FETH vs. CBOO

Last updated Jun 4, 2026

FETH (Fidelity Ethereum Fund) and CBOO (Calamos Bitcoin Structured Alt Protection ETF - October) are both exchange-traded funds - FETH is a Cryptocurrency fund tracking the Fidelity Ethereum Reference Rate Index, while CBOO is a Defined Outcome fund actively managed by Calamos. FETH is passively managed, while CBOO is actively managed. A 0.69 correlation means they provide meaningful diversification when combined. FETH charges 0.00%/yr vs 0.69%/yr for CBOO.

Performance

FETH vs. CBOO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity Ethereum Fund (FETH) and Calamos Bitcoin Structured Alt Protection ETF - October (CBOO). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FETH achieves a -39.45% return, which is significantly lower than CBOO's -0.04% return.

FETH

• 1D: -5.78%
• 1M: -23.67%
• YTD: -39.45%
• 6M: -42.77%
• 1Y: -31.75%
• 3Y*: —
• 5Y*: —
• 10Y*: —

CBOO

• 1D: -0.04%
• 1M: -0.00%
• YTD: -0.04%
• 6M: -0.22%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

FETH vs. CBOO - Yearly Performance Comparison

	2026 (YTD)	2025
FETH Fidelity Ethereum Fund	-39.45%	-33.77%
CBOO Calamos Bitcoin Structured Alt Protection ETF - October	-0.04%	-1.62%

Correlation

The correlation between FETH and CBOO is 0.69, 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 Oct 8, 2025	0.69

Return for Risk

FETH vs. CBOO — Risk / Return Rank

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

FETH

FETH Risk / Return Rank: 5
FETH Sharpe Ratio Rank: 5
FETH Sortino Ratio Rank: 5
FETH Omega Ratio Rank: 5
FETH Calmar Ratio Rank: 4
FETH Martin Ratio Rank: 5

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.

FETH vs. CBOO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Ethereum Fund (FETH) and Calamos Bitcoin Structured Alt Protection ETF - October (CBOO). 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.

	FETH	CBOO	Difference
Sharpe ratio: Return per unit of total volatility	-0.47	—	—
Sortino ratio: Return per unit of downside risk	-0.32	—	—
Omega ratio: Gain probability vs. loss probability	0.97	—	—
Calmar ratio: Return relative to maximum drawdown	-0.51	—	—
Martin ratio: Return relative to average drawdown	-0.84	—	—
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

Sharpe Ratios by Period

	FETH	CBOO	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.47	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	-0.41	-1.19	+0.77

Drawdowns

FETH vs. CBOO - Drawdown Comparison

The maximum FETH drawdown since its inception was -64.00%, which is greater than CBOO's maximum drawdown of -2.34%. Use the drawdown chart below to compare losses from any high point for FETH and CBOO.

Drawdown Indicators

	FETH	CBOO	Difference
Max Drawdown Largest peak-to-trough decline	-64.00%	-2.34%	-61.66%
Max Drawdown (1Y) Largest decline over 1 year	-62.95%	—	—
Current Drawdown Current decline from peak	-62.95%	-1.72%	-61.23%
Average Drawdown Average peak-to-trough decline	-32.73%	-1.61%	-31.12%
Ulcer Index Depth and duration of drawdowns from previous peaks	37.82%	—	—

Volatility

Volatility by Period

	FETH	CBOO	Difference
Volatility (1M) Calculated over the trailing 1-month period	9.99%	—	—
Volatility (6M) Calculated over the trailing 6-month period	46.01%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	68.50%	2.14%	+66.36%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	72.27%	2.14%	+70.13%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	72.27%	2.14%	+70.13%

FETH vs. CBOO - Expense Ratio Comparison

FETH has a 0.00% expense ratio, which is lower than CBOO's 0.69% expense ratio.

Dividends

FETH vs. CBOO - Dividend Comparison

FETH has not paid dividends to shareholders, while CBOO's dividend yield for the trailing twelve months is around 0.57%.

Position	TTM	2025
CBOO Calamos Bitcoin Structured Alt Protection ETF - October	0.57%	0.57%
FETH Fidelity Ethereum Fund	0.00%	0.00%

Frequently Asked Questions

Can I hold both FETH and CBOO in my portfolio?

FETH and CBOO have a correlation of 0.69, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, FETH or CBOO?

On fees, FETH is cheaper at 0.00% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, FETH or CBOO?

FETH is cheaper with a 0.00% expense ratio, compared with 0.69% for CBOO.

Which ETF pays a higher dividend yield, FETH or CBOO?

CBOO has the higher dividend yield at 0.57%, compared with 0.00% for FETH.

What is the main difference between FETH and CBOO?

FETH is categorized as Cryptocurrency, while CBOO is Defined Outcome. They also come from different issuers: Fidelity and Calamos. Their fees differ too: 0.00% for FETH and 0.69% for CBOO.