NAMAX vs. STK

Last updated Aug 4, 2026

NAMAX (Columbia Select Mid Cap Value Fund) and STK (Columbia Seligman Premium Technology Growth Fund) are both mutual funds - NAMAX is a Mid Cap Value Equities fund managed by Columbia, while STK is a Technology Equities fund actively managed by Columbia. Over the past 10 years, NAMAX returned 11.52%/yr vs 22.11%/yr for STK. Their 0.58 correlation means they have sometimes moved together and sometimes differently. NAMAX charges 0.88%/yr vs 1.12%/yr for STK.

Performance

NAMAX vs. STK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Columbia Select Mid Cap Value Fund (NAMAX) and Columbia Seligman Premium Technology Growth Fund (STK). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, NAMAX achieves a 25.23% return, which is significantly lower than STK's 37.62% return. Over the past 10 years, NAMAX has underperformed STK with an annualized return of 11.52%, while STK has yielded a comparatively higher 22.11% annualized return.

NAMAX

• 1D: -0.22%
• 1M: 1.24%
• 6M: 18.51%
• YTD: 25.23%
• 1Y: 37.43%
• 3Y*: 18.16%
• 5Y*: 12.32%
• 10Y*: 11.52%
• ALL TIME*: 10.09%

STK

• 1D: 1.00%
• 1M: -3.86%
• 6M: 24.49%
• YTD: 37.62%
• 1Y: 74.26%
• 3Y*: 30.64%
• 5Y*: 19.12%
• 10Y*: 22.11%
• ALL TIME*: 16.75%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
NAMAX Columbia Select Mid Cap Value Fund	$0.00	$0.00	$0.00
STK Columbia Seligman Premium Technology Growth Fund	$3.39M	$2.89M	$3.63M

NAMAX vs. STK - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
NAMAX Columbia Select Mid Cap Value Fund	25.23%	13.77%	13.14%	9.65%	-9.33%	32.28%	6.90%	31.56%	-18.46%	13.71%
STK Columbia Seligman Premium Technology Growth Fund	37.62%	24.85%	17.74%	46.60%	-30.36%	48.63%	25.39%	52.73%	-14.91%	33.52%

Correlation

The correlation between NAMAX and STK is 0.47, which is low. Their historical price movements had little consistent relationship.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.47
Correlation (3Y) Balances recent behavior with more history.	0.52
Correlation (5Y) Shows whether the relationship held over a longer period.	0.63
Correlation (10Y) Provides a long-term view across more market conditions.	0.59
Correlation (All Time) Calculated using the full available price history since Nov 27, 2009	0.58

The correlation between NAMAX and STK shifts across timeframes, from 0.47 (1 year) to 0.63 (5 years), reflecting how their relationship changes across market environments.

Return for Risk

NAMAX vs. STK — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

NAMAX

NAMAX Risk / Return Rank: 92
NAMAX Sharpe Ratio Rank: 94
NAMAX Sortino Ratio Rank: 92
NAMAX Omega Ratio Rank: 86
NAMAX Calmar Ratio Rank: 94
NAMAX Martin Ratio Rank: 95

STK

STK Risk / Return Rank: 89
STK Sharpe Ratio Rank: 95
STK Sortino Ratio Rank: 85
STK Omega Ratio Rank: 84
STK Calmar Ratio Rank: 91
STK Martin Ratio Rank: 90

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

NAMAX vs. STK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Columbia Select Mid Cap Value Fund (NAMAX) and Columbia Seligman Premium Technology Growth Fund (STK). 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.

	NAMAX	STK	Difference
Sharpe ratio: Return per unit of total volatility	2.51	2.57	-0.06
Sortino ratio: Return per unit of downside risk	3.55	3.07	+0.48
Omega ratio: Gain probability vs. loss probability	1.44	1.41	+0.03
Calmar ratio: Return relative to maximum drawdown	4.19	3.57	+0.62
Martin ratio: Return relative to average drawdown	16.66	12.93	+3.73

NAMAX vs. STK - Sharpe Ratio Comparison

The current NAMAX Sharpe Ratio is 2.51, which is comparable to the STK Sharpe Ratio of 2.57. The chart below compares the historical Sharpe Ratios of NAMAX and STK, 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

NAMAX vs. STK - Drawdown Comparison

The maximum NAMAX drawdown since its inception was -60.44%, which is greater than STK's maximum drawdown of -41.74%. Use the drawdown chart below to compare losses from any high point for NAMAX and STK.

Drawdown Indicators

	NAMAX	STK	Difference
Max Drawdown Largest peak-to-trough decline	-60.44%	-41.74%	-18.70%
Max Drawdown (1Y) Largest decline over 1 year	-8.49%	-20.93%	+12.44%
Max Drawdown (3Y) Largest decline over 3 years	-20.90%	-26.59%	+5.69%
Max Drawdown (5Y) Largest decline over 5 years	-20.90%	-36.27%	+15.37%
Max Drawdown (10Y) Largest decline over 10 years	-43.24%	-41.74%	-1.50%
Current Drawdown Current decline from peak	-1.43%	-14.04%	+12.61%
Average Drawdown Average peak-to-trough decline	-8.45%	-7.44%	-1.01%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.13%	5.76%	-3.63%

Volatility

NAMAX vs. STK - Volatility Comparison

The current volatility for Columbia Select Mid Cap Value Fund (NAMAX) is 2.89%, while Columbia Seligman Premium Technology Growth Fund (STK) has a volatility of 10.63%. This indicates that NAMAX experiences smaller price fluctuations and is considered to be less risky than STK based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	NAMAX	STK	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.89%	10.63%	-7.74%
Volatility (6M) Calculated over the trailing 6-month period	10.76%	25.35%	-14.59%
Volatility (1Y) Calculated over the trailing 1-year period	14.16%	29.07%	-14.91%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.96%	26.23%	-8.27%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.00%	26.66%	-6.66%

NAMAX vs. STK - Expense Ratio Comparison

NAMAX has a 0.88% expense ratio, which is lower than STK's 1.12% expense ratio.

Dividends

NAMAX vs. STK - Dividend Comparison

NAMAX's dividend yield for the trailing twelve months is around 5.95%, more than STK's 5.48% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
NAMAX Columbia Select Mid Cap Value Fund	5.95%	6.71%	7.07%	0.74%	6.39%	8.99%	3.22%	3.38%	27.38%	21.08%	8.07%	17.05%
STK Columbia Seligman Premium Technology Growth Fund	5.48%	7.38%	16.02%	6.70%	12.62%	8.48%	6.79%	7.86%	14.88%	11.82%	9.87%	10.32%

Frequently Asked Questions

Can I hold both NAMAX and STK in my portfolio?

NAMAX and STK have a correlation of 0.47, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, NAMAX or STK?

STK has higher volatility (10.63%) compared to NAMAX (2.89%). In terms of maximum drawdown, NAMAX dropped -60.44% vs STK's -41.74%.

Which has better risk-adjusted returns?

STK currently has the higher Sharpe Ratio (2.57 vs 2.51), 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.