FIUSX vs. NAMAX

Last updated Jun 4, 2026

FIUSX (Delaware Opportunity Fund) and NAMAX (Columbia Select Mid Cap Value Fund) are both Mid Cap Value Equities funds. Over the past 10 years, FIUSX returned 11.06%/yr vs 11.09%/yr for NAMAX. With a 0.95 correlation, they move nearly in lockstep. FIUSX charges 1.15%/yr vs 0.88%/yr for NAMAX.

Performance

FIUSX vs. NAMAX - Performance Comparison

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

Returns By Period

The year-to-date returns for both investments are quite close, with FIUSX having a 18.81% return and NAMAX slightly higher at 18.89%. Both investments have delivered pretty close results over the past 10 years, with FIUSX having a 11.06% annualized return and NAMAX not far ahead at 11.09%.

FIUSX

• 1D: 1.57%
• 1M: 2.54%
• YTD: 18.81%
• 6M: 18.48%
• 1Y: 34.10%
• 3Y*: 20.06%
• 5Y*: 10.71%
• 10Y*: 11.06%

NAMAX

• 1D: 2.06%
• 1M: 3.33%
• YTD: 18.89%
• 6M: 19.09%
• 1Y: 35.28%
• 3Y*: 18.96%
• 5Y*: 10.64%
• 10Y*: 11.09%

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

FIUSX vs. NAMAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FIUSX Delaware Opportunity Fund	18.81%	12.60%	14.07%	11.68%	-9.62%	30.95%	0.88%	29.58%	-15.71%	18.67%
NAMAX Columbia Select Mid Cap Value Fund	18.89%	13.77%	13.14%	9.65%	-9.33%	32.28%	6.90%	31.56%	-18.46%	13.71%

Correlation

The correlation between FIUSX and NAMAX is 0.94, 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	0.94
Correlation (3Y) Calculated over the trailing 3-year period	0.96
Correlation (5Y) Calculated over the trailing 5-year period	0.97
Correlation (10Y) Calculated over the trailing 10-year period	0.95
Correlation (All Time) Calculated using the full available price history since Nov 21, 2001	0.95

The correlation between FIUSX and NAMAX has been stable across timeframes, ranging from 0.94 to 0.97 - a consistent structural relationship.

Return for Risk

FIUSX vs. NAMAX — Risk / Return Rank

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

FIUSX

FIUSX Risk / Return Rank: 82
FIUSX Sharpe Ratio Rank: 80
FIUSX Sortino Ratio Rank: 78
FIUSX Omega Ratio Rank: 68
FIUSX Calmar Ratio Rank: 93
FIUSX Martin Ratio Rank: 93

NAMAX

NAMAX Risk / Return Rank: 80
NAMAX Sharpe Ratio Rank: 81
NAMAX Sortino Ratio Rank: 77
NAMAX Omega Ratio Rank: 67
NAMAX Calmar Ratio Rank: 87
NAMAX Martin Ratio Rank: 87

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.

FIUSX vs. NAMAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Delaware Opportunity Fund (FIUSX) and Columbia Select Mid Cap Value Fund (NAMAX). 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.

	FIUSX	NAMAX	Difference
Sharpe ratio: Return per unit of total volatility	2.60	2.61	-0.02
Sortino ratio: Return per unit of downside risk	3.72	3.66	+0.06
Omega ratio: Gain probability vs. loss probability	1.46	1.45	+0.01
Calmar ratio: Return relative to maximum drawdown	5.32	4.30	+1.01
Martin ratio: Return relative to average drawdown	19.83	16.82	+3.01
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FIUSX vs. NAMAX - Sharpe Ratio Comparison

The current FIUSX Sharpe Ratio is 2.60, which is comparable to the NAMAX Sharpe Ratio of 2.61. The chart below compares the historical Sharpe Ratios of FIUSX and NAMAX, 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

	FIUSX	NAMAX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.60	2.61	-0.02
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.59	0.59	0.00
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.54	0.55	-0.02
Sharpe Ratio (All Time) Calculated using the full available price history	0.45	0.48	-0.03

Drawdowns

FIUSX vs. NAMAX - Drawdown Comparison

The maximum FIUSX drawdown since its inception was -56.30%, smaller than the maximum NAMAX drawdown of -60.44%. Use the drawdown chart below to compare losses from any high point for FIUSX and NAMAX.

Drawdown Indicators

	FIUSX	NAMAX	Difference
Max Drawdown Largest peak-to-trough decline	-56.30%	-60.44%	+4.14%
Max Drawdown (1Y) Largest decline over 1 year	-6.75%	-8.49%	+1.74%
Max Drawdown (3Y) Largest decline over 3 years	-21.69%	-20.90%	-0.79%
Max Drawdown (5Y) Largest decline over 5 years	-21.69%	-20.90%	-0.79%
Max Drawdown (10Y) Largest decline over 10 years	-46.38%	-43.24%	-3.14%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-9.46%	-8.51%	-0.95%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.80%	2.17%	-0.37%

Volatility

FIUSX vs. NAMAX - Volatility Comparison

Delaware Opportunity Fund (FIUSX) and Columbia Select Mid Cap Value Fund (NAMAX) have volatilities of 4.26% and 4.10%, 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

	FIUSX	NAMAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.26%	4.10%	+0.16%
Volatility (6M) Calculated over the trailing 6-month period	10.46%	10.55%	-0.09%
Volatility (1Y) Calculated over the trailing 1-year period	13.81%	13.98%	-0.17%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.17%	18.13%	+0.04%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.58%	20.06%	+0.52%

FIUSX vs. NAMAX - Expense Ratio Comparison

FIUSX has a 1.15% expense ratio, which is higher than NAMAX's 0.88% expense ratio.

Dividends

FIUSX vs. NAMAX - Dividend Comparison

FIUSX's dividend yield for the trailing twelve months is around 9.71%, more than NAMAX's 5.62% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FIUSX Delaware Opportunity Fund	9.71%	11.53%	12.68%	2.85%	8.96%	5.62%	1.60%	40.65%	12.11%	6.00%	4.23%	1.14%
NAMAX Columbia Select Mid Cap Value Fund	5.62%	6.71%	7.07%	0.74%	6.39%	8.99%	3.22%	3.38%	27.38%	21.08%	8.07%	17.05%

Frequently Asked Questions

Can I hold both FIUSX and NAMAX in my portfolio?

With a correlation of 0.94, FIUSX and NAMAX 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, FIUSX or NAMAX?

FIUSX has higher volatility (4.26%) compared to NAMAX (4.10%). In terms of maximum drawdown, FIUSX dropped -56.30% vs NAMAX's -60.44%.

Which has better risk-adjusted returns?

NAMAX currently has the higher Sharpe Ratio (2.61 vs 2.60), 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.