RONB vs. BAMU

Last updated Jun 4, 2026

RONB (Baron First Principles ETF) and BAMU (Brookstone Ultra-Short Bond ETF) are both exchange-traded funds - RONB is a Large Cap Growth Equities fund actively managed by Baron Capital, while BAMU is a Ultrashort Bond fund actively managed by Brookstone. Both are actively managed. At a correlation of -0.18, they often move in opposite directions. RONB charges 1.00%/yr vs 1.09%/yr for BAMU.

Performance

RONB vs. BAMU - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Baron First Principles ETF (RONB) and Brookstone Ultra-Short Bond ETF (BAMU). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RONB achieves a -3.75% return, which is significantly lower than BAMU's 1.06% return.

RONB

• 1D: -1.11%
• 1M: 4.33%
• YTD: -3.75%
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

BAMU

• 1D: 0.02%
• 1M: 0.20%
• YTD: 1.06%
• 6M: 1.25%
• 1Y: 2.93%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

RONB vs. BAMU - Yearly Performance Comparison

	2026 (YTD)	2025
RONB Baron First Principles ETF	-3.75%	-0.33%
BAMU Brookstone Ultra-Short Bond ETF	1.06%	0.10%

Correlation

The correlation between RONB and BAMU is -0.18, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.

	Correlation
Correlation (All Time) Calculated using the full available price history since Dec 16, 2025	-0.18

Return for Risk

RONB vs. BAMU — Risk / Return Rank

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

BAMU

BAMU Risk / Return Rank: 98
BAMU Sharpe Ratio Rank: 97
BAMU Sortino Ratio Rank: 98
BAMU Omega Ratio Rank: 98
BAMU Calmar Ratio Rank: 99
BAMU Martin Ratio Rank: 99

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.

RONB vs. BAMU - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Baron First Principles ETF (RONB) and Brookstone Ultra-Short Bond ETF (BAMU). 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.

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

Sharpe Ratios by Period

	RONB	BAMU	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	4.98	—
Sharpe Ratio (All Time) Calculated using the full available price history	-0.51	4.14	-4.66

Drawdowns

RONB vs. BAMU - Drawdown Comparison

The maximum RONB drawdown since its inception was -13.08%, which is greater than BAMU's maximum drawdown of -0.36%. Use the drawdown chart below to compare losses from any high point for RONB and BAMU.

Drawdown Indicators

	RONB	BAMU	Difference
Max Drawdown Largest peak-to-trough decline	-13.08%	-0.36%	-12.72%
Max Drawdown (1Y) Largest decline over 1 year	—	-0.12%	—
Current Drawdown Current decline from peak	-5.80%	0.00%	-5.80%
Average Drawdown Average peak-to-trough decline	-6.33%	-0.02%	-6.31%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.03%	—

Volatility

Volatility by Period

	RONB	BAMU	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.07%	—
Volatility (6M) Calculated over the trailing 6-month period	—	0.43%	—
Volatility (1Y) Calculated over the trailing 1-year period	16.85%	0.59%	+16.26%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.85%	0.87%	+15.98%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.85%	0.87%	+15.98%

RONB vs. BAMU - Expense Ratio Comparison

RONB has a 1.00% expense ratio, which is lower than BAMU's 1.09% expense ratio.

Dividends

RONB vs. BAMU - Dividend Comparison

RONB has not paid dividends to shareholders, while BAMU's dividend yield for the trailing twelve months is around 3.06%.

Position	TTM	2025	2024	2023
BAMU Brookstone Ultra-Short Bond ETF	3.06%	3.20%	3.97%	0.84%
RONB Baron First Principles ETF	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both RONB and BAMU in my portfolio?

RONB and BAMU 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, RONB or BAMU?

On fees, RONB is cheaper at 1.00% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, RONB or BAMU?

RONB is cheaper with a 1.00% expense ratio, compared with 1.09% for BAMU.

Which ETF pays a higher dividend yield, RONB or BAMU?

BAMU has the higher dividend yield at 3.06%, compared with 0.00% for RONB.

What is the main difference between RONB and BAMU?

RONB is categorized as Large Cap Growth Equities, while BAMU is Ultrashort Bond. They also come from different issuers: Baron Capital and Brookstone. Their fees differ too: 1.00% for RONB and 1.09% for BAMU.