RFG vs. IDMO

Last updated Jul 17, 2026

RFG (Invesco S&P MidCap 400® Pure Growth ETF) and IDMO (Invesco S&P International Developed Momentum ETF) are both exchange-traded funds - RFG is a Small Cap Growth Equities fund tracking the S&P Mid Cap 400 Pure Growth, 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, RFG returned 9.62%/yr vs 12.47%/yr for IDMO. A 0.51 correlation means they provide meaningful diversification when combined. RFG charges 0.35%/yr vs 0.25%/yr for IDMO.

Performance

RFG vs. IDMO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Invesco S&P MidCap 400® Pure Growth ETF (RFG) 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, RFG achieves a 14.62% return, which is significantly higher than IDMO's 8.27% return. Over the past 10 years, RFG has underperformed IDMO with an annualized return of 9.62%, while IDMO has yielded a comparatively higher 12.47% annualized return.

RFG

• 1D: -1.34%
• 1M: -5.53%
• 6M: 5.79%
• YTD: 14.62%
• 1Y: 22.10%
• 3Y*: 15.10%
• 5Y*: 7.34%
• 10Y*: 9.62%

IDMO

• 1D: -1.59%
• 1M: -2.15%
• 6M: 5.42%
• YTD: 8.27%
• 1Y: 21.68%
• 3Y*: 24.84%
• 5Y*: 15.50%
• 10Y*: 12.47%

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

RFG vs. IDMO - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RFG Invesco S&P MidCap 400® Pure Growth ETF	14.62%	8.80%	17.80%	16.42%	-21.70%	13.81%	32.86%	17.09%	-13.98%	20.46%
IDMO Invesco S&P International Developed Momentum ETF	8.27%	42.17%	12.79%	20.16%	-12.03%	14.31%	22.01%	26.09%	-16.66%	29.21%

Correlation

The correlation between RFG and IDMO is 0.67, 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	0.67
Correlation (3Y) Calculated over the trailing 3-year period	0.66
Correlation (5Y) Calculated over the trailing 5-year period	0.70
Correlation (10Y) Calculated over the trailing 10-year period	0.60
Correlation (All Time) Calculated using the full available price history since Feb 24, 2012	0.51

The correlation between RFG and IDMO shifts across timeframes, from 0.51 (all time) to 0.70 (5 years), reflecting how their relationship changes across market environments.

RFG vs. IDMO - Sectors Allocation Comparison

Sectors	RFG	IDMO
Industrials	32.3%	21.3%
Technology	22.8%	6.2%
Healthcare	19.0%	1.1%
Energy	4.9%	1.7%
Consumer Defensive	4.8%	2.5%
Financial Services	3.6%	43.2%
Consumer Cyclical	3.0%	1.5%
Basic Materials	2.9%	10.6%
Utilities	2.6%	7.9%
Real Estate	1.8%	1.8%
Communication Services	0.5%	2.1%

Return for Risk

RFG vs. IDMO — Risk / Return Rank

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

RFG

RFG Risk / Return Rank: 45
RFG Sharpe Ratio Rank: 39
RFG Sortino Ratio Rank: 39
RFG Omega Ratio Rank: 36
RFG Calmar Ratio Rank: 53
RFG Martin Ratio Rank: 58

IDMO

IDMO Risk / Return Rank: 42
IDMO Sharpe Ratio Rank: 39
IDMO Sortino Ratio Rank: 40
IDMO Omega Ratio Rank: 39
IDMO Calmar Ratio Rank: 42
IDMO Martin Ratio Rank: 51

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.

RFG vs. IDMO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Invesco S&P MidCap 400® Pure Growth ETF (RFG) 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.

	RFG	IDMO	Difference
Sharpe ratio: Return per unit of total volatility	1.14	1.18	-0.04
Sortino ratio: Return per unit of downside risk	1.70	1.74	-0.04
Omega ratio: Gain probability vs. loss probability	1.20	1.22	-0.02
Calmar ratio: Return relative to maximum drawdown	2.13	1.77	+0.37
Martin ratio: Return relative to average drawdown	7.99	6.94	+1.05

RFG vs. IDMO - Sharpe Ratio Comparison

The current RFG Sharpe Ratio is 1.14, which is comparable to the IDMO Sharpe Ratio of 1.18. The chart below compares the historical Sharpe Ratios of RFG 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.

