BRGKX vs. MDIIX

Last updated Jun 3, 2026

BRGKX (iShares Russell 1000 Large-Cap Index Fund Class K) and MDIIX (iShares MSCI EAFE International Index Fund) are both mutual funds - BRGKX is a Large Cap Blend Equities fund tracking the Russell 1000 Index, while MDIIX is a Foreign Large Cap Equities fund tracking the MSCI EAFE Index (Net). Both are passively managed. Over the past 10 years, BRGKX returned 15.20%/yr vs 9.05%/yr for MDIIX. A 0.79 correlation means they provide meaningful diversification when combined. BRGKX charges 0.06%/yr vs 0.35%/yr for MDIIX.

Performance

BRGKX vs. MDIIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares Russell 1000 Large-Cap Index Fund Class K (BRGKX) and iShares MSCI EAFE International Index Fund (MDIIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BRGKX achieves a 11.19% return, which is significantly higher than MDIIX's 9.11% return. Over the past 10 years, BRGKX has outperformed MDIIX with an annualized return of 15.20%, while MDIIX has yielded a comparatively lower 9.05% annualized return.

BRGKX

• 1D: 0.28%
• 1M: 5.11%
• YTD: 11.19%
• 6M: 11.51%
• 1Y: 28.65%
• 3Y*: 22.34%
• 5Y*: 13.30%
• 10Y*: 15.20%

MDIIX

• 1D: -0.29%
• 1M: 2.60%
• YTD: 9.11%
• 6M: 12.08%
• 1Y: 20.75%
• 3Y*: 16.73%
• 5Y*: 8.42%
• 10Y*: 9.05%

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

BRGKX vs. MDIIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BRGKX iShares Russell 1000 Large-Cap Index Fund Class K	11.19%	17.28%	24.44%	26.49%	-19.13%	26.24%	20.85%	31.30%	-4.86%	21.18%
MDIIX iShares MSCI EAFE International Index Fund	9.11%	31.36%	3.36%	18.04%	-14.33%	10.98%	7.68%	21.55%	-13.62%	24.84%

Correlation

The correlation between BRGKX and MDIIX is 0.76, 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	0.76
Correlation (3Y) Calculated over the trailing 3-year period	0.73
Correlation (5Y) Calculated over the trailing 5-year period	0.76
Correlation (10Y) Calculated over the trailing 10-year period	0.77
Correlation (All Time) Calculated using the full available price history since Apr 1, 2011	0.79

The correlation between BRGKX and MDIIX has been stable across timeframes, ranging from 0.73 to 0.79 - a consistent structural relationship.

Return for Risk

BRGKX vs. MDIIX — Risk / Return Rank

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

BRGKX

BRGKX Risk / Return Rank: 70
BRGKX Sharpe Ratio Rank: 71
BRGKX Sortino Ratio Rank: 63
BRGKX Omega Ratio Rank: 63
BRGKX Calmar Ratio Rank: 72
BRGKX Martin Ratio Rank: 81

MDIIX

MDIIX Risk / Return Rank: 27
MDIIX Sharpe Ratio Rank: 26
MDIIX Sortino Ratio Rank: 25
MDIIX Omega Ratio Rank: 26
MDIIX Calmar Ratio Rank: 27
MDIIX Martin Ratio Rank: 32

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.

BRGKX vs. MDIIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Russell 1000 Large-Cap Index Fund Class K (BRGKX) and iShares MSCI EAFE International Index Fund (MDIIX). 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.

	BRGKX	MDIIX	Difference
Sharpe ratio Return per unit of total volatility	2.45	1.47	+0.98
Sortino ratio Return per unit of downside risk	3.33	2.11	+1.22
Omega ratio Gain probability vs. loss probability	1.44	1.27	+0.18
Calmar ratio Return relative to maximum drawdown	3.29	1.97	+1.32
Martin ratio Return relative to average drawdown	15.26	7.38	+7.88
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BRGKX vs. MDIIX - Sharpe Ratio Comparison

The current BRGKX Sharpe Ratio is 2.45, which is higher than the MDIIX Sharpe Ratio of 1.47. The chart below compares the historical Sharpe Ratios of BRGKX and MDIIX, 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

	BRGKX	MDIIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.45	1.47	+0.98
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.78	0.52	+0.25
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.84	0.55	+0.29
Sharpe Ratio (All Time) Calculated using the full available price history	0.79	0.30	+0.49

Drawdowns

BRGKX vs. MDIIX - Drawdown Comparison

The maximum BRGKX drawdown since its inception was -34.58%, smaller than the maximum MDIIX drawdown of -61.26%. Use the drawdown chart below to compare losses from any high point for BRGKX and MDIIX.

Drawdown Indicators

	BRGKX	MDIIX	Difference
Max Drawdown Largest peak-to-trough decline	-34.58%	-61.26%	+26.68%
Max Drawdown (1Y) Largest decline over 1 year	-8.85%	-11.32%	+2.47%
Max Drawdown (3Y) Largest decline over 3 years	-19.15%	-13.67%	-5.48%
Max Drawdown (5Y) Largest decline over 5 years	-25.13%	-29.43%	+4.30%
Max Drawdown (10Y) Largest decline over 10 years	-34.58%	-34.34%	-0.24%
Current Drawdown Current decline from peak	0.00%	-0.80%	+0.80%
Average Drawdown Average peak-to-trough decline	-4.05%	-15.57%	+11.52%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.91%	3.03%	-1.12%

Volatility

BRGKX vs. MDIIX - Volatility Comparison

The current volatility for iShares Russell 1000 Large-Cap Index Fund Class K (BRGKX) is 2.84%, while iShares MSCI EAFE International Index Fund (MDIIX) has a volatility of 4.70%. This indicates that BRGKX experiences smaller price fluctuations and is considered to be less risky than MDIIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BRGKX	MDIIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.84%	4.70%	-1.86%
Volatility (6M) Calculated over the trailing 6-month period	9.04%	12.21%	-3.17%
Volatility (1Y) Calculated over the trailing 1-year period	11.99%	15.09%	-3.10%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.18%	16.17%	+1.01%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.22%	16.65%	+1.57%

BRGKX vs. MDIIX - Expense Ratio Comparison

BRGKX has a 0.06% expense ratio, which is lower than MDIIX's 0.35% expense ratio.

Dividends

BRGKX vs. MDIIX - Dividend Comparison

BRGKX's dividend yield for the trailing twelve months is around 2.50%, less than MDIIX's 3.20% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BRGKX iShares Russell 1000 Large-Cap Index Fund Class K	2.50%	2.77%	1.38%	1.49%	1.82%	1.88%	1.51%	2.82%	2.46%	2.31%	3.94%	4.86%
MDIIX iShares MSCI EAFE International Index Fund	3.20%	3.49%	3.15%	2.94%	2.52%	2.78%	1.72%	3.05%	4.24%	2.21%	2.60%	1.94%

Frequently Asked Questions

Can I hold both BRGKX and MDIIX in my portfolio?

BRGKX and MDIIX have a correlation of 0.76, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BRGKX or MDIIX?

MDIIX has higher volatility (4.70%) compared to BRGKX (2.84%). In terms of maximum drawdown, BRGKX dropped -34.58% vs MDIIX's -61.26%.

Which has better risk-adjusted returns?

BRGKX currently has the higher Sharpe Ratio (2.45 vs 1.47), 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.