BOGSX vs. WSTAX

Last updated Jun 5, 2026

BOGSX (Black Oak Emerging Technology Fund) and WSTAX (Nomura Science and Technology Fund Class A) are both Technology Equities funds. Over the past 10 years, BOGSX returned 17.86%/yr vs 24.73%/yr for WSTAX. Their correlation of 0.86 suggests significant overlap in exposure. BOGSX charges 1.03%/yr vs 1.17%/yr for WSTAX.

Performance

BOGSX vs. WSTAX - Performance Comparison

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

Returns By Period

The year-to-date returns for both stocks are quite close, with BOGSX having a 43.19% return and WSTAX slightly lower at 41.67%. Over the past 10 years, BOGSX has underperformed WSTAX with an annualized return of 17.86%, while WSTAX has yielded a comparatively higher 24.73% annualized return.

BOGSX

• 1D: 0.00%
• 1M: 13.74%
• YTD: 43.19%
• 6M: 42.16%
• 1Y: 62.18%
• 3Y*: 25.08%
• 5Y*: 13.51%
• 10Y*: 17.86%

WSTAX

• 1D: -0.10%
• 1M: 13.98%
• YTD: 41.67%
• 6M: 42.23%
• 1Y: 75.31%
• 3Y*: 52.16%
• 5Y*: 25.06%
• 10Y*: 24.73%

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

BOGSX vs. WSTAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
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%
WSTAX Nomura Science and Technology Fund Class A	41.67%	33.91%	59.64%	40.44%	-32.50%	14.19%	36.12%	50.35%	-5.23%	32.77%

Correlation

The correlation between BOGSX and WSTAX is 0.86, 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	0.86
Correlation (3Y) Calculated over the trailing 3-year period	0.86
Correlation (5Y) Calculated over the trailing 5-year period	0.89
Correlation (10Y) Calculated over the trailing 10-year period	0.90
Correlation (All Time) Calculated using the full available price history since Jan 2, 2001	0.86

The correlation between BOGSX and WSTAX has been stable across timeframes, ranging from 0.86 to 0.90 - a consistent structural relationship.

Return for Risk

BOGSX vs. WSTAX — Risk / Return Rank

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

BOGSX

BOGSX Risk / Return Rank: 85
BOGSX Sharpe Ratio Rank: 89
BOGSX Sortino Ratio Rank: 76
BOGSX Omega Ratio Rank: 72
BOGSX Calmar Ratio Rank: 95
BOGSX Martin Ratio Rank: 93

WSTAX

WSTAX Risk / Return Rank: 86
WSTAX Sharpe Ratio Rank: 94
WSTAX Sortino Ratio Rank: 79
WSTAX Omega Ratio Rank: 79
WSTAX Calmar Ratio Rank: 90
WSTAX Martin Ratio Rank: 88

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. WSTAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Black Oak Emerging Technology Fund (BOGSX) and Nomura Science and Technology Fund Class A (WSTAX). 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.

	BOGSX	WSTAX	Difference
Sharpe ratio: Return per unit of total volatility	2.93	3.25	-0.32
Sortino ratio: Return per unit of downside risk	3.65	3.80	-0.14
Omega ratio: Gain probability vs. loss probability	1.47	1.52	-0.05
Calmar ratio: Return relative to maximum drawdown	5.68	4.61	+1.07
Martin ratio: Return relative to average drawdown	19.50	16.88	+2.62
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BOGSX vs. WSTAX - Sharpe Ratio Comparison

The current BOGSX Sharpe Ratio is 2.93, which is comparable to the WSTAX Sharpe Ratio of 3.25. The chart below compares the historical Sharpe Ratios of BOGSX and WSTAX, 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

	BOGSX	WSTAX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.93	3.25	-0.32
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.54	0.68	-0.14
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.73	0.81	-0.08
Sharpe Ratio (All Time) Calculated using the full available price history	0.11	0.53	-0.42

Drawdowns

BOGSX vs. WSTAX - Drawdown Comparison

The maximum BOGSX drawdown since its inception was -92.80%, which is greater than WSTAX's maximum drawdown of -55.39%. Use the drawdown chart below to compare losses from any high point for BOGSX and WSTAX.

Drawdown Indicators

	BOGSX	WSTAX	Difference
Max Drawdown Largest peak-to-trough decline	-92.80%	-55.39%	-37.41%
Max Drawdown (1Y) Largest decline over 1 year	-11.04%	-16.73%	+5.69%
Max Drawdown (3Y) Largest decline over 3 years	-24.78%	-27.35%	+2.57%
Max Drawdown (5Y) Largest decline over 5 years	-33.93%	-55.39%	+21.46%
Max Drawdown (10Y) Largest decline over 10 years	-33.93%	-55.39%	+21.46%
Current Drawdown Current decline from peak	0.00%	-0.10%	+0.10%
Average Drawdown Average peak-to-trough decline	-58.95%	-14.94%	-44.01%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.21%	4.56%	-1.35%

Volatility

BOGSX vs. WSTAX - Volatility Comparison

The current volatility for Black Oak Emerging Technology Fund (BOGSX) is 6.72%, while Nomura Science and Technology Fund Class A (WSTAX) has a volatility of 7.21%. This indicates that BOGSX experiences smaller price fluctuations and is considered to be less risky than WSTAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BOGSX	WSTAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.72%	7.21%	-0.49%
Volatility (6M) Calculated over the trailing 6-month period	16.72%	18.76%	-2.04%
Volatility (1Y) Calculated over the trailing 1-year period	21.46%	23.78%	-2.32%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	25.21%	36.95%	-11.74%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	24.60%	30.71%	-6.11%

BOGSX vs. WSTAX - Expense Ratio Comparison

BOGSX has a 1.03% expense ratio, which is lower than WSTAX's 1.17% expense ratio.

Dividends

BOGSX vs. WSTAX - Dividend Comparison

BOGSX's dividend yield for the trailing twelve months is around 4.02%, less than WSTAX's 12.93% 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%
WSTAX Nomura Science and Technology Fund Class A	12.93%	18.32%	36.08%	11.62%	33.72%	42.99%	8.89%	11.48%	13.99%	6.95%	0.00%	2.50%

Frequently Asked Questions

Can I hold both BOGSX and WSTAX in my portfolio?

BOGSX and WSTAX have a correlation of 0.86, 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 WSTAX?

WSTAX has higher volatility (7.21%) compared to BOGSX (6.72%). In terms of maximum drawdown, BOGSX dropped -92.80% vs WSTAX's -55.39%.

Which has better risk-adjusted returns?

WSTAX currently has the higher Sharpe Ratio (3.25 vs 2.93), 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.