IDMO vs. RSP

Last updated Jun 4, 2026

IDMO (Invesco S&P International Developed Momentum ETF) and RSP (Invesco S&P 500 Equal Weight ETF) are both exchange-traded funds - IDMO is a Momentum fund tracking the S&P Momentum Developed ex U.S. & South Korea LargeMidCap Index, while RSP is a S&P 500 fund tracking the S&P 500 Equal Weight Index. Both are passively managed. Over the past 10 years, IDMO returned 12.09%/yr vs 11.86%/yr for RSP. A 0.50 correlation means they provide meaningful diversification when combined. IDMO charges 0.25%/yr vs 0.20%/yr for RSP.

Performance

IDMO vs. RSP - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Invesco S&P International Developed Momentum ETF (IDMO) and Invesco S&P 500 Equal Weight ETF (RSP). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IDMO achieves a 7.74% return, which is significantly lower than RSP's 9.70% return. Both investments have delivered pretty close results over the past 10 years, with IDMO having a 12.09% annualized return and RSP not far behind at 11.86%.

IDMO

• 1D: -1.16%
• 1M: 2.20%
• YTD: 7.74%
• 6M: 12.22%
• 1Y: 23.09%
• 3Y*: 25.70%
• 5Y*: 15.53%
• 10Y*: 12.09%

RSP

• 1D: -0.38%
• 1M: 3.77%
• YTD: 9.70%
• 6M: 10.18%
• 1Y: 19.50%
• 3Y*: 15.23%
• 5Y*: 8.33%
• 10Y*: 11.86%

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

IDMO vs. RSP - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
IDMO Invesco S&P International Developed Momentum ETF	7.74%	42.17%	12.79%	20.16%	-12.03%	14.31%	22.01%	26.09%	-16.66%	29.21%
RSP Invesco S&P 500 Equal Weight ETF	9.70%	11.21%	12.79%	13.70%	-11.62%	29.41%	12.66%	28.91%	-7.84%	18.52%

Correlation

The correlation between IDMO and RSP is 0.61, 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	0.61
Correlation (3Y) Calculated over the trailing 3-year period	0.64
Correlation (5Y) Calculated over the trailing 5-year period	0.70
Correlation (10Y) Calculated over the trailing 10-year period	0.57
Correlation (All Time) Calculated using the full available price history since Feb 27, 2012	0.50

The correlation between IDMO and RSP shifts across timeframes, from 0.50 (all time) to 0.70 (5 years), reflecting how their relationship changes across market environments.

IDMO vs. RSP - Sectors Allocation Comparison

Sectors	IDMO	RSP
Financial Services	42.4%	14.5%
Industrials	22.6%	14.1%
Basic Materials	10.2%	4.1%
Utilities	8.4%	6.1%
Technology	5.3%	19.6%
Consumer Defensive	2.5%	6.5%
Communication Services	2.2%	3.7%
Real Estate	2.0%	6.0%
Energy	1.9%	4.5%
Consumer Cyclical	1.4%	9.9%
Healthcare	1.2%	11.0%

Return for Risk

IDMO vs. RSP — Risk / Return Rank

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

IDMO

IDMO Risk / Return Rank: 40
IDMO Sharpe Ratio Rank: 37
IDMO Sortino Ratio Rank: 39
IDMO Omega Ratio Rank: 38
IDMO Calmar Ratio Rank: 37
IDMO Martin Ratio Rank: 47

RSP

RSP Risk / Return Rank: 49
RSP Sharpe Ratio Rank: 48
RSP Sortino Ratio Rank: 49
RSP Omega Ratio Rank: 46
RSP Calmar Ratio Rank: 50
RSP Martin Ratio Rank: 54

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.

IDMO vs. RSP - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Invesco S&P International Developed Momentum ETF (IDMO) and Invesco S&P 500 Equal Weight ETF (RSP). 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.

