RESM vs. AAAC

Last updated Jul 4, 2026

RESM (Columbia Research Enhanced Small Cap ETF) and AAAC (Columbia AAA CLO ETF) are both exchange-traded funds - RESM is a Small Cap Blend Equities fund tracking the Beta Advantage Research Enhanced Small Cap Index, while AAAC is a CLO fund actively managed by Columbia Threadneedle. RESM is passively managed, while AAAC is actively managed. At a 0.18 correlation, their price movements are largely independent. RESM charges 0.32%/yr vs 0.20%/yr for AAAC.

Performance

RESM vs. AAAC - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Columbia Research Enhanced Small Cap ETF (RESM) and Columbia AAA CLO ETF (AAAC). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RESM achieves a 21.67% return, which is significantly higher than AAAC's 2.46% return.

RESM

• 1D: -0.58%
• 1M: 5.32%
• 6M: 21.06%
• YTD: 21.67%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

AAAC

• 1D: 0.02%
• 1M: 0.38%
• 6M: 2.40%
• YTD: 2.46%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

RESM vs. AAAC - Yearly Performance Comparison

	2026 (YTD)	2025
RESM Columbia Research Enhanced Small Cap ETF	21.67%	-3.32%
AAAC Columbia AAA CLO ETF	2.46%	0.15%

Correlation

The correlation between RESM and AAAC is 0.18, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (All Time) Calculated using the full available price history since Dec 11, 2025	0.18

Return for Risk

RESM vs. AAAC - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Columbia Research Enhanced Small Cap ETF (RESM) and Columbia AAA CLO ETF (AAAC). 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.

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

Drawdowns

RESM vs. AAAC - Drawdown Comparison

The maximum RESM drawdown since its inception was -8.50%, which is greater than AAAC's maximum drawdown of -0.55%. Use the drawdown chart below to compare losses from any high point for RESM and AAAC.

Drawdown Indicators

	RESM	AAAC	Difference
Max Drawdown Largest peak-to-trough decline	-8.50%	-0.55%	-7.95%
Current Drawdown Current decline from peak	-0.95%	-0.02%	-0.93%
Average Drawdown Average peak-to-trough decline	-1.77%	-0.04%	-1.73%

Volatility

Volatility by Period

	RESM	AAAC	Difference
Volatility (1Y) Calculated over the trailing 1-year period	17.36%	0.86%	+16.50%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.36%	0.86%	+16.50%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.36%	0.86%	+16.50%

RESM vs. AAAC - Expense Ratio Comparison

RESM has a 0.32% expense ratio, which is higher than AAAC's 0.20% expense ratio.

Dividends

RESM vs. AAAC - Dividend Comparison

RESM's dividend yield for the trailing twelve months is around 0.08%, less than AAAC's 2.66% yield.

Position	TTM	2025
AAAC Columbia AAA CLO ETF	2.66%	0.03%
RESM Columbia Research Enhanced Small Cap ETF	0.08%	0.09%

Frequently Asked Questions

Can I hold both RESM and AAAC in my portfolio?

RESM and AAAC have a correlation of 0.18, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, RESM or AAAC?

On fees, AAAC is cheaper at 0.20% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, RESM or AAAC?

AAAC is cheaper with a 0.20% expense ratio, compared with 0.32% for RESM.

Which ETF pays a higher dividend yield, RESM or AAAC?

AAAC has the higher dividend yield at 2.66%, compared with 0.08% for RESM.

What is the main difference between RESM and AAAC?

RESM is categorized as Small Cap Blend Equities, while AAAC is CLO. Their fees differ too: 0.32% for RESM and 0.20% for AAAC.