MDY vs. BRMKX
MDY (SPDR S&P MidCap 400 ETF) and BRMKX (iShares Russell Mid-Cap Index Fund) are both Mid Cap Blend Equities funds. Over the past 10 years, MDY returned 10.79%/yr vs 11.44%/yr for BRMKX. Their 0.96 correlation means they have historically moved very closely together. MDY charges 0.23%/yr vs 0.06%/yr for BRMKX.
Performance
MDY vs. BRMKX - Performance Comparison
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Returns By Period
The year-to-date returns for both investments are quite close, with MDY having a 14.33% return and BRMKX slightly higher at 14.97%. Over the past 10 years, MDY has underperformed BRMKX with an annualized return of 10.79%, while BRMKX has yielded a comparatively higher 11.44% annualized return.
MDY
- 1D
- -0.13%
- 1M
- -1.06%
- 6M
- 9.90%
- YTD
- 14.33%
- 1Y
- 22.39%
- 3Y*
- 12.71%
- 5Y*
- 8.19%
- 10Y*
- 10.79%
- ALL TIME*
- 11.29%
BRMKX
- 1D
- 0.34%
- 1M
- -0.37%
- 6M
- 11.51%
- YTD
- 14.97%
- 1Y
- 20.66%
- 3Y*
- 14.86%
- 5Y*
- 8.27%
- 10Y*
- 11.44%
- ALL TIME*
- 11.91%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $0.00 | $0.00 | $0.00 | |
| $420.06M | $401.19M | $471.25M |
MDY vs. BRMKX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
MDY SPDR S&P MidCap 400 ETF | 14.33% | 7.19% | 13.64% | 16.07% | -13.28% | 24.53% | 13.50% | 25.78% | -11.29% | 15.93% |
BRMKX iShares Russell Mid-Cap Index Fund | 14.97% | 10.48% | 15.28% | 17.30% | -17.22% | 22.52% | 17.17% | 30.47% | -9.09% | 17.74% |
Correlation
The correlation between MDY and BRMKX is 0.96 - 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. | 0.96 |
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 MDY and BRMKX has been stable across timeframes, ranging from 0.96 to 0.97 - a consistent structural relationship.
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Return for Risk
MDY vs. BRMKX — Risk / Return Rank
MDY
BRMKX
MDY vs. BRMKX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for SPDR S&P MidCap 400 ETF (MDY) and iShares Russell Mid-Cap Index Fund (BRMKX). 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.
| MDY | BRMKX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.01 | ||
| Sortino ratioReturn per unit of downside risk | +0.02 | ||
| Omega ratioGain probability vs. loss probability | 1.24 | 1.24 | 0.00 |
| Calmar ratioReturn relative to maximum drawdown | 2.34 | 2.24 | +0.10 |
| Martin ratioReturn relative to average drawdown | 8.48 | 8.70 | -0.22 |
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Drawdowns
MDY vs. BRMKX - Drawdown Comparison
The maximum MDY drawdown since its inception was -55.33%, which is greater than BRMKX's maximum drawdown of -40.20%. Use the drawdown chart below to compare losses from any high point for MDY and BRMKX.
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Drawdown Indicators
| MDY | BRMKX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -55.33% | -40.20% | -15.13% |
Max Drawdown (1Y)Largest decline over 1 year | -8.82% | -8.17% | -0.65% |
Max Drawdown (3Y)Largest decline over 3 years | -24.03% | -21.07% | -2.96% |
Max Drawdown (5Y)Largest decline over 5 years | -24.03% | -26.04% | +2.01% |
Max Drawdown (10Y)Largest decline over 10 years | -42.22% | -40.20% | -2.02% |
Current DrawdownCurrent decline from peak | -2.42% | -0.67% | -1.75% |
Average DrawdownAverage peak-to-trough decline | -7.00% | -5.58% | -1.42% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 2.44% | 2.11% | +0.33% |
Volatility
MDY vs. BRMKX - Volatility Comparison
SPDR S&P MidCap 400 ETF (MDY) has a higher volatility of 3.45% compared to iShares Russell Mid-Cap Index Fund (BRMKX) at 2.44%. This indicates that MDY's price experiences larger fluctuations and is considered to be riskier than BRMKX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| MDY | BRMKX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 3.45% | 2.44% | +1.01% |
Volatility (6M)Calculated over the trailing 6-month period | 11.59% | 10.22% | +1.37% |
Volatility (1Y)Calculated over the trailing 1-year period | 15.69% | 13.73% | +1.96% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 19.69% | 18.25% | +1.44% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 21.14% | 19.26% | +1.88% |
MDY vs. BRMKX - Expense Ratio Comparison
MDY has a 0.23% expense ratio, which is higher than BRMKX's 0.06% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.
Dividends
MDY vs. BRMKX - Dividend Comparison
MDY's dividend yield for the trailing twelve months is around 1.02%, less than BRMKX's 5.20% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
BRMKX iShares Russell Mid-Cap Index Fund | 5.20% | 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 | 1.02% | 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 0.96, MDY and BRMKX 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 (3.45%) compared to BRMKX (2.44%). In terms of maximum drawdown, MDY dropped -55.33% vs BRMKX's -40.20%.
BRMKX currently has the higher Sharpe Ratio (1.33 vs 1.32), 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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