SPMD vs. IDMO
SPMD (SPDR Portfolio S&P 400 Mid Cap ETF) and IDMO (Invesco S&P International Developed Momentum ETF) are both exchange-traded funds - SPMD is a Mid Cap Blend Equities fund tracking the S&P MidCap 400 Index, while IDMO is a Momentum fund tracking the S&P Momentum Developed ex U.S. & South Korea LargeMidCap Index. Both are passively managed. Over the past 10 years, SPMD returned 11.85%/yr vs 12.66%/yr for IDMO. At a 0.50 correlation, their price movements are largely independent. SPMD charges 0.05%/yr vs 0.25%/yr for IDMO.
Performance
SPMD vs. IDMO - Performance Comparison
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Returns By Period
In the year-to-date period, SPMD achieves a 15.96% return, which is significantly higher than IDMO's 9.85% return. Over the past 10 years, SPMD has underperformed IDMO with an annualized return of 11.85%, while IDMO has yielded a comparatively higher 12.66% annualized return.
SPMD
- 1D
- 0.39%
- 1M
- 5.72%
- YTD
- 15.96%
- 6M
- 14.71%
- 1Y
- 28.46%
- 3Y*
- 15.58%
- 5Y*
- 8.72%
- 10Y*
- 11.85%
IDMO
- 1D
- 1.55%
- 1M
- 3.05%
- YTD
- 9.85%
- 6M
- 11.36%
- 1Y
- 26.66%
- 3Y*
- 25.38%
- 5Y*
- 15.75%
- 10Y*
- 12.66%
SPMD vs. IDMO - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
SPMD SPDR Portfolio S&P 400 Mid Cap ETF | 15.96% | 7.44% | 13.91% | 16.48% | -13.13% | 24.76% | 13.46% | 25.19% | -10.34% | 15.12% |
IDMO Invesco S&P International Developed Momentum ETF | 9.85% | 42.17% | 12.79% | 20.16% | -12.03% | 14.31% | 22.01% | 26.09% | -16.66% | 29.21% |
Correlation
The correlation between SPMD and IDMO is 0.64, 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 | 0.64 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.65 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.69 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.56 |
Correlation (All Time) Calculated using the full available price history since Feb 24, 2012 | 0.50 |
The correlation between SPMD and IDMO shifts across timeframes, from 0.50 (all time) to 0.69 (5 years), reflecting how their relationship changes across market environments.
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Return for Risk
SPMD vs. IDMO — Risk / Return Rank
SPMD
IDMO
SPMD vs. IDMO - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for SPDR Portfolio S&P 400 Mid Cap ETF (SPMD) and Invesco S&P International Developed Momentum ETF (IDMO). 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.
| SPMD | IDMO | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.31 | ||
| Sortino ratioReturn per unit of downside risk | +0.42 | ||
| Omega ratioGain probability vs. loss probability | 1.32 | 1.28 | +0.04 |
| Calmar ratioReturn relative to maximum drawdown | 3.23 | 2.18 | +1.05 |
| Martin ratioReturn relative to average drawdown | 11.84 | 8.81 | +3.03 |
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Drawdowns
SPMD vs. IDMO - Drawdown Comparison
The maximum SPMD drawdown since its inception was -57.62%, which is greater than IDMO's maximum drawdown of -39.38%. Use the drawdown chart below to compare losses from any high point for SPMD and IDMO.
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Drawdown Indicators
| SPMD | IDMO | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -57.62% | -39.38% | -18.24% |
Max Drawdown (1Y)Largest decline over 1 year | -8.86% | -12.31% | +3.45% |
Max Drawdown (3Y)Largest decline over 3 years | -24.08% | -12.65% | -11.43% |
Max Drawdown (5Y)Largest decline over 5 years | -24.08% | -27.07% | +2.99% |
Max Drawdown (10Y)Largest decline over 10 years | -41.86% | -31.34% | -10.52% |
Current DrawdownCurrent decline from peak | 0.00% | -0.39% | +0.39% |
Average DrawdownAverage peak-to-trough decline | -8.11% | -9.74% | +1.63% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 2.41% | 3.03% | -0.62% |
Volatility
SPMD vs. IDMO - Volatility Comparison
The current volatility for SPDR Portfolio S&P 400 Mid Cap ETF (SPMD) is 5.07%, while Invesco S&P International Developed Momentum ETF (IDMO) has a volatility of 8.02%. This indicates that SPMD experiences smaller price fluctuations and is considered to be less risky than IDMO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| SPMD | IDMO | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 5.07% | 8.02% | -2.95% |
Volatility (6M)Calculated over the trailing 6-month period | 11.74% | 16.08% | -4.34% |
Volatility (1Y)Calculated over the trailing 1-year period | 15.86% | 17.95% | -2.09% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 19.75% | 18.05% | +1.70% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 21.20% | 18.19% | +3.01% |
SPMD vs. IDMO - Expense Ratio Comparison
SPMD has a 0.05% expense ratio, which is lower than IDMO's 0.25% 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
SPMD vs. IDMO - Dividend Comparison
SPMD's dividend yield for the trailing twelve months is around 1.21%, less than IDMO's 3.46% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
IDMO Invesco S&P International Developed Momentum ETF | 3.46% | 3.71% | 2.24% | 2.89% | 3.66% | 1.81% | 1.63% | 2.78% | 3.27% | 3.08% | 2.18% | 2.52% |
SPMD SPDR Portfolio S&P 400 Mid Cap ETF | 1.21% | 1.39% | 1.42% | 1.47% | 1.64% | 1.24% | 1.30% | 1.57% | 1.85% | 1.97% | 2.13% | 5.33% |
Frequently Asked Questions
SPMD and IDMO have a correlation of 0.64, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
IDMO has higher volatility (8.02%) compared to SPMD (5.07%). In terms of maximum drawdown, SPMD dropped -57.62% vs IDMO's -39.38%.
On 10-year performance, IDMO leads with 12.66% vs 11.85% for SPMD. On fees, SPMD is cheaper at 0.05% per year. On volatility, SPMD has been the lower-risk option at 5.07%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 10-year period, IDMO has performed better with a 12.66% return vs 11.85%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
SPMD is cheaper with a 0.05% expense ratio, compared with 0.25% for IDMO.
IDMO has the higher dividend yield at 3.46%, compared with 1.21% for SPMD.
SPMD is categorized as Mid Cap Blend Equities, while IDMO is Momentum. SPMD tracks S&P MidCap 400 Index, while IDMO tracks S&P Momentum Developed ex U.S. & South Korea LargeMidCap Index. They also come from different issuers: State Street and Invesco. Their fees differ too: 0.05% for SPMD and 0.25% for IDMO.
SPMD currently has the higher Sharpe Ratio (1.81 vs 1.50), 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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