COSSX vs. IDMO

Last updated Jun 23, 2026

COSSX (Columbia Overseas Value Fund Institutional 2 Class) and IDMO (Invesco S&P International Developed Momentum ETF) are both funds - COSSX is a Foreign Large Cap Equities fund actively managed by Columbia, while IDMO is a Momentum fund tracking the S&P Momentum Developed ex U.S. & South Korea LargeMidCap Index. COSSX is actively managed, while IDMO is passively managed. Over the past 10 years, COSSX returned 10.36%/yr vs 13.82%/yr for IDMO. A 0.68 correlation means they provide meaningful diversification when combined. COSSX charges 0.82%/yr vs 0.25%/yr for IDMO.

Performance

COSSX vs. IDMO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Columbia Overseas Value Fund Institutional 2 Class (COSSX) 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, COSSX achieves a 6.17% return, which is significantly lower than IDMO's 12.70% return. Over the past 10 years, COSSX has underperformed IDMO with an annualized return of 10.36%, while IDMO has yielded a comparatively higher 13.82% annualized return.

COSSX

• 1D: -0.07%
• 1M: -1.32%
• YTD: 6.17%
• 6M: 6.09%
• 1Y: 26.47%
• 3Y*: 20.16%
• 5Y*: 12.24%
• 10Y*: 10.36%

IDMO

• 1D: 1.34%
• 1M: 4.29%
• YTD: 12.70%
• 6M: 12.58%
• 1Y: 30.52%
• 3Y*: 27.60%
• 5Y*: 16.54%
• 10Y*: 13.82%

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

COSSX vs. IDMO - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
COSSX Columbia Overseas Value Fund Institutional 2 Class	6.17%	45.91%	4.82%	16.13%	-5.96%	10.94%	0.02%	22.51%	-16.69%	27.83%
IDMO Invesco S&P International Developed Momentum ETF	12.70%	42.17%	12.79%	20.16%	-12.03%	14.31%	22.01%	26.09%	-16.66%	29.21%

Correlation

The correlation between COSSX and IDMO is 0.84, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.84
Correlation (3Y) Calculated over the trailing 3-year period	0.83
Correlation (5Y) Calculated over the trailing 5-year period	0.86
Correlation (10Y) Calculated over the trailing 10-year period	0.70
Correlation (All Time) Calculated using the full available price history since Jan 4, 2016	0.68

The correlation between COSSX and IDMO shifts across timeframes, from 0.68 (all time) to 0.86 (5 years), reflecting how their relationship changes across market environments.

Return for Risk

COSSX vs. IDMO — Risk / Return Rank

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

COSSX

COSSX Risk / Return Rank: 42
COSSX Sharpe Ratio Rank: 48
COSSX Sortino Ratio Rank: 45
COSSX Omega Ratio Rank: 46
COSSX Calmar Ratio Rank: 38
COSSX Martin Ratio Rank: 35

IDMO

IDMO Risk / Return Rank: 53
IDMO Sharpe Ratio Rank: 52
IDMO Sortino Ratio Rank: 52
IDMO Omega Ratio Rank: 52
IDMO Calmar Ratio Rank: 52
IDMO Martin Ratio Rank: 59

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.

COSSX vs. IDMO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Columbia Overseas Value Fund Institutional 2 Class (COSSX) 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.

	COSSX	IDMO	Difference
Sharpe ratio: Return per unit of total volatility	1.88	1.71	+0.16
Sortino ratio: Return per unit of downside risk	2.61	2.46	+0.15
Omega ratio: Gain probability vs. loss probability	1.34	1.32	+0.03
Calmar ratio: Return relative to maximum drawdown	2.22	2.49	-0.27
Martin ratio: Return relative to average drawdown	7.31	10.10	-2.79

COSSX vs. IDMO - Sharpe Ratio Comparison

The current COSSX Sharpe Ratio is 1.88, which is comparable to the IDMO Sharpe Ratio of 1.71. The chart below compares the historical Sharpe Ratios of COSSX 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

COSSX vs. IDMO - Drawdown Comparison

The maximum COSSX drawdown since its inception was -43.24%, which is greater than IDMO's maximum drawdown of -39.38%. Use the drawdown chart below to compare losses from any high point for COSSX and IDMO.

Drawdown Indicators

	COSSX	IDMO	Difference
Max Drawdown Largest peak-to-trough decline	-43.24%	-39.38%	-3.86%
Max Drawdown (1Y) Largest decline over 1 year	-11.78%	-12.31%	+0.53%
Max Drawdown (3Y) Largest decline over 3 years	-13.34%	-12.65%	-0.69%
Max Drawdown (5Y) Largest decline over 5 years	-25.76%	-27.07%	+1.31%
Max Drawdown (10Y) Largest decline over 10 years	-43.24%	-31.34%	-11.90%
Current Drawdown Current decline from peak	-5.67%	0.00%	-5.67%
Average Drawdown Average peak-to-trough decline	-7.12%	-9.73%	+2.61%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.58%	3.03%	+0.55%

Volatility

COSSX vs. IDMO - Volatility Comparison

The current volatility for Columbia Overseas Value Fund Institutional 2 Class (COSSX) is 4.16%, while Invesco S&P International Developed Momentum ETF (IDMO) has a volatility of 7.29%. This indicates that COSSX 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

	COSSX	IDMO	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.16%	7.29%	-3.13%
Volatility (6M) Calculated over the trailing 6-month period	11.34%	16.13%	-4.79%
Volatility (1Y) Calculated over the trailing 1-year period	13.97%	17.95%	-3.98%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.83%	18.06%	-2.23%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.39%	18.19%	-0.80%

COSSX vs. IDMO - Expense Ratio Comparison

COSSX has a 0.82% expense ratio, which is higher than IDMO's 0.25% expense ratio.

Dividends

COSSX vs. IDMO - Dividend Comparison

COSSX's dividend yield for the trailing twelve months is around 7.57%, more than IDMO's 4.24% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
COSSX Columbia Overseas Value Fund Institutional 2 Class	7.57%	8.03%	5.51%	4.07%	1.96%	3.70%	1.78%	3.95%	3.72%	1.72%	2.18%	0.00%
IDMO Invesco S&P International Developed Momentum ETF	4.24%	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 COSSX and IDMO in my portfolio?

COSSX and IDMO have a correlation of 0.84, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, COSSX or IDMO?

IDMO has higher volatility (7.29%) compared to COSSX (4.16%). In terms of maximum drawdown, COSSX dropped -43.24% vs IDMO's -39.38%.

Which has better risk-adjusted returns?

COSSX currently has the higher Sharpe Ratio (1.88 vs 1.71), 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.