BOGSX vs. VOO

Last updated Jun 23, 2026

BOGSX (Black Oak Emerging Technology Fund) and VOO (Vanguard S&P 500 ETF) are both funds - BOGSX is a Technology Equities fund managed by Oak Associates, while VOO is a S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, BOGSX returned 18.06%/yr vs 15.77%/yr for VOO. Their correlation of 0.83 suggests significant overlap in exposure. BOGSX charges 1.03%/yr vs 0.03%/yr for VOO.

Performance

BOGSX vs. VOO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Black Oak Emerging Technology Fund (BOGSX) and Vanguard S&P 500 ETF (VOO). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BOGSX achieves a 45.03% return, which is significantly higher than VOO's 9.75% return. Over the past 10 years, BOGSX has outperformed VOO with an annualized return of 18.06%, while VOO has yielded a comparatively lower 15.77% annualized return.

BOGSX

• 1D: 3.14%
• 1M: 7.36%
• YTD: 45.03%
• 6M: 41.86%
• 1Y: 63.83%
• 3Y*: 24.28%
• 5Y*: 13.70%
• 10Y*: 18.06%

VOO

• 1D: -0.29%
• 1M: 0.08%
• YTD: 9.75%
• 6M: 9.30%
• 1Y: 26.77%
• 3Y*: 21.36%
• 5Y*: 13.58%
• 10Y*: 15.77%

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

BOGSX vs. VOO - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BOGSX Black Oak Emerging Technology Fund	45.03%	19.06%	9.25%	17.79%	-27.30%	26.89%	45.16%	38.20%	-4.94%	19.05%
VOO Vanguard S&P 500 ETF	9.75%	17.82%	24.98%	26.32%	-18.17%	28.79%	18.32%	31.37%	-4.50%	21.77%

Correlation

The correlation between BOGSX and VOO is 0.82, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.82
Correlation (3Y) Calculated over the trailing 3-year period	0.85
Correlation (5Y) Calculated over the trailing 5-year period	0.86
Correlation (10Y) Calculated over the trailing 10-year period	0.84
Correlation (All Time) Calculated using the full available price history since Sep 9, 2010	0.83

The correlation between BOGSX and VOO has been stable across timeframes, ranging from 0.82 to 0.86 - a consistent structural relationship.

Return for Risk

BOGSX vs. VOO — Risk / Return Rank

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

BOGSX

BOGSX Risk / Return Rank: 86
BOGSX Sharpe Ratio Rank: 89
BOGSX Sortino Ratio Rank: 76
BOGSX Omega Ratio Rank: 75
BOGSX Calmar Ratio Rank: 96
BOGSX Martin Ratio Rank: 94

VOO

VOO Risk / Return Rank: 68
VOO Sharpe Ratio Rank: 70
VOO Sortino Ratio Rank: 67
VOO Omega Ratio Rank: 69
VOO Calmar Ratio Rank: 63
VOO Martin Ratio Rank: 74

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.

BOGSX vs. VOO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Black Oak Emerging Technology Fund (BOGSX) and Vanguard S&P 500 ETF (VOO). 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.

	BOGSX	VOO	Difference
Sharpe ratio: Return per unit of total volatility	2.71	2.17	+0.54
Sortino ratio: Return per unit of downside risk	3.33	2.93	+0.40
Omega ratio: Gain probability vs. loss probability	1.44	1.39	+0.05
Calmar ratio: Return relative to maximum drawdown	5.71	3.02	+2.69
Martin ratio: Return relative to average drawdown	18.93	13.58	+5.35

BOGSX vs. VOO - Sharpe Ratio Comparison

The current BOGSX Sharpe Ratio is 2.71, which is comparable to the VOO Sharpe Ratio of 2.17. The chart below compares the historical Sharpe Ratios of BOGSX and VOO, 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

BOGSX vs. VOO - Drawdown Comparison

The maximum BOGSX drawdown since its inception was -92.80%, which is greater than VOO's maximum drawdown of -33.99%. Use the drawdown chart below to compare losses from any high point for BOGSX and VOO.

Drawdown Indicators

	BOGSX	VOO	Difference
Max Drawdown Largest peak-to-trough decline	-92.80%	-33.99%	-58.81%
Max Drawdown (1Y) Largest decline over 1 year	-11.04%	-8.90%	-2.14%
Max Drawdown (3Y) Largest decline over 3 years	-24.78%	-18.69%	-6.09%
Max Drawdown (5Y) Largest decline over 5 years	-33.93%	-24.52%	-9.41%
Max Drawdown (10Y) Largest decline over 10 years	-33.93%	-33.99%	+0.06%
Current Drawdown Current decline from peak	0.00%	-1.74%	+1.74%
Average Drawdown Average peak-to-trough decline	-58.85%	-3.68%	-55.17%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.33%	1.98%	+1.35%

Volatility

BOGSX vs. VOO - Volatility Comparison

Black Oak Emerging Technology Fund (BOGSX) has a higher volatility of 11.11% compared to Vanguard S&P 500 ETF (VOO) at 4.60%. This indicates that BOGSX's price experiences larger fluctuations and is considered to be riskier than VOO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BOGSX	VOO	Difference
Volatility (1M) Calculated over the trailing 1-month period	11.11%	4.60%	+6.51%
Volatility (6M) Calculated over the trailing 6-month period	19.11%	9.73%	+9.38%
Volatility (1Y) Calculated over the trailing 1-year period	23.29%	12.39%	+10.90%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	25.53%	16.90%	+8.63%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	24.77%	18.05%	+6.72%

BOGSX vs. VOO - Expense Ratio Comparison

BOGSX has a 1.03% expense ratio, which is higher than VOO's 0.03% expense ratio.

Dividends

BOGSX vs. VOO - Dividend Comparison

BOGSX's dividend yield for the trailing twelve months is around 3.97%, more than VOO's 1.04% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BOGSX Black Oak Emerging Technology Fund	3.97%	5.76%	7.96%	3.79%	1.87%	11.31%	6.30%	5.47%	11.71%	7.71%	4.00%	3.09%
VOO Vanguard S&P 500 ETF	1.04%	1.13%	1.24%	1.46%	1.69%	1.25%	1.54%	1.88%	2.06%	1.78%	2.02%	2.10%

Frequently Asked Questions

Can I hold both BOGSX and VOO in my portfolio?

BOGSX and VOO have a correlation of 0.82, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BOGSX or VOO?

BOGSX has higher volatility (11.11%) compared to VOO (4.60%). In terms of maximum drawdown, BOGSX dropped -92.80% vs VOO's -33.99%.

Which has better risk-adjusted returns?

BOGSX currently has the higher Sharpe Ratio (2.71 vs 2.17), 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.