AIMS vs. RB

Last updated Jul 4, 2026

AIMS (Acuitas Small Cap Active ETF) and RB (ProShares Russell 2000 Dynamic Daily Buffer ETF) are both exchange-traded funds - AIMS is a Small Cap Blend Equities fund actively managed by Acuitas Investments, while RB is a Defined Outcome fund tracking the Russell 2000. AIMS is actively managed, while RB is passively managed. A 0.70 correlation means they provide meaningful diversification when combined. AIMS charges 0.75%/yr vs 0.58%/yr for RB.

Performance

AIMS vs. RB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Acuitas Small Cap Active ETF (AIMS) and ProShares Russell 2000 Dynamic Daily Buffer ETF (RB). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

AIMS

• 1D: -1.92%
• 1M: 6.75%
• 6M: —
• YTD: —
• 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)

AIMS vs. RB - Yearly Performance Comparison

	2026 (YTD)
AIMS Acuitas Small Cap Active ETF	13.60%
RB ProShares Russell 2000 Dynamic Daily Buffer ETF	4.33%

Correlation

The correlation between AIMS and RB is 0.70, 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 Feb 10, 2026	0.70

Return for Risk

AIMS vs. RB — Risk / Return Rank

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

AIMS

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.

AIMS vs. RB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Acuitas Small Cap Active ETF (AIMS) 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.

	AIMS	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

AIMS vs. RB - Drawdown Comparison

The maximum AIMS drawdown since its inception was -9.18%, which is greater than RB's maximum drawdown of -2.09%. Use the drawdown chart below to compare losses from any high point for AIMS and RB.

Drawdown Indicators

	AIMS	RB	Difference
Max Drawdown Largest peak-to-trough decline	-9.18%	-2.09%	-7.09%
Max Drawdown (1Y) Largest decline over 1 year	—	-2.09%	—
Current Drawdown Current decline from peak	-2.13%	-0.92%	-1.21%
Average Drawdown Average peak-to-trough decline	-2.32%	-0.44%	-1.88%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.64%	—

Volatility

Volatility by Period

	AIMS	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	20.01%	6.57%	+13.44%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	20.01%	6.53%	+13.48%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.01%	6.53%	+13.48%

AIMS vs. RB - Expense Ratio Comparison

AIMS has a 0.75% expense ratio, which is higher than RB's 0.58% expense ratio.

Dividends

AIMS vs. RB - Dividend Comparison

AIMS has not paid dividends to shareholders, while RB's dividend yield for the trailing twelve months is around 2.28%.

Position	TTM	2025
AIMS Acuitas Small Cap Active ETF	0.00%	0.00%
RB ProShares Russell 2000 Dynamic Daily Buffer ETF	2.28%	1.78%

Frequently Asked Questions

Can I hold both AIMS and RB in my portfolio?

AIMS and RB have a correlation of 0.70, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, AIMS or RB?

On fees, RB is cheaper at 0.58% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, AIMS or RB?

RB is cheaper with a 0.58% expense ratio, compared with 0.75% for AIMS.

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

RB has the higher dividend yield at 2.28%, compared with 0.00% for AIMS.

What is the main difference between AIMS and RB?

AIMS is categorized as Small Cap Blend Equities, while RB is Defined Outcome. They also come from different issuers: Acuitas Investments and ProShares. Their fees differ too: 0.75% for AIMS and 0.58% for RB.