MGRIX vs. MIOFX

Last updated Jun 24, 2026

MGRIX (Marsico Growth Fund) and MIOFX (Marsico International Opportunities Fund) are both mutual funds - MGRIX is a Large Cap Growth Equities fund managed by Marsico Investment Fund, while MIOFX is a Foreign Large Cap Equities fund managed by Marsico Investment Fund. Over the past 10 years, MGRIX returned 17.64%/yr vs 13.22%/yr for MIOFX. A 0.72 correlation means they provide meaningful diversification when combined. MGRIX charges 1.34%/yr vs 1.50%/yr for MIOFX.

Performance

MGRIX vs. MIOFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Marsico Growth Fund (MGRIX) and Marsico International Opportunities Fund (MIOFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MGRIX achieves a 3.36% return, which is significantly lower than MIOFX's 15.38% return. Over the past 10 years, MGRIX has outperformed MIOFX with an annualized return of 17.64%, while MIOFX has yielded a comparatively lower 13.22% annualized return.

MGRIX

• 1D: -1.18%
• 1M: -1.75%
• YTD: 3.36%
• 6M: 1.89%
• 1Y: 13.32%
• 3Y*: 25.78%
• 5Y*: 11.03%
• 10Y*: 17.64%

MIOFX

• 1D: -0.55%
• 1M: 6.86%
• YTD: 15.38%
• 6M: 14.15%
• 1Y: 25.03%
• 3Y*: 28.88%
• 5Y*: 12.06%
• 10Y*: 13.22%

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

MGRIX vs. MIOFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MGRIX Marsico Growth Fund	3.36%	12.73%	49.06%	47.46%	-36.44%	15.62%	52.96%	33.17%	-1.14%	31.22%
MIOFX Marsico International Opportunities Fund	15.38%	28.54%	36.31%	17.96%	-23.71%	4.93%	20.59%	31.39%	-18.18%	44.09%

Correlation

The correlation between MGRIX and MIOFX 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	0.85
Correlation (5Y) Calculated over the trailing 5-year period	0.82
Correlation (10Y) Calculated over the trailing 10-year period	0.76
Correlation (All Time) Calculated using the full available price history since Jun 30, 2000	0.72

The correlation between MGRIX and MIOFX shifts across timeframes, from 0.72 (all time) to 0.85 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

MGRIX vs. MIOFX — Risk / Return Rank

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

MGRIX

MGRIX Risk / Return Rank: 13
MGRIX Sharpe Ratio Rank: 12
MGRIX Sortino Ratio Rank: 12
MGRIX Omega Ratio Rank: 12
MGRIX Calmar Ratio Rank: 12
MGRIX Martin Ratio Rank: 15

MIOFX

MIOFX Risk / Return Rank: 24
MIOFX Sharpe Ratio Rank: 23
MIOFX Sortino Ratio Rank: 24
MIOFX Omega Ratio Rank: 24
MIOFX Calmar Ratio Rank: 25
MIOFX Martin Ratio Rank: 25

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.

MGRIX vs. MIOFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Marsico Growth Fund (MGRIX) and Marsico International Opportunities Fund (MIOFX). 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.

	MGRIX	MIOFX	Difference
Sharpe ratio: Return per unit of total volatility	0.89	1.25	-0.36
Sortino ratio: Return per unit of downside risk	1.34	1.88	-0.55
Omega ratio: Gain probability vs. loss probability	1.16	1.23	-0.07
Calmar ratio: Return relative to maximum drawdown	1.09	1.71	-0.62
Martin ratio: Return relative to average drawdown	3.90	5.52	-1.62

MGRIX vs. MIOFX - Sharpe Ratio Comparison

The current MGRIX Sharpe Ratio is 0.89, which is comparable to the MIOFX Sharpe Ratio of 1.25. The chart below compares the historical Sharpe Ratios of MGRIX and MIOFX, 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

MGRIX vs. MIOFX - Drawdown Comparison

The maximum MGRIX drawdown since its inception was -56.50%, smaller than the maximum MIOFX drawdown of -63.83%. Use the drawdown chart below to compare losses from any high point for MGRIX and MIOFX.

Drawdown Indicators

	MGRIX	MIOFX	Difference
Max Drawdown Largest peak-to-trough decline	-56.50%	-63.83%	+7.33%
Max Drawdown (1Y) Largest decline over 1 year	-13.55%	-15.37%	+1.82%
Max Drawdown (3Y) Largest decline over 3 years	-24.86%	-17.52%	-7.34%
Max Drawdown (5Y) Largest decline over 5 years	-41.50%	-38.75%	-2.75%
Max Drawdown (10Y) Largest decline over 10 years	-41.50%	-38.75%	-2.75%
Current Drawdown Current decline from peak	-3.72%	-0.55%	-3.17%
Average Drawdown Average peak-to-trough decline	-14.80%	-17.10%	+2.30%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.79%	4.76%	-0.97%

Volatility

MGRIX vs. MIOFX - Volatility Comparison

The current volatility for Marsico Growth Fund (MGRIX) is 6.41%, while Marsico International Opportunities Fund (MIOFX) has a volatility of 8.22%. This indicates that MGRIX experiences smaller price fluctuations and is considered to be less risky than MIOFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MGRIX	MIOFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.41%	8.22%	-1.81%
Volatility (6M) Calculated over the trailing 6-month period	12.86%	18.00%	-5.14%
Volatility (1Y) Calculated over the trailing 1-year period	16.59%	21.05%	-4.46%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	23.44%	20.17%	+3.27%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.18%	18.79%	+3.39%

MGRIX vs. MIOFX - Expense Ratio Comparison

MGRIX has a 1.34% expense ratio, which is lower than MIOFX's 1.50% expense ratio.

Dividends

MGRIX vs. MIOFX - Dividend Comparison

MGRIX's dividend yield for the trailing twelve months is around 15.75%, more than MIOFX's 4.11% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MGRIX Marsico Growth Fund	15.75%	16.28%	16.44%	1.76%	0.00%	37.52%	6.21%	10.14%	14.36%	9.95%	0.84%	36.82%
MIOFX Marsico International Opportunities Fund	4.11%	4.75%	4.95%	0.38%	0.17%	13.41%	2.44%	4.20%	9.36%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both MGRIX and MIOFX in my portfolio?

MGRIX and MIOFX 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, MGRIX or MIOFX?

MIOFX has higher volatility (8.22%) compared to MGRIX (6.41%). In terms of maximum drawdown, MGRIX dropped -56.50% vs MIOFX's -63.83%.

Which has better risk-adjusted returns?

MIOFX currently has the higher Sharpe Ratio (1.25 vs 0.89), 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.