FNCMX vs. MGLBX

Last updated Jun 5, 2026

FNCMX (Fidelity NASDAQ Composite Index Fund) and MGLBX (Marsico Global Fund) are both mutual funds - FNCMX is a Large Cap Growth Equities fund tracking the Nasdaq Composite Index, while MGLBX is a Global Equities fund managed by Marsico Investment Fund. Over the past 10 years, FNCMX returned 19.34%/yr vs 19.64%/yr for MGLBX. Their correlation of 0.89 suggests significant overlap in exposure. FNCMX charges 0.29%/yr vs 1.45%/yr for MGLBX.

Performance

FNCMX vs. MGLBX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity NASDAQ Composite Index Fund (FNCMX) and Marsico Global Fund (MGLBX). 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 FNCMX having a 15.79% return and MGLBX slightly higher at 15.82%. Both investments have delivered pretty close results over the past 10 years, with FNCMX having a 19.34% annualized return and MGLBX not far ahead at 19.64%.

FNCMX

• 1D: -0.88%
• 1M: 6.11%
• YTD: 15.79%
• 6M: 14.55%
• 1Y: 38.83%
• 3Y*: 27.53%
• 5Y*: 15.16%
• 10Y*: 19.34%

MGLBX

• 1D: -1.15%
• 1M: 6.58%
• YTD: 15.82%
• 6M: 17.39%
• 1Y: 27.48%
• 3Y*: 32.02%
• 5Y*: 13.82%
• 10Y*: 19.64%

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

FNCMX vs. MGLBX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FNCMX Fidelity NASDAQ Composite Index Fund	15.79%	21.11%	29.48%	45.13%	-32.40%	22.21%	44.57%	36.63%	-3.07%	28.35%
MGLBX Marsico Global Fund	15.82%	27.15%	40.57%	35.38%	-34.54%	10.96%	81.92%	27.18%	-4.50%	40.25%

Correlation

The correlation between FNCMX and MGLBX is 0.85, 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	0.85
Correlation (3Y) Calculated over the trailing 3-year period	0.88
Correlation (5Y) Calculated over the trailing 5-year period	0.91
Correlation (10Y) Calculated over the trailing 10-year period	0.90
Correlation (All Time) Calculated using the full available price history since Jul 2, 2007	0.89

The correlation between FNCMX and MGLBX has been stable across timeframes, ranging from 0.85 to 0.91 - a consistent structural relationship.

Return for Risk

FNCMX vs. MGLBX — Risk / Return Rank

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

FNCMX

FNCMX Risk / Return Rank: 61
FNCMX Sharpe Ratio Rank: 68
FNCMX Sortino Ratio Rank: 57
FNCMX Omega Ratio Rank: 56
FNCMX Calmar Ratio Rank: 62
FNCMX Martin Ratio Rank: 60

MGLBX

MGLBX Risk / Return Rank: 29
MGLBX Sharpe Ratio Rank: 27
MGLBX Sortino Ratio Rank: 27
MGLBX Omega Ratio Rank: 26
MGLBX Calmar Ratio Rank: 28
MGLBX Martin Ratio Rank: 37

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.

FNCMX vs. MGLBX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity NASDAQ Composite Index Fund (FNCMX) and Marsico Global Fund (MGLBX). 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.

	FNCMX	MGLBX	Difference
Sharpe ratio: Return per unit of total volatility	2.43	1.48	+0.95
Sortino ratio: Return per unit of downside risk	3.19	2.15	+1.03
Omega ratio: Gain probability vs. loss probability	1.42	1.27	+0.15
Calmar ratio: Return relative to maximum drawdown	3.03	1.94	+1.10
Martin ratio: Return relative to average drawdown	11.93	8.06	+3.87
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FNCMX vs. MGLBX - Sharpe Ratio Comparison

The current FNCMX Sharpe Ratio is 2.43, which is higher than the MGLBX Sharpe Ratio of 1.48. The chart below compares the historical Sharpe Ratios of FNCMX and MGLBX, 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

	FNCMX	MGLBX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.43	1.48	+0.95
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.68	0.63	+0.05
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.88	0.85	+0.03
Sharpe Ratio (All Time) Calculated using the full available price history	0.58	0.57	+0.01

Drawdowns

FNCMX vs. MGLBX - Drawdown Comparison

The maximum FNCMX drawdown since its inception was -55.08%, smaller than the maximum MGLBX drawdown of -59.60%. Use the drawdown chart below to compare losses from any high point for FNCMX and MGLBX.

Drawdown Indicators

	FNCMX	MGLBX	Difference
Max Drawdown Largest peak-to-trough decline	-55.08%	-59.60%	+4.52%
Max Drawdown (1Y) Largest decline over 1 year	-13.01%	-14.92%	+1.91%
Max Drawdown (3Y) Largest decline over 3 years	-24.20%	-20.66%	-3.54%
Max Drawdown (5Y) Largest decline over 5 years	-35.64%	-43.08%	+7.44%
Max Drawdown (10Y) Largest decline over 10 years	-35.64%	-43.08%	+7.44%
Current Drawdown Current decline from peak	-0.88%	-1.15%	+0.27%
Average Drawdown Average peak-to-trough decline	-7.86%	-11.56%	+3.70%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.30%	3.58%	-0.28%

Volatility

FNCMX vs. MGLBX - Volatility Comparison

The current volatility for Fidelity NASDAQ Composite Index Fund (FNCMX) is 4.27%, while Marsico Global Fund (MGLBX) has a volatility of 6.76%. This indicates that FNCMX experiences smaller price fluctuations and is considered to be less risky than MGLBX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FNCMX	MGLBX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.27%	6.76%	-2.49%
Volatility (6M) Calculated over the trailing 6-month period	12.14%	16.14%	-4.00%
Volatility (1Y) Calculated over the trailing 1-year period	16.25%	19.56%	-3.31%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.46%	21.97%	+0.49%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.05%	23.06%	-1.01%

FNCMX vs. MGLBX - Expense Ratio Comparison

FNCMX has a 0.29% expense ratio, which is lower than MGLBX's 1.45% expense ratio.

Dividends

FNCMX vs. MGLBX - Dividend Comparison

FNCMX's dividend yield for the trailing twelve months is around 0.44%, less than MGLBX's 10.47% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FNCMX Fidelity NASDAQ Composite Index Fund	0.44%	0.51%	0.61%	0.67%	0.88%	0.47%	0.67%	4.41%	1.93%	0.03%	1.01%	1.50%
MGLBX Marsico Global Fund	10.47%	12.13%	3.42%	1.98%	4.37%	17.97%	24.53%	0.00%	1.16%	9.25%	0.00%	11.04%

Frequently Asked Questions

Can I hold both FNCMX and MGLBX in my portfolio?

FNCMX and MGLBX have a correlation of 0.85, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FNCMX or MGLBX?

MGLBX has higher volatility (6.76%) compared to FNCMX (4.27%). In terms of maximum drawdown, FNCMX dropped -55.08% vs MGLBX's -59.60%.

Which has better risk-adjusted returns?

FNCMX currently has the higher Sharpe Ratio (2.43 vs 1.48), 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.