MGC vs. MAIIX

Last updated Jun 4, 2026

MGC (Vanguard Mega Cap ETF) and MAIIX (iShares MSCI EAFE International Index Fund) are both funds - MGC is a Large Cap Blend Equities fund tracking the CRSP US Mega Cap Index, while MAIIX is a Foreign Large Cap Equities fund managed by BlackRock. Over the past 10 years, MGC returned 16.36%/yr vs 9.36%/yr for MAIIX. A 0.79 correlation means they provide meaningful diversification when combined. MGC charges 0.05%/yr vs 0.09%/yr for MAIIX.

Performance

MGC vs. MAIIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Mega Cap ETF (MGC) and iShares MSCI EAFE International Index Fund (MAIIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MGC achieves a 10.80% return, which is significantly higher than MAIIX's 9.66% return. Over the past 10 years, MGC has outperformed MAIIX with an annualized return of 16.36%, while MAIIX has yielded a comparatively lower 9.36% annualized return.

MGC

• 1D: -0.79%
• 1M: 5.59%
• YTD: 10.80%
• 6M: 10.75%
• 1Y: 29.68%
• 3Y*: 23.87%
• 5Y*: 14.70%
• 10Y*: 16.36%

MAIIX

• 1D: 0.38%
• 1M: 4.17%
• YTD: 9.66%
• 6M: 12.02%
• 1Y: 22.42%
• 3Y*: 17.16%
• 5Y*: 8.87%
• 10Y*: 9.36%

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

MGC vs. MAIIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MGC Vanguard Mega Cap ETF	10.80%	19.31%	27.16%	29.77%	-19.95%	27.58%	21.57%	31.14%	-3.45%	22.61%
MAIIX iShares MSCI EAFE International Index Fund	9.66%	31.62%	3.65%	18.35%	-14.15%	11.25%	8.03%	21.82%	-13.43%	25.24%

Correlation

The correlation between MGC and MAIIX is 0.73, 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	0.73
Correlation (3Y) Calculated over the trailing 3-year period	0.68
Correlation (5Y) Calculated over the trailing 5-year period	0.73
Correlation (10Y) Calculated over the trailing 10-year period	0.75
Correlation (All Time) Calculated using the full available price history since Dec 28, 2007	0.79

The correlation between MGC and MAIIX shifts across timeframes, from 0.68 (3 years) to 0.79 (all time), reflecting how their relationship changes across market environments.

Return for Risk

MGC vs. MAIIX — Risk / Return Rank

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

MGC

MGC Risk / Return Rank: 69
MGC Sharpe Ratio Rank: 73
MGC Sortino Ratio Rank: 71
MGC Omega Ratio Rank: 71
MGC Calmar Ratio Rank: 60
MGC Martin Ratio Rank: 71

MAIIX

MAIIX Risk / Return Rank: 26
MAIIX Sharpe Ratio Rank: 25
MAIIX Sortino Ratio Rank: 24
MAIIX Omega Ratio Rank: 25
MAIIX Calmar Ratio Rank: 26
MAIIX Martin Ratio Rank: 31

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.

MGC vs. MAIIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Mega Cap ETF (MGC) and iShares MSCI EAFE International Index Fund (MAIIX). 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.

	MGC	MAIIX	Difference
Sharpe ratio Return per unit of total volatility	2.42	1.43	+0.99
Sortino ratio Return per unit of downside risk	3.30	2.06	+1.24
Omega ratio Gain probability vs. loss probability	1.43	1.26	+0.17
Calmar ratio Return relative to maximum drawdown	3.03	1.91	+1.12
Martin ratio Return relative to average drawdown	13.61	7.14	+6.47
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MGC vs. MAIIX - Sharpe Ratio Comparison

The current MGC Sharpe Ratio is 2.42, which is higher than the MAIIX Sharpe Ratio of 1.43. The chart below compares the historical Sharpe Ratios of MGC and MAIIX, 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

	MGC	MAIIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.42	1.43	+0.99
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.86	0.55	+0.30
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.90	0.56	+0.34
Sharpe Ratio (All Time) Calculated using the full available price history	0.60	0.31	+0.29

Drawdowns

MGC vs. MAIIX - Drawdown Comparison

The maximum MGC drawdown since its inception was -51.93%, smaller than the maximum MAIIX drawdown of -61.05%. Use the drawdown chart below to compare losses from any high point for MGC and MAIIX.

Drawdown Indicators

	MGC	MAIIX	Difference
Max Drawdown Largest peak-to-trough decline	-51.93%	-61.05%	+9.12%
Max Drawdown (1Y) Largest decline over 1 year	-9.85%	-11.31%	+1.46%
Max Drawdown (3Y) Largest decline over 3 years	-19.28%	-13.68%	-5.60%
Max Drawdown (5Y) Largest decline over 5 years	-25.74%	-29.31%	+3.57%
Max Drawdown (10Y) Largest decline over 10 years	-33.07%	-34.01%	+0.94%
Current Drawdown Current decline from peak	-0.79%	-0.38%	-0.41%
Average Drawdown Average peak-to-trough decline	-7.06%	-15.34%	+8.28%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.19%	3.02%	-0.83%

Volatility

MGC vs. MAIIX - Volatility Comparison

The current volatility for Vanguard Mega Cap ETF (MGC) is 3.04%, while iShares MSCI EAFE International Index Fund (MAIIX) has a volatility of 4.72%. This indicates that MGC experiences smaller price fluctuations and is considered to be less risky than MAIIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MGC	MAIIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.04%	4.72%	-1.68%
Volatility (6M) Calculated over the trailing 6-month period	9.27%	12.26%	-2.99%
Volatility (1Y) Calculated over the trailing 1-year period	12.32%	15.11%	-2.79%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.27%	16.14%	+1.13%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.21%	16.65%	+1.56%

MGC vs. MAIIX - Expense Ratio Comparison

MGC has a 0.05% expense ratio, which is lower than MAIIX's 0.09% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

MGC vs. MAIIX - Dividend Comparison

MGC's dividend yield for the trailing twelve months is around 0.87%, less than MAIIX's 3.38% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MAIIX iShares MSCI EAFE International Index Fund	3.38%	3.71%	3.38%	3.16%	2.76%	3.00%	1.94%	3.29%	4.53%	2.42%	2.81%	2.40%
MGC Vanguard Mega Cap ETF	0.87%	0.93%	1.15%	1.35%	1.65%	1.17%	1.45%	1.81%	2.10%	1.83%	2.14%	2.11%

Frequently Asked Questions

Can I hold both MGC and MAIIX in my portfolio?

MGC and MAIIX have a correlation of 0.73, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MGC or MAIIX?

MAIIX has higher volatility (4.72%) compared to MGC (3.04%). In terms of maximum drawdown, MGC dropped -51.93% vs MAIIX's -61.05%.

Which has better risk-adjusted returns?

MGC currently has the higher Sharpe Ratio (2.42 vs 1.43), 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.