RSP vs. IDMO

Last updated Jun 4, 2026

RSP (Invesco S&P 500 Equal Weight ETF) and IDMO (Invesco S&P International Developed Momentum ETF) are both exchange-traded funds - RSP is a S&P 500 fund tracking the S&P 500 Equal Weight 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, RSP returned 11.86%/yr vs 12.09%/yr for IDMO. A 0.50 correlation means they provide meaningful diversification when combined. RSP charges 0.20%/yr vs 0.25%/yr for IDMO.

Performance

RSP vs. IDMO - Performance Comparison

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

Returns By Period

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

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%

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

RSP vs. IDMO - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
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%
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%

Correlation

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

RSP vs. IDMO - Sectors Allocation Comparison

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

Return for Risk

RSP vs. IDMO — Risk / Return Rank

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

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

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

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.

RSP vs. IDMO - Risk-Adjusted Trends Comparison

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

	RSP	IDMO	Difference
Sharpe ratio: Return per unit of total volatility	1.70	1.37	+0.32
Sortino ratio: Return per unit of downside risk	2.47	2.03	+0.44
Omega ratio: Gain probability vs. loss probability	1.30	1.25	+0.04
Calmar ratio: Return relative to maximum drawdown	2.49	1.88	+0.61
Martin ratio: Return relative to average drawdown	9.48	7.84	+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.

RSP vs. IDMO - Sharpe Ratio Comparison

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

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

Drawdowns

RSP vs. IDMO - Drawdown Comparison

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

Drawdown Indicators

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

Volatility

RSP vs. IDMO - Volatility Comparison

The current volatility for Invesco S&P 500 Equal Weight ETF (RSP) is 2.56%, while Invesco S&P International Developed Momentum ETF (IDMO) has a volatility of 6.43%. This indicates that RSP 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.

Volatility by Period

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

RSP vs. IDMO - Expense Ratio Comparison

RSP has a 0.20% 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

RSP vs. IDMO - Dividend Comparison

RSP's dividend yield for the trailing twelve months is around 1.49%, less than IDMO's 3.53% 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 RSP and IDMO in my portfolio?

RSP and IDMO 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, RSP or IDMO?

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

Which ETF is better, RSP or IDMO?

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, RSP or IDMO?

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, RSP or IDMO?

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

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

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

What is the main difference between RSP and IDMO?

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

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.