MDY vs. VOO
Compare and contrast key facts about SPDR S&P MidCap 400 ETF (MDY) and Vanguard S&P 500 ETF (VOO).
MDY and VOO are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. MDY is a passively managed fund by State Street that tracks the performance of the S&P MidCap 400 Index. It was launched on May 4, 1995. VOO is a passively managed fund by Vanguard that tracks the performance of the S&P 500 Index. It was launched on Sep 7, 2010. Both MDY and VOO are passive ETFs, meaning that they are not actively managed but aim to replicate the performance of the underlying index as closely as possible.
Performance
MDY vs. VOO - Performance Comparison
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MDY vs. VOO - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
MDY SPDR S&P MidCap 400 ETF | 3.32% | 7.19% | 13.64% | 16.07% | -13.28% | 24.53% | 13.50% | 25.78% | -11.29% | 15.93% |
VOO Vanguard S&P 500 ETF | -3.66% | 17.82% | 24.98% | 26.32% | -18.17% | 28.79% | 18.32% | 31.37% | -4.50% | 21.77% |
Returns By Period
In the year-to-date period, MDY achieves a 3.32% return, which is significantly higher than VOO's -3.66% return. Over the past 10 years, MDY has underperformed VOO with an annualized return of 10.34%, while VOO has yielded a comparatively higher 14.14% annualized return.
MDY
- 1D
- 0.82%
- 1M
- -5.32%
- YTD
- 3.32%
- 6M
- 4.62%
- 1Y
- 17.32%
- 3Y*
- 12.06%
- 5Y*
- 6.51%
- 10Y*
- 10.34%
VOO
- 1D
- 0.79%
- 1M
- -4.29%
- YTD
- -3.66%
- 6M
- -1.41%
- 1Y
- 18.17%
- 3Y*
- 18.58%
- 5Y*
- 11.93%
- 10Y*
- 14.14%
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MDY vs. VOO - Expense Ratio Comparison
MDY has a 0.23% expense ratio, which is higher than VOO's 0.03% 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%.
Return for Risk
MDY vs. VOO — Risk / Return Rank
MDY
VOO
MDY vs. VOO - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for SPDR S&P MidCap 400 ETF (MDY) and Vanguard S&P 500 ETF (VOO). 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.
| MDY | VOO | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.82 | 1.01 | -0.18 |
Sortino ratioReturn per unit of downside risk | 1.30 | 1.53 | -0.24 |
Omega ratioGain probability vs. loss probability | 1.18 | 1.23 | -0.05 |
Calmar ratioReturn relative to maximum drawdown | 1.28 | 1.55 | -0.28 |
Martin ratioReturn relative to average drawdown | 5.46 | 7.31 | -1.85 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| MDY | VOO | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.82 | 1.01 | -0.18 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.33 | 0.71 | -0.38 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.49 | 0.79 | -0.30 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.51 | 0.83 | -0.32 |
Correlation
The correlation between MDY and VOO is 0.87, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.
Dividends
MDY vs. VOO - Dividend Comparison
MDY's dividend yield for the trailing twelve months is around 1.15%, less than VOO's 1.18% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
MDY SPDR S&P MidCap 400 ETF | 1.15% | 1.15% | 1.18% | 1.21% | 1.37% | 0.96% | 1.12% | 1.34% | 1.39% | 1.18% | 1.31% | 1.35% |
VOO Vanguard S&P 500 ETF | 1.18% | 1.13% | 1.24% | 1.46% | 1.69% | 1.25% | 1.54% | 1.88% | 2.06% | 1.78% | 2.02% | 2.10% |
Drawdowns
MDY vs. VOO - Drawdown Comparison
The maximum MDY drawdown since its inception was -55.33%, which is greater than VOO's maximum drawdown of -33.99%. Use the drawdown chart below to compare losses from any high point for MDY and VOO.
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Drawdown Indicators
| MDY | VOO | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -55.33% | -33.99% | -21.34% |
Max Drawdown (1Y)Largest decline over 1 year | -14.07% | -11.98% | -2.09% |
Max Drawdown (5Y)Largest decline over 5 years | -24.03% | -24.52% | +0.49% |
Max Drawdown (10Y)Largest decline over 10 years | -42.22% | -33.99% | -8.23% |
Current DrawdownCurrent decline from peak | -5.36% | -5.55% | +0.19% |
Average DrawdownAverage peak-to-trough decline | -7.06% | -3.72% | -3.34% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.29% | 2.55% | +0.74% |
Volatility
MDY vs. VOO - Volatility Comparison
SPDR S&P MidCap 400 ETF (MDY) has a higher volatility of 6.42% compared to Vanguard S&P 500 ETF (VOO) at 5.34%. This indicates that MDY's price experiences larger fluctuations and is considered to be riskier than VOO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| MDY | VOO | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 6.42% | 5.34% | +1.08% |
Volatility (6M)Calculated over the trailing 6-month period | 11.89% | 9.47% | +2.42% |
Volatility (1Y)Calculated over the trailing 1-year period | 21.11% | 18.11% | +3.00% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 19.78% | 16.82% | +2.96% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 21.17% | 17.99% | +3.18% |