AAAC vs. RESM

Last updated Jul 17, 2026

AAAC (Columbia AAA CLO ETF) and RESM (Columbia Research Enhanced Small Cap ETF) are both exchange-traded funds - AAAC is a CLO fund actively managed by Columbia Threadneedle, while RESM is a Small Cap Blend Equities fund tracking the Beta Advantage Research Enhanced Small Cap Index. AAAC is actively managed, while RESM is passively managed. At a 0.17 correlation, their price movements are largely independent. AAAC charges 0.20%/yr vs 0.32%/yr for RESM.

Performance

AAAC vs. RESM - Performance Comparison

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

Returns By Period

In the year-to-date period, AAAC achieves a 2.69% return, which is significantly lower than RESM's 21.93% return.

AAAC

• 1D: 0.00%
• 1M: 0.46%
• 6M: 2.48%
• YTD: 2.69%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

RESM

• 1D: 0.23%
• 1M: 3.11%
• 6M: 15.03%
• YTD: 21.93%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

AAAC vs. RESM - Yearly Performance Comparison

	2026 (YTD)	2025
AAAC Columbia AAA CLO ETF	2.69%	0.15%
RESM Columbia Research Enhanced Small Cap ETF	21.93%	-3.32%

Correlation

The correlation between AAAC and RESM is 0.17, 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	0.17

Return for Risk

AAAC vs. RESM - Risk-Adjusted Trends Comparison

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

AAAC vs. RESM - Drawdown Comparison

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

Drawdown Indicators

	AAAC	RESM	Difference
Max Drawdown Largest peak-to-trough decline	-0.55%	-8.50%	+7.95%
Current Drawdown Current decline from peak	0.00%	-0.74%	+0.74%
Average Drawdown Average peak-to-trough decline	-0.04%	-1.73%	+1.69%

Volatility

Volatility by Period

	AAAC	RESM	Difference
Volatility (1Y) Calculated over the trailing 1-year period	0.85%	17.01%	-16.16%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.85%	17.01%	-16.16%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.85%	17.01%	-16.16%

AAAC vs. RESM - Expense Ratio Comparison

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

Dividends

AAAC vs. RESM - Dividend Comparison

AAAC's dividend yield for the trailing twelve months is around 2.65%, more than RESM's 0.08% yield.

Position	TTM	2025
AAAC Columbia AAA CLO ETF	2.65%	0.03%
RESM Columbia Research Enhanced Small Cap ETF	0.08%	0.09%

Frequently Asked Questions

Can I hold both AAAC and RESM in my portfolio?

AAAC and RESM have a correlation of 0.17, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, AAAC or RESM?

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, AAAC or RESM?

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

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

AAAC has the higher dividend yield at 2.65%, compared with 0.08% for RESM.

What is the main difference between AAAC and RESM?

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