COYY vs. BAMU

Last updated Jun 24, 2026

COYY (GraniteShares YieldBOOST COIN ETF) and BAMU (Brookstone Ultra-Short Bond ETF) are both exchange-traded funds - COYY is a Derivative Income fund actively managed by GraniteShares, while BAMU is a Ultrashort Bond fund actively managed by Brookstone. Both are actively managed. At a correlation of -0.09, they often move in opposite directions. COYY charges 1.07%/yr vs 1.09%/yr for BAMU.

Performance

COYY vs. BAMU - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in GraniteShares YieldBOOST COIN ETF (COYY) 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, COYY achieves a -30.87% return, which is significantly lower than BAMU's 1.18% return.

COYY

• 1D: -1.04%
• 1M: -6.93%
• YTD: -30.87%
• 6M: -36.84%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

BAMU

• 1D: 0.00%
• 1M: 0.16%
• YTD: 1.18%
• 6M: 1.29%
• 1Y: 2.87%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

COYY vs. BAMU - Yearly Performance Comparison

	2026 (YTD)	2025
COYY GraniteShares YieldBOOST COIN ETF	-30.87%	-40.04%
BAMU Brookstone Ultra-Short Bond ETF	1.18%	1.37%

Correlation

The correlation between COYY and BAMU is -0.09, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (All Time) Calculated using the full available price history since Jul 29, 2025	-0.09

Return for Risk

COYY vs. BAMU — Risk / Return Rank

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

COYY

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

BAMU

BAMU Risk / Return Rank: 98
BAMU Sharpe Ratio Rank: 98
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.

COYY vs. BAMU - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for GraniteShares YieldBOOST COIN ETF (COYY) 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.

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.

	COYY	BAMU	Difference
Sharpe ratio: Return per unit of total volatility	—	4.94	—
Sortino ratio: Return per unit of downside risk	—	8.71	—
Omega ratio: Gain probability vs. loss probability	—	2.41	—
Calmar ratio: Return relative to maximum drawdown	—	24.37	—
Martin ratio: Return relative to average drawdown	—	96.52	—

Drawdowns

COYY vs. BAMU - Drawdown Comparison

The maximum COYY drawdown since its inception was -59.60%, which is greater than BAMU's maximum drawdown of -0.36%. Use the drawdown chart below to compare losses from any high point for COYY and BAMU.

Drawdown Indicators

	COYY	BAMU	Difference
Max Drawdown Largest peak-to-trough decline	-59.60%	-0.36%	-59.24%
Max Drawdown (1Y) Largest decline over 1 year	—	-0.12%	—
Current Drawdown Current decline from peak	-59.30%	0.00%	-59.30%
Average Drawdown Average peak-to-trough decline	-36.43%	-0.02%	-36.41%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.03%	—

Volatility

Volatility by Period

	COYY	BAMU	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.09%	—
Volatility (6M) Calculated over the trailing 6-month period	—	0.39%	—
Volatility (1Y) Calculated over the trailing 1-year period	35.41%	0.58%	+34.83%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	35.41%	0.87%	+34.54%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	35.41%	0.87%	+34.54%

COYY vs. BAMU - Expense Ratio Comparison

COYY has a 1.07% expense ratio, which is lower than BAMU's 1.09% expense ratio.

Dividends

COYY vs. BAMU - Dividend Comparison

COYY's dividend yield for the trailing twelve months is around 414.70%, more than BAMU's 3.05% yield.

Position	TTM	2025	2024	2023
BAMU Brookstone Ultra-Short Bond ETF	3.05%	3.20%	3.97%	0.84%
COYY GraniteShares YieldBOOST COIN ETF	414.70%	132.14%	0.00%	0.00%

Frequently Asked Questions

Can I hold both COYY and BAMU in my portfolio?

COYY and BAMU have a correlation of -0.09, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, COYY or BAMU?

On fees, COYY is cheaper at 1.07% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, COYY or BAMU?

COYY is cheaper with a 1.07% expense ratio, compared with 1.09% for BAMU.

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

COYY has the higher dividend yield at 414.70%, compared with 3.05% for BAMU.

What is the main difference between COYY and BAMU?

COYY is categorized as Derivative Income, while BAMU is Ultrashort Bond. They also come from different issuers: GraniteShares and Brookstone. Their fees differ too: 1.07% for COYY and 1.09% for BAMU.