IDMO vs. FESM

Last updated Jun 14, 2026

IDMO (Invesco S&P International Developed Momentum ETF) and FESM (Fidelity Enhanced Small Cap 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 FESM is a Small Cap Blend Equities fund actively managed by Fidelity. IDMO is passively managed, while FESM is actively managed. Over the past year, IDMO returned 24.72% vs 51.99% for FESM. A 0.64 correlation means they provide meaningful diversification when combined. IDMO charges 0.25%/yr vs 0.28%/yr for FESM.

Performance

IDMO vs. FESM - Performance Comparison

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

Returns By Period

In the year-to-date period, IDMO achieves a 8.17% return, which is significantly lower than FESM's 22.93% return.

IDMO

• 1D: 1.36%
• 1M: 1.48%
• YTD: 8.17%
• 6M: 10.09%
• 1Y: 24.72%
• 3Y*: 25.21%
• 5Y*: 15.50%
• 10Y*: 12.64%

FESM

• 1D: 1.00%
• 1M: 6.63%
• YTD: 22.93%
• 6M: 20.18%
• 1Y: 51.99%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

IDMO vs. FESM - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023
IDMO Invesco S&P International Developed Momentum ETF	8.17%	42.17%	12.79%	5.37%
FESM Fidelity Enhanced Small Cap ETF	22.93%	17.88%	16.22%	12.09%

Correlation

The correlation between IDMO and FESM is 0.69, 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	0.69
Correlation (All Time) Calculated using the full available price history since Nov 20, 2023	0.64

The correlation between IDMO and FESM has been stable across timeframes, ranging from 0.64 to 0.69 - a consistent structural relationship.

IDMO vs. FESM - Sectors Allocation Comparison

Sectors	IDMO	FESM
Financial Services	43.2%	14.6%
Industrials	21.3%	18.5%
Basic Materials	10.6%	4.0%
Utilities	7.9%	1.8%
Technology	6.2%	23.3%
Consumer Defensive	2.5%	1.1%
Communication Services	2.1%	3.1%
Real Estate	1.8%	3.9%
Energy	1.7%	5.9%
Consumer Cyclical	1.5%	7.7%
Healthcare	1.1%	16.1%

Return for Risk

IDMO vs. FESM — Risk / Return Rank

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

IDMO

IDMO Risk / Return Rank: 44
IDMO Sharpe Ratio Rank: 42
IDMO Sortino Ratio Rank: 43
IDMO Omega Ratio Rank: 42
IDMO Calmar Ratio Rank: 43
IDMO Martin Ratio Rank: 51

FESM

FESM Risk / Return Rank: 87
FESM Sharpe Ratio Rank: 88
FESM Sortino Ratio Rank: 86
FESM Omega Ratio Rank: 81
FESM Calmar Ratio Rank: 90
FESM Martin Ratio Rank: 89

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. FESM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Invesco S&P International Developed Momentum ETF (IDMO) and Fidelity Enhanced Small Cap ETF (FESM). 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.

	IDMO	FESM	Difference
Sharpe ratio: Return per unit of total volatility	1.30	2.53	-1.24
Sortino ratio: Return per unit of downside risk	1.93	3.37	-1.44
Omega ratio: Gain probability vs. loss probability	1.24	1.41	-0.17
Calmar ratio: Return relative to maximum drawdown	1.89	4.85	-2.96
Martin ratio: Return relative to average drawdown	7.64	17.47	-9.83

IDMO vs. FESM - Sharpe Ratio Comparison

The current IDMO Sharpe Ratio is 1.30, which is lower than the FESM Sharpe Ratio of 2.53. The chart below compares the historical Sharpe Ratios of IDMO and FESM, 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

IDMO vs. FESM - Drawdown Comparison

The maximum IDMO drawdown since its inception was -39.38%, which is greater than FESM's maximum drawdown of -26.93%. Use the drawdown chart below to compare losses from any high point for IDMO and FESM.

Drawdown Indicators

	IDMO	FESM	Difference
Max Drawdown Largest peak-to-trough decline	-39.38%	-26.93%	-12.45%
Max Drawdown (1Y) Largest decline over 1 year	-12.31%	-10.18%	-2.13%
Max Drawdown (3Y) Largest decline over 3 years	-12.65%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-27.07%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-31.34%	—	—
Current Drawdown Current decline from peak	-1.92%	0.00%	-1.92%
Average Drawdown Average peak-to-trough decline	-9.74%	-4.75%	-4.99%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.04%	2.83%	+0.21%

Volatility

IDMO vs. FESM - Volatility Comparison

Invesco S&P International Developed Momentum ETF (IDMO) has a higher volatility of 7.92% compared to Fidelity Enhanced Small Cap ETF (FESM) at 6.80%. This indicates that IDMO's price experiences larger fluctuations and is considered to be riskier than FESM based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IDMO	FESM	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.92%	6.80%	+1.12%
Volatility (6M) Calculated over the trailing 6-month period	16.02%	14.05%	+1.97%
Volatility (1Y) Calculated over the trailing 1-year period	17.92%	19.50%	-1.58%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.03%	21.35%	-3.32%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.18%	21.35%	-3.17%

IDMO vs. FESM - Expense Ratio Comparison

IDMO has a 0.25% expense ratio, which is lower than FESM's 0.28% expense ratio.

Dividends

IDMO vs. FESM - Dividend Comparison

IDMO's dividend yield for the trailing twelve months is around 3.52%, more than FESM's 0.52% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FESM Fidelity Enhanced Small Cap ETF	0.52%	0.82%	1.08%	0.06%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
IDMO Invesco S&P International Developed Momentum ETF	3.52%	3.71%	2.24%	2.89%	3.66%	1.81%	1.63%	2.78%	3.27%	3.08%	2.18%	2.52%

Frequently Asked Questions

Can I hold both IDMO and FESM in my portfolio?

IDMO and FESM have a correlation of 0.69, 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 FESM?

IDMO has higher volatility (7.92%) compared to FESM (6.80%). In terms of maximum drawdown, IDMO dropped -39.38% vs FESM's -26.93%.

Which ETF is better, IDMO or FESM?

On 1-year performance, FESM leads with 51.99% vs 24.72% for IDMO. On fees, IDMO is cheaper at 0.25% per year. On volatility, FESM has been the lower-risk option at 6.80%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, IDMO or FESM?

Over the 1-year period, FESM has performed better with a 51.99% return vs 24.72%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, IDMO or FESM?

IDMO is cheaper with a 0.25% expense ratio, compared with 0.28% for FESM.

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

IDMO has the higher dividend yield at 3.52%, compared with 0.52% for FESM.

What is the main difference between IDMO and FESM?

IDMO is categorized as Momentum, while FESM is Small Cap Blend Equities. They also come from different issuers: Invesco and Fidelity. Their fees differ too: 0.25% for IDMO and 0.28% for FESM.

Which has better risk-adjusted returns?

FESM currently has the higher Sharpe Ratio (2.53 vs 1.30), 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.