	IDMO	RSP	Difference
Sharpe ratio: Return per unit of total volatility	1.37	1.70	-0.32
Sortino ratio: Return per unit of downside risk	2.03	2.47	-0.44
Omega ratio: Gain probability vs. loss probability	1.25	1.30	-0.04
Calmar ratio: Return relative to maximum drawdown	1.88	2.49	-0.61
Martin ratio: Return relative to average drawdown	7.84	9.48	-1.63
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

IDMO vs. RSP - Sharpe Ratio Comparison

The current IDMO Sharpe Ratio is 1.37, which is comparable to the RSP Sharpe Ratio of 1.70. The chart below compares the historical Sharpe Ratios of IDMO and RSP, 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

	IDMO	RSP	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.37	1.70	-0.32
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.88	0.52	+0.36
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.67	0.65	+0.02
Sharpe Ratio (All Time) Calculated using the full available price history	0.45	0.57	-0.11

Drawdowns

IDMO vs. RSP - Drawdown Comparison

The maximum IDMO drawdown since its inception was -39.38%, smaller than the maximum RSP drawdown of -59.92%. Use the drawdown chart below to compare losses from any high point for IDMO and RSP.

Drawdown Indicators

	IDMO	RSP	Difference
Max Drawdown Largest peak-to-trough decline	-39.38%	-59.92%	+20.54%
Max Drawdown (1Y) Largest decline over 1 year	-12.31%	-7.85%	-4.46%
Max Drawdown (3Y) Largest decline over 3 years	-12.65%	-17.81%	+5.16%
Max Drawdown (5Y) Largest decline over 5 years	-27.07%	-21.38%	-5.69%
Max Drawdown (10Y) Largest decline over 10 years	-31.34%	-39.04%	+7.70%
Current Drawdown Current decline from peak	-2.31%	-0.38%	-1.93%
Average Drawdown Average peak-to-trough decline	-9.76%	-6.65%	-3.11%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.95%	2.06%	+0.89%

Volatility

IDMO vs. RSP - Volatility Comparison

Invesco S&P International Developed Momentum ETF (IDMO) has a higher volatility of 6.43% compared to Invesco S&P 500 Equal Weight ETF (RSP) at 2.56%. This indicates that IDMO's price experiences larger fluctuations and is considered to be riskier than RSP based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IDMO	RSP	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.43%	2.56%	+3.87%
Volatility (6M) Calculated over the trailing 6-month period	14.91%	8.29%	+6.62%
Volatility (1Y) Calculated over the trailing 1-year period	16.89%	11.56%	+5.33%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.84%	16.18%	+1.66%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.12%	18.35%	-0.23%

IDMO vs. RSP - Expense Ratio Comparison

IDMO has a 0.25% expense ratio, which is higher than RSP's 0.20% 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

IDMO vs. RSP - Dividend Comparison

IDMO's dividend yield for the trailing twelve months is around 3.53%, more than RSP's 1.49% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IDMO Invesco S&P International Developed Momentum ETF	3.53%	3.71%	2.24%	2.89%	3.66%	1.81%	1.63%	2.78%	3.27%	3.08%	2.18%	2.52%
RSP Invesco S&P 500 Equal Weight ETF	1.49%	1.64%	1.52%	1.64%	1.82%	1.28%	1.64%	1.69%	2.02%	1.52%	1.20%	1.70%

Frequently Asked Questions

Can I hold both IDMO and RSP in my portfolio?

IDMO and RSP have a correlation of 0.61, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, IDMO or RSP?

IDMO has higher volatility (6.43%) compared to RSP (2.56%). In terms of maximum drawdown, IDMO dropped -39.38% vs RSP's -59.92%.

Which ETF is better, IDMO or RSP?

On 10-year performance, IDMO leads with 12.09% vs 11.86% for RSP. On fees, RSP is cheaper at 0.20% per year. On volatility, RSP has been the lower-risk option at 2.56%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, IDMO or RSP?

Over the 10-year period, IDMO has performed better with a 12.09% return vs 11.86%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, IDMO or RSP?

RSP is cheaper with a 0.20% expense ratio, compared with 0.25% for IDMO.

Which ETF pays a higher dividend yield, IDMO or RSP?

IDMO has the higher dividend yield at 3.53%, compared with 1.49% for RSP.

What is the main difference between IDMO and RSP?

IDMO is categorized as Momentum, while RSP is S&P 500. IDMO tracks S&P Momentum Developed ex U.S. & South Korea LargeMidCap Index, while RSP tracks S&P 500 Equal Weight Index. Their fees differ too: 0.25% for IDMO and 0.20% for RSP.

Which has better risk-adjusted returns?

RSP currently has the higher Sharpe Ratio (1.70 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.