NMPAX vs. LLSCX

Last updated Jul 15, 2026

NMPAX (Columbia Mid Cap Index Fund) and LLSCX (Longleaf Partners Small-Cap Fund) are both Mid Cap Blend Equities funds. Over the past 10 years, NMPAX returned 10.33%/yr vs 5.60%/yr for LLSCX. Their correlation of 0.83 suggests significant overlap in exposure. NMPAX charges 0.20%/yr vs 0.95%/yr for LLSCX.

Performance

NMPAX vs. LLSCX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Columbia Mid Cap Index Fund (NMPAX) and Longleaf Partners Small-Cap Fund (LLSCX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, NMPAX achieves a 14.46% return, which is significantly higher than LLSCX's -5.43% return. Over the past 10 years, NMPAX has outperformed LLSCX with an annualized return of 10.33%, while LLSCX has yielded a comparatively lower 5.60% annualized return.

NMPAX

• 1D: -0.58%
• 1M: -0.84%
• 6M: 8.93%
• YTD: 14.46%
• 1Y: 19.57%
• 3Y*: 13.51%
• 5Y*: 8.68%
• 10Y*: 10.33%

LLSCX

• 1D: 0.44%
• 1M: -1.79%
• 6M: -8.21%
• YTD: -5.43%
• 1Y: -6.14%
• 3Y*: 6.22%
• 5Y*: 1.46%
• 10Y*: 5.60%

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

NMPAX vs. LLSCX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
NMPAX Columbia Mid Cap Index Fund	14.46%	7.23%	13.67%	16.32%	-13.27%	24.66%	8.71%	25.99%	-11.44%	15.84%
LLSCX Longleaf Partners Small-Cap Fund	-5.43%	7.56%	9.69%	20.17%	-19.25%	11.18%	4.17%	27.74%	-6.52%	9.07%

Correlation

The correlation between NMPAX and LLSCX is 0.61, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.61
Correlation (3Y) Calculated over the trailing 3-year period	0.76
Correlation (5Y) Calculated over the trailing 5-year period	0.83
Correlation (10Y) Calculated over the trailing 10-year period	0.82
Correlation (All Time) Calculated using the full available price history since Mar 31, 2000	0.83

Over the past year, the correlation between NMPAX and LLSCX has dropped to 0.61 - well below their long-term average of 0.83, suggesting their price drivers have been diverging.

Return for Risk

NMPAX vs. LLSCX — Risk / Return Rank

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

NMPAX

NMPAX Risk / Return Rank: 42
NMPAX Sharpe Ratio Rank: 34
NMPAX Sortino Ratio Rank: 36
NMPAX Omega Ratio Rank: 33
NMPAX Calmar Ratio Rank: 56
NMPAX Martin Ratio Rank: 51

LLSCX

LLSCX Risk / Return Rank: 1
LLSCX Sharpe Ratio Rank: 2
LLSCX Sortino Ratio Rank: 1
LLSCX Omega Ratio Rank: 2
LLSCX Calmar Ratio Rank: 1
LLSCX Martin Ratio Rank: 1

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.

NMPAX vs. LLSCX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Columbia Mid Cap Index Fund (NMPAX) and Longleaf Partners Small-Cap Fund (LLSCX). 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.

	NMPAX	LLSCX	Difference
Sharpe ratio: Return per unit of total volatility	1.27	-0.40	+1.67
Sortino ratio: Return per unit of downside risk	1.91	-0.48	+2.38
Omega ratio: Gain probability vs. loss probability	1.23	0.95	+0.28
Calmar ratio: Return relative to maximum drawdown	2.27	-0.46	+2.73
Martin ratio: Return relative to average drawdown	8.23	-0.95	+9.18

NMPAX vs. LLSCX - Sharpe Ratio Comparison

The current NMPAX Sharpe Ratio is 1.27, which is higher than the LLSCX Sharpe Ratio of -0.40. The chart below compares the historical Sharpe Ratios of NMPAX and LLSCX, 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

NMPAX vs. LLSCX - Drawdown Comparison

The maximum NMPAX drawdown since its inception was -54.31%, smaller than the maximum LLSCX drawdown of -63.97%. Use the drawdown chart below to compare losses from any high point for NMPAX and LLSCX.

Drawdown Indicators

	NMPAX	LLSCX	Difference
Max Drawdown Largest peak-to-trough decline	-54.31%	-63.97%	+9.66%
Max Drawdown (1Y) Largest decline over 1 year	-8.84%	-11.44%	+2.60%
Max Drawdown (3Y) Largest decline over 3 years	-24.03%	-15.40%	-8.63%
Max Drawdown (5Y) Largest decline over 5 years	-24.03%	-26.67%	+2.64%
Max Drawdown (10Y) Largest decline over 10 years	-42.09%	-42.23%	+0.14%
Current Drawdown Current decline from peak	-2.39%	-9.60%	+7.21%
Average Drawdown Average peak-to-trough decline	-7.70%	-8.90%	+1.20%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.43%	5.49%	-3.06%

Volatility

NMPAX vs. LLSCX - Volatility Comparison

The current volatility for Columbia Mid Cap Index Fund (NMPAX) is 4.34%, while Longleaf Partners Small-Cap Fund (LLSCX) has a volatility of 4.81%. This indicates that NMPAX experiences smaller price fluctuations and is considered to be less risky than LLSCX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	NMPAX	LLSCX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.34%	4.81%	-0.47%
Volatility (6M) Calculated over the trailing 6-month period	11.71%	9.41%	+2.30%
Volatility (1Y) Calculated over the trailing 1-year period	15.84%	13.10%	+2.74%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.70%	16.98%	+2.72%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.07%	24.55%	-3.48%

NMPAX vs. LLSCX - Expense Ratio Comparison

NMPAX has a 0.20% expense ratio, which is lower than LLSCX's 0.95% expense ratio.

Dividends

NMPAX vs. LLSCX - Dividend Comparison

NMPAX's dividend yield for the trailing twelve months is around 10.45%, more than LLSCX's 1.24% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
LLSCX Longleaf Partners Small-Cap Fund	1.24%	1.17%	0.11%	0.94%	1.20%	0.82%	5.85%	14.89%	18.13%	8.43%	18.01%	5.91%
NMPAX Columbia Mid Cap Index Fund	10.45%	9.34%	11.35%	7.97%	11.65%	18.03%	5.96%	5.70%	10.06%	7.66%	7.97%	10.12%

Frequently Asked Questions

Can I hold both NMPAX and LLSCX in my portfolio?

NMPAX and LLSCX have a correlation of 0.61, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, NMPAX or LLSCX?

LLSCX has higher volatility (4.81%) compared to NMPAX (4.34%). In terms of maximum drawdown, NMPAX dropped -54.31% vs LLSCX's -63.97%.

Which has better risk-adjusted returns?

NMPAX currently has the higher Sharpe Ratio (1.27 vs -0.40), 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.