WSTAX vs. CCOYX

Last updated Jun 4, 2026

WSTAX (Nomura Science and Technology Fund Class A) and CCOYX (Columbia Seligman Technology and Information Fund Institutional 3 Class) are both Technology Equities funds. Over the past 5 years, WSTAX returned 25.51%/yr vs 27.23%/yr for CCOYX. Their correlation of 0.93 suggests significant overlap in exposure. WSTAX charges 1.17%/yr vs 0.82%/yr for CCOYX.

Performance

WSTAX vs. CCOYX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Nomura Science and Technology Fund Class A (WSTAX) and Columbia Seligman Technology and Information Fund Institutional 3 Class (CCOYX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, WSTAX achieves a 41.80% return, which is significantly lower than CCOYX's 58.87% return.

WSTAX

• 1D: 1.03%
• 1M: 15.75%
• YTD: 41.80%
• 6M: 42.57%
• 1Y: 76.95%
• 3Y*: 52.21%
• 5Y*: 25.51%
• 10Y*: 24.74%

CCOYX

• 1D: 3.67%
• 1M: 15.59%
• YTD: 58.87%
• 6M: 55.61%
• 1Y: 127.06%
• 3Y*: 48.12%
• 5Y*: 27.23%
• 10Y*: —

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

WSTAX vs. CCOYX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
WSTAX Nomura Science and Technology Fund Class A	41.80%	33.91%	59.64%	40.44%	-32.50%	14.19%	36.12%	50.35%	-5.23%	22.04%
CCOYX Columbia Seligman Technology and Information Fund Institutional 3 Class	58.87%	37.79%	27.11%	44.77%	-30.92%	39.45%	44.92%	54.68%	-7.78%	19.33%

Correlation

The correlation between WSTAX and CCOYX is 0.91, 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	0.91
Correlation (3Y) Calculated over the trailing 3-year period	0.92
Correlation (5Y) Calculated over the trailing 5-year period	0.93
Correlation (All Time) Calculated using the full available price history since Mar 2, 2017	0.93

The correlation between WSTAX and CCOYX has been stable across timeframes, ranging from 0.91 to 0.93 - a consistent structural relationship.

Return for Risk

WSTAX vs. CCOYX — Risk / Return Rank

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

WSTAX

WSTAX Risk / Return Rank: 87
WSTAX Sharpe Ratio Rank: 95
WSTAX Sortino Ratio Rank: 82
WSTAX Omega Ratio Rank: 81
WSTAX Calmar Ratio Rank: 91
WSTAX Martin Ratio Rank: 88

CCOYX

CCOYX Risk / Return Rank: 97
CCOYX Sharpe Ratio Rank: 99
CCOYX Sortino Ratio Rank: 96
CCOYX Omega Ratio Rank: 93
CCOYX Calmar Ratio Rank: 99
CCOYX Martin Ratio Rank: 99

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.

WSTAX vs. CCOYX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Nomura Science and Technology Fund Class A (WSTAX) and Columbia Seligman Technology and Information Fund Institutional 3 Class (CCOYX). 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.

	WSTAX	CCOYX	Difference
Sharpe ratio: Return per unit of total volatility	3.34	5.06	-1.72
Sortino ratio: Return per unit of downside risk	3.88	5.25	-1.37
Omega ratio: Gain probability vs. loss probability	1.53	1.71	-0.18
Calmar ratio: Return relative to maximum drawdown	4.75	10.72	-5.97
Martin ratio: Return relative to average drawdown	17.39	41.63	-24.24
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

WSTAX vs. CCOYX - Sharpe Ratio Comparison

The current WSTAX Sharpe Ratio is 3.34, which is lower than the CCOYX Sharpe Ratio of 5.06. The chart below compares the historical Sharpe Ratios of WSTAX and CCOYX, 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

	WSTAX	CCOYX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.34	5.06	-1.72
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.69	1.04	-0.35
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.81	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.53	1.04	-0.51

Drawdowns

WSTAX vs. CCOYX - Drawdown Comparison

The maximum WSTAX drawdown since its inception was -55.39%, which is greater than CCOYX's maximum drawdown of -37.16%. Use the drawdown chart below to compare losses from any high point for WSTAX and CCOYX.

Drawdown Indicators

	WSTAX	CCOYX	Difference
Max Drawdown Largest peak-to-trough decline	-55.39%	-37.16%	-18.23%
Max Drawdown (1Y) Largest decline over 1 year	-16.73%	-12.31%	-4.42%
Max Drawdown (3Y) Largest decline over 3 years	-27.35%	-29.08%	+1.73%
Max Drawdown (5Y) Largest decline over 5 years	-55.39%	-37.16%	-18.23%
Max Drawdown (10Y) Largest decline over 10 years	-55.39%	—	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-14.95%	-7.69%	-7.26%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.56%	3.17%	+1.39%

Volatility

WSTAX vs. CCOYX - Volatility Comparison

Nomura Science and Technology Fund Class A (WSTAX) and Columbia Seligman Technology and Information Fund Institutional 3 Class (CCOYX) have volatilities of 7.17% and 7.25%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	WSTAX	CCOYX	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.17%	7.25%	-0.08%
Volatility (6M) Calculated over the trailing 6-month period	18.78%	20.07%	-1.29%
Volatility (1Y) Calculated over the trailing 1-year period	23.79%	26.09%	-2.30%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	36.95%	26.21%	+10.74%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	30.71%	26.76%	+3.95%

WSTAX vs. CCOYX - Expense Ratio Comparison

WSTAX has a 1.17% expense ratio, which is higher than CCOYX's 0.82% expense ratio.

Dividends

WSTAX vs. CCOYX - Dividend Comparison

WSTAX's dividend yield for the trailing twelve months is around 12.92%, more than CCOYX's 5.09% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CCOYX Columbia Seligman Technology and Information Fund Institutional 3 Class	5.09%	8.08%	12.32%	4.60%	8.17%	10.62%	9.52%	10.61%	11.42%	10.60%	0.00%	0.00%
WSTAX Nomura Science and Technology Fund Class A	12.92%	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 WSTAX and CCOYX in my portfolio?

With a correlation of 0.91, WSTAX and CCOYX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, WSTAX or CCOYX?

CCOYX has higher volatility (7.25%) compared to WSTAX (7.17%). In terms of maximum drawdown, WSTAX dropped -55.39% vs CCOYX's -37.16%.

Which has better risk-adjusted returns?

CCOYX currently has the higher Sharpe Ratio (5.06 vs 3.34), 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.