OPTZ vs. CGMM

Last updated Aug 2, 2026

OPTZ (Optimize Strategy Index ETF) and CGMM (Capital Group U.S. Small and Mid Cap ETF) are both Mid Cap Blend Equities funds. OPTZ is passively managed, while CGMM is actively managed. Over the past year, OPTZ returned 43.75% vs 18.91% for CGMM. Their correlation of 0.85 means they have usually moved in the same direction. OPTZ charges 0.25%/yr vs 0.51%/yr for CGMM.

Performance

OPTZ vs. CGMM - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Optimize Strategy Index ETF (OPTZ) and Capital Group U.S. Small and Mid Cap ETF (CGMM). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, OPTZ achieves a 24.46% return, which is significantly higher than CGMM's 10.85% return.

OPTZ

• 1D: -0.11%
• 1M: -3.89%
• 6M: 20.35%
• YTD: 24.46%
• 1Y: 43.75%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 28.91%

CGMM

• 1D: -0.68%
• 1M: -2.41%
• 6M: 6.78%
• YTD: 10.85%
• 1Y: 18.91%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 15.22%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
CGMM Capital Group U.S. Small and Mid Cap ETF	$22.37M	$23.07M	$30.55M
OPTZ Optimize Strategy Index ETF	$154.33K	$341.82K	$247.38K

OPTZ vs. CGMM - Yearly Performance Comparison

	2026 (YTD)	2025
OPTZ Optimize Strategy Index ETF	24.46%	20.98%
CGMM Capital Group U.S. Small and Mid Cap ETF	10.85%	12.15%

Correlation

The correlation between OPTZ and CGMM is 0.83, meaning they have usually moved in the same direction, including during past declines.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.83
Correlation (All Time) Calculated using the full available price history since Jan 16, 2025	0.85

The correlation between OPTZ and CGMM has been stable across timeframes, ranging from 0.83 to 0.85 - a consistent structural relationship.

OPTZ vs. CGMM - Sectors Allocation Comparison

Sectors	OPTZ	CGMM
Technology	56.6%	18.7%
Healthcare	9.7%	11.7%
Consumer Cyclical	8.1%	12.7%
Industrials	7.9%	21.7%
Financial Services	7.8%	16.2%
Consumer Defensive	3.6%	5.3%
Communication Services	2.4%	2.4%
Real Estate	1.3%	2.6%
Energy	1.2%	2.7%
Basic Materials	1.0%	3.0%
Utilities	0.6%	3.0%

Return for Risk

OPTZ vs. CGMM — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

OPTZ

OPTZ Risk / Return Rank: 81
OPTZ Sharpe Ratio Rank: 82
OPTZ Sortino Ratio Rank: 79
OPTZ Omega Ratio Rank: 77
OPTZ Calmar Ratio Rank: 83
OPTZ Martin Ratio Rank: 85

CGMM

CGMM Risk / Return Rank: 44
CGMM Sharpe Ratio Rank: 41
CGMM Sortino Ratio Rank: 42
CGMM Omega Ratio Rank: 38
CGMM Calmar Ratio Rank: 45
CGMM Martin Ratio Rank: 53

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

OPTZ vs. CGMM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Optimize Strategy Index ETF (OPTZ) and Capital Group U.S. Small and Mid Cap ETF (CGMM). 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.

	OPTZ	CGMM	Difference
Sharpe ratio: Return per unit of total volatility	1.88	1.03	+0.86
Sortino ratio: Return per unit of downside risk	2.56	1.57	+1.00
Omega ratio: Gain probability vs. loss probability	1.32	1.18	+0.14
Calmar ratio: Return relative to maximum drawdown	3.09	1.63	+1.45
Martin ratio: Return relative to average drawdown	12.07	6.14	+5.93

OPTZ vs. CGMM - Sharpe Ratio Comparison

The current OPTZ Sharpe Ratio is 1.88, which is higher than the CGMM Sharpe Ratio of 1.03. The chart below compares the historical Sharpe Ratios of OPTZ and CGMM, 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

OPTZ vs. CGMM - Drawdown Comparison

The maximum OPTZ drawdown since its inception was -25.75%, which is greater than CGMM's maximum drawdown of -21.04%. Use the drawdown chart below to compare losses from any high point for OPTZ and CGMM.

Drawdown Indicators

	OPTZ	CGMM	Difference
Max Drawdown Largest peak-to-trough decline	-25.75%	-21.04%	-4.71%
Max Drawdown (1Y) Largest decline over 1 year	-13.39%	-10.09%	-3.30%
Current Drawdown Current decline from peak	-9.85%	-3.15%	-6.70%
Average Drawdown Average peak-to-trough decline	-3.51%	-3.08%	-0.43%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.42%	2.69%	+0.73%

Volatility

OPTZ vs. CGMM - Volatility Comparison

Optimize Strategy Index ETF (OPTZ) has a higher volatility of 8.76% compared to Capital Group U.S. Small and Mid Cap ETF (CGMM) at 3.60%. This indicates that OPTZ's price experiences larger fluctuations and is considered to be riskier than CGMM based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	OPTZ	CGMM	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.76%	3.60%	+5.16%
Volatility (6M) Calculated over the trailing 6-month period	18.77%	11.97%	+6.80%
Volatility (1Y) Calculated over the trailing 1-year period	21.97%	16.13%	+5.84%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.88%	19.76%	+2.12%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.88%	19.76%	+2.12%

OPTZ vs. CGMM - Expense Ratio Comparison

OPTZ has a 0.25% expense ratio, which is lower than CGMM's 0.51% expense ratio.

Dividends

OPTZ vs. CGMM - Dividend Comparison

OPTZ's dividend yield for the trailing twelve months is around 0.47%, more than CGMM's 0.38% yield.

Position	TTM	2025	2024
CGMM Capital Group U.S. Small and Mid Cap ETF	0.38%	0.40%	0.00%
OPTZ Optimize Strategy Index ETF	0.47%	0.58%	0.32%

Frequently Asked Questions

Can I hold both OPTZ and CGMM in my portfolio?

OPTZ and CGMM have a correlation of 0.83, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, OPTZ or CGMM?

OPTZ has higher volatility (8.76%) compared to CGMM (3.60%). In terms of maximum drawdown, OPTZ dropped -25.75% vs CGMM's -21.04%.

Which ETF is better, OPTZ or CGMM?

On 1-year performance, OPTZ leads with 43.75% vs 18.91% for CGMM. On fees, OPTZ is cheaper at 0.25% per year. On volatility, CGMM has been the lower-risk option at 3.60%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, OPTZ or CGMM?

Over the 1-year period, OPTZ has performed better with a 43.75% return vs 18.91%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, OPTZ or CGMM?

OPTZ is cheaper with a 0.25% expense ratio, compared with 0.51% for CGMM.

Which ETF pays a higher dividend yield, OPTZ or CGMM?

OPTZ has the higher dividend yield at 0.47%, compared with 0.38% for CGMM.

What is the main difference between OPTZ and CGMM?

They also come from different issuers: Optimize and Capital Group. Their fees differ too: 0.25% for OPTZ and 0.51% for CGMM.

Which has better risk-adjusted returns?

OPTZ currently has the higher Sharpe Ratio (1.88 vs 1.03), 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.