BRMKX vs. MDY
BRMKX (iShares Russell Mid-Cap Index Fund) and MDY (SPDR S&P MidCap 400 ETF) are both Mid Cap Blend Equities funds. Over the past 10 years, BRMKX returned 11.53%/yr vs 10.73%/yr for MDY. Their 0.96 correlation means they have historically moved very closely together. BRMKX charges 0.06%/yr vs 0.23%/yr for MDY.
Performance
BRMKX vs. MDY - Performance Comparison
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Returns By Period
In the year-to-date period, BRMKX achieves a 14.65% return, which is significantly lower than MDY's 15.62% return. Over the past 10 years, BRMKX has outperformed MDY with an annualized return of 11.53%, while MDY has yielded a comparatively lower 10.73% annualized return.
BRMKX
- 1D
- -0.28%
- 1M
- -0.65%
- 6M
- 10.51%
- YTD
- 14.65%
- 1Y
- 20.31%
- 3Y*
- 14.89%
- 5Y*
- 8.21%
- 10Y*
- 11.53%
- ALL TIME*
- 11.88%
MDY
- 1D
- 1.13%
- 1M
- 0.06%
- 6M
- 10.25%
- YTD
- 15.62%
- 1Y
- 23.78%
- 3Y*
- 13.67%
- 5Y*
- 8.60%
- 10Y*
- 10.73%
- ALL TIME*
- 11.33%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $0.00 | $0.00 | $0.00 | |
| $391.27M | $397.96M | $475.96M |
BRMKX vs. MDY - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
BRMKX iShares Russell Mid-Cap Index Fund | 14.65% | 10.48% | 15.28% | 17.30% | -17.22% | 22.52% | 17.17% | 30.47% | -9.09% | 17.74% |
MDY SPDR S&P MidCap 400 ETF | 15.62% | 7.19% | 13.64% | 16.07% | -13.28% | 24.53% | 13.50% | 25.78% | -11.29% | 15.93% |
Correlation
The correlation between BRMKX and MDY is 0.95 - they have historically moved very closely together. At this level, their price movements offset little of one another.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.95 |
Correlation (3Y) Balances recent behavior with more history. | 0.96 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.97 |
Correlation (10Y) Provides a long-term view across more market conditions. | 0.96 |
Correlation (All Time) Calculated using the full available price history since Jan 4, 2016 | 0.96 |
The correlation between BRMKX and MDY has been stable across timeframes, ranging from 0.95 to 0.97 - a consistent structural relationship.
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Return for Risk
BRMKX vs. MDY — Risk / Return Rank
BRMKX
MDY
BRMKX vs. MDY - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares Russell Mid-Cap Index Fund (BRMKX) and SPDR S&P MidCap 400 ETF (MDY). 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.
| BRMKX | MDY | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.16 | ||
| Sortino ratioReturn per unit of downside risk | -0.26 | ||
| Omega ratioGain probability vs. loss probability | 1.24 | 1.27 | -0.03 |
| Calmar ratioReturn relative to maximum drawdown | 2.30 | 2.71 | -0.41 |
| Martin ratioReturn relative to average drawdown | 8.93 | 9.79 | -0.86 |
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Drawdowns
BRMKX vs. MDY - Drawdown Comparison
The maximum BRMKX drawdown since its inception was -40.20%, smaller than the maximum MDY drawdown of -55.33%. Use the drawdown chart below to compare losses from any high point for BRMKX and MDY.
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Drawdown Indicators
| BRMKX | MDY | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -40.20% | -55.33% | +15.13% |
Max Drawdown (1Y)Largest decline over 1 year | -8.17% | -8.82% | +0.65% |
Max Drawdown (3Y)Largest decline over 3 years | -21.07% | -24.03% | +2.96% |
Max Drawdown (5Y)Largest decline over 5 years | -26.04% | -24.03% | -2.01% |
Max Drawdown (10Y)Largest decline over 10 years | -40.20% | -42.22% | +2.02% |
Current DrawdownCurrent decline from peak | -0.95% | -1.32% | +0.37% |
Average DrawdownAverage peak-to-trough decline | -5.58% | -7.00% | +1.42% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 2.10% | 2.43% | -0.33% |
Volatility
BRMKX vs. MDY - Volatility Comparison
The current volatility for iShares Russell Mid-Cap Index Fund (BRMKX) is 2.45%, while SPDR S&P MidCap 400 ETF (MDY) has a volatility of 3.62%. This indicates that BRMKX experiences smaller price fluctuations and is considered to be less risky than MDY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| BRMKX | MDY | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 2.45% | 3.62% | -1.17% |
Volatility (6M)Calculated over the trailing 6-month period | 10.22% | 11.60% | -1.38% |
Volatility (1Y)Calculated over the trailing 1-year period | 13.72% | 15.63% | -1.91% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 18.24% | 19.70% | -1.46% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 19.26% | 21.15% | -1.89% |
BRMKX vs. MDY - Expense Ratio Comparison
BRMKX has a 0.06% expense ratio, which is lower than MDY's 0.23% 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
BRMKX vs. MDY - Dividend Comparison
BRMKX's dividend yield for the trailing twelve months is around 5.21%, more than MDY's 1.01% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
BRMKX iShares Russell Mid-Cap Index Fund | 5.21% | 5.92% | 6.43% | 3.02% | 3.67% | 4.07% | 2.86% | 3.95% | 3.87% | 19.24% | 2.11% | 0.00% |
MDY SPDR S&P MidCap 400 ETF | 1.01% | 1.15% | 1.18% | 1.21% | 1.37% | 0.96% | 1.12% | 1.34% | 1.39% | 1.18% | 1.31% | 1.35% |
Frequently Asked Questions
With a correlation of 0.95, BRMKX and MDY move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.
MDY has higher volatility (3.62%) compared to BRMKX (2.45%). In terms of maximum drawdown, BRMKX dropped -40.20% vs MDY's -55.33%.
MDY currently has the higher Sharpe Ratio (1.53 vs 1.37), 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.
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