RESM vs. RB

Last updated Jul 4, 2026

RESM (Columbia Research Enhanced Small Cap ETF) and RB (ProShares Russell 2000 Dynamic Daily Buffer ETF) are both exchange-traded funds - RESM is a Small Cap Blend Equities fund tracking the Beta Advantage Research Enhanced Small Cap Index, while RB is a Defined Outcome fund tracking the Russell 2000. Both are passively managed. A 0.72 correlation means they provide meaningful diversification when combined. RESM charges 0.32%/yr vs 0.58%/yr for RB.

Performance

RESM vs. RB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Columbia Research Enhanced Small Cap ETF (RESM) and ProShares Russell 2000 Dynamic Daily Buffer ETF (RB). 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 RB's 7.48% return.

RESM

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

RB

• 1D: 0.08%
• 1M: 0.68%
• 6M: 7.25%
• YTD: 7.48%
• 1Y: 17.99%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

RESM vs. RB - Yearly Performance Comparison

	2026 (YTD)	2025
RESM Columbia Research Enhanced Small Cap ETF	21.67%	-3.32%
RB ProShares Russell 2000 Dynamic Daily Buffer ETF	7.48%	0.77%

Correlation

The correlation between RESM and RB is 0.72, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (All Time) Calculated using the full available price history since Dec 11, 2025	0.72

Return for Risk

RESM vs. RB — Risk / Return Rank

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

RESM

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

RB

RB Risk / Return Rank: 96
RB Sharpe Ratio Rank: 94
RB Sortino Ratio Rank: 96
RB Omega Ratio Rank: 95
RB Calmar Ratio Rank: 97
RB Martin Ratio Rank: 96

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.

RESM vs. RB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Columbia Research Enhanced Small Cap ETF (RESM) and ProShares Russell 2000 Dynamic Daily Buffer ETF (RB). 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.

	RESM	RB	Difference
Sharpe ratio: Return per unit of total volatility	—	2.84	—
Sortino ratio: Return per unit of downside risk	—	4.80	—
Omega ratio: Gain probability vs. loss probability	—	1.62	—
Calmar ratio: Return relative to maximum drawdown	—	8.90	—
Martin ratio: Return relative to average drawdown	—	28.95	—

Drawdowns

RESM vs. RB - Drawdown Comparison

The maximum RESM drawdown since its inception was -8.50%, which is greater than RB's maximum drawdown of -2.09%. Use the drawdown chart below to compare losses from any high point for RESM and RB.

Drawdown Indicators

	RESM	RB	Difference
Max Drawdown Largest peak-to-trough decline	-8.50%	-2.09%	-6.41%
Max Drawdown (1Y) Largest decline over 1 year	—	-2.09%	—
Current Drawdown Current decline from peak	-0.95%	-0.92%	-0.03%
Average Drawdown Average peak-to-trough decline	-1.77%	-0.44%	-1.33%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.64%	—

Volatility

Volatility by Period

	RESM	RB	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	2.78%	—
Volatility (6M) Calculated over the trailing 6-month period	—	4.81%	—
Volatility (1Y) Calculated over the trailing 1-year period	17.36%	6.57%	+10.79%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.36%	6.53%	+10.83%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.36%	6.53%	+10.83%

RESM vs. RB - Expense Ratio Comparison

RESM has a 0.32% expense ratio, which is lower than RB's 0.58% expense ratio.

Dividends

RESM vs. RB - Dividend Comparison

RESM's dividend yield for the trailing twelve months is around 0.08%, less than RB's 2.28% yield.

Position	TTM	2025
RB ProShares Russell 2000 Dynamic Daily Buffer ETF	2.28%	1.78%
RESM Columbia Research Enhanced Small Cap ETF	0.08%	0.09%

Frequently Asked Questions

Can I hold both RESM and RB in my portfolio?

RESM and RB have a correlation of 0.72, 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 RB?

On fees, RESM is cheaper at 0.32% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, RESM or RB?

RESM is cheaper with a 0.32% expense ratio, compared with 0.58% for RB.

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

RB has the higher dividend yield at 2.28%, compared with 0.08% for RESM.

What is the main difference between RESM and RB?

RESM is categorized as Small Cap Blend Equities, while RB is Defined Outcome. RESM tracks Beta Advantage Research Enhanced Small Cap Index, while RB tracks Russell 2000. They also come from different issuers: Columbia Threadneedle and ProShares. Their fees differ too: 0.32% for RESM and 0.58% for RB.