Drawdowns

RFG vs. IDMO - Drawdown Comparison

The maximum RFG drawdown since its inception was -51.93%, which is greater than IDMO's maximum drawdown of -39.38%. Use the drawdown chart below to compare losses from any high point for RFG and IDMO.

Drawdown Indicators

	RFG	IDMO	Difference
Max Drawdown Largest peak-to-trough decline	-51.93%	-39.38%	-12.55%
Max Drawdown (1Y) Largest decline over 1 year	-10.41%	-12.31%	+1.90%
Max Drawdown (3Y) Largest decline over 3 years	-26.71%	-12.65%	-14.06%
Max Drawdown (5Y) Largest decline over 5 years	-35.16%	-27.07%	-8.09%
Max Drawdown (10Y) Largest decline over 10 years	-42.92%	-31.34%	-11.58%
Current Drawdown Current decline from peak	-6.98%	-3.93%	-3.05%
Average Drawdown Average peak-to-trough decline	-8.93%	-9.70%	+0.77%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.77%	3.13%	-0.36%

Volatility

RFG vs. IDMO - Volatility Comparison

The current volatility for Invesco S&P MidCap 400® Pure Growth ETF (RFG) is 5.32%, while Invesco S&P International Developed Momentum ETF (IDMO) has a volatility of 5.93%. This indicates that RFG 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

	RFG	IDMO	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.32%	5.93%	-0.61%
Volatility (6M) Calculated over the trailing 6-month period	15.86%	16.86%	-1.00%
Volatility (1Y) Calculated over the trailing 1-year period	19.55%	18.53%	+1.02%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.96%	18.14%	+4.82%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	23.06%	17.89%	+5.17%

RFG vs. IDMO - Expense Ratio Comparison

RFG has a 0.35% expense ratio, which is higher than IDMO's 0.25% expense ratio.

Dividends

RFG vs. IDMO - Dividend Comparison

RFG's dividend yield for the trailing twelve months is around 0.15%, less than IDMO's 3.69% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IDMO Invesco S&P International Developed Momentum ETF	3.69%	3.71%	2.24%	2.89%	3.66%	1.81%	1.63%	2.78%	3.27%	3.08%	2.18%	2.52%
RFG Invesco S&P MidCap 400® Pure Growth ETF	0.15%	0.43%	0.38%	0.99%	0.78%	0.05%	0.27%	0.64%	0.76%	0.66%	0.35%	0.61%

Frequently Asked Questions

Can I hold both RFG and IDMO in my portfolio?

RFG and IDMO have a correlation of 0.67, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RFG or IDMO?

IDMO has higher volatility (5.93%) compared to RFG (5.32%). In terms of maximum drawdown, RFG dropped -51.93% vs IDMO's -39.38%.

Which ETF is better, RFG or IDMO?

On 10-year performance, IDMO leads with 12.47% vs 9.62% for RFG. On fees, IDMO is cheaper at 0.25% per year. On volatility, RFG has been the lower-risk option at 5.32%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, RFG or IDMO?

Over the 10-year period, IDMO has performed better with a 12.47% return vs 9.62%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, RFG or IDMO?

IDMO is cheaper with a 0.25% expense ratio, compared with 0.35% for RFG.

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

IDMO has the higher dividend yield at 3.69%, compared with 0.15% for RFG.

What is the main difference between RFG and IDMO?

RFG is categorized as Small Cap Growth Equities, while IDMO is Momentum. RFG tracks S&P Mid Cap 400 Pure Growth, while IDMO tracks S&P Momentum Developed ex U.S. & South Korea LargeMidCap Index. Their fees differ too: 0.35% for RFG and 0.25% for IDMO.

Which has better risk-adjusted returns?

IDMO currently has the higher Sharpe Ratio (1.18 vs 1.14), 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.