SSK vs. CBTO

Last updated Jul 10, 2026

SSK (REX-Osprey SOL + Staking ETF) and CBTO (Calamos Bitcoin 80 Series Structured Alt Protection ETF - October) are both exchange-traded funds - SSK is a Cryptocurrency fund tracking the Solana, while CBTO is a Defined Outcome fund actively managed by Calamos. SSK is passively managed, while CBTO is actively managed. A 0.79 correlation means they provide meaningful diversification when combined. SSK charges 0.75%/yr vs 0.69%/yr for CBTO.

Performance

SSK vs. CBTO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in REX-Osprey SOL + Staking ETF (SSK) and Calamos Bitcoin 80 Series Structured Alt Protection ETF - October (CBTO). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SSK achieves a -35.36% return, which is significantly lower than CBTO's -8.32% return.

SSK

• 1D: 0.96%
• 1M: 20.10%
• 6M: -41.78%
• YTD: -35.36%
• 1Y: -51.57%
• 3Y*: —
• 5Y*: —
• 10Y*: —

CBTO

• 1D: 0.03%
• 1M: -0.20%
• 6M: -9.46%
• YTD: -8.32%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

SSK vs. CBTO - Yearly Performance Comparison

	2026 (YTD)	2025
SSK REX-Osprey SOL + Staking ETF	-35.36%	-46.49%
CBTO Calamos Bitcoin 80 Series Structured Alt Protection ETF - October	-8.32%	-13.82%

Correlation

The correlation between SSK and CBTO is 0.79, 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 7, 2025	0.79

Return for Risk

SSK vs. CBTO — Risk / Return Rank

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

SSK

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

CBTO

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

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.

SSK vs. CBTO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for REX-Osprey SOL + Staking ETF (SSK) and Calamos Bitcoin 80 Series Structured Alt Protection ETF - October (CBTO). 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.

	SSK	CBTO	Difference
Sharpe ratio: Return per unit of total volatility	-0.71	—	—
Sortino ratio: Return per unit of downside risk	-0.90	—	—
Omega ratio: Gain probability vs. loss probability	0.90	—	—
Calmar ratio: Return relative to maximum drawdown	-0.70	—	—
Martin ratio: Return relative to average drawdown	-1.05	—	—

Drawdowns

SSK vs. CBTO - Drawdown Comparison

The maximum SSK drawdown since its inception was -73.56%, which is greater than CBTO's maximum drawdown of -21.27%. Use the drawdown chart below to compare losses from any high point for SSK and CBTO.

Drawdown Indicators

	SSK	CBTO	Difference
Max Drawdown Largest peak-to-trough decline	-73.56%	-21.27%	-52.29%
Max Drawdown (1Y) Largest decline over 1 year	-73.56%	—	—
Current Drawdown Current decline from peak	-67.24%	-21.16%	-46.08%
Average Drawdown Average peak-to-trough decline	-41.45%	-15.64%	-25.81%
Ulcer Index Depth and duration of drawdowns from previous peaks	48.98%	—	—

Volatility

Volatility by Period

	SSK	CBTO	Difference
Volatility (1M) Calculated over the trailing 1-month period	22.60%	—	—
Volatility (6M) Calculated over the trailing 6-month period	53.23%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	72.42%	12.03%	+60.39%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	71.90%	12.03%	+59.87%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	71.90%	12.03%	+59.87%

SSK vs. CBTO - Expense Ratio Comparison

SSK has a 0.75% expense ratio, which is higher than CBTO's 0.69% expense ratio.

Dividends

SSK vs. CBTO - Dividend Comparison

SSK's dividend yield for the trailing twelve months is around 31.51%, more than CBTO's 0.24% yield.

Position	TTM	2025
CBTO Calamos Bitcoin 80 Series Structured Alt Protection ETF - October	0.24%	0.22%
SSK REX-Osprey SOL + Staking ETF	31.51%	3.63%

Frequently Asked Questions

Can I hold both SSK and CBTO in my portfolio?

SSK and CBTO have a correlation of 0.79, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, SSK or CBTO?

On fees, CBTO is cheaper at 0.69% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, SSK or CBTO?

CBTO is cheaper with a 0.69% expense ratio, compared with 0.75% for SSK.

Which ETF pays a higher dividend yield, SSