjusted returns?

BOGSX currently has the higher Sharpe Ratio (3.03 vs 1.95), 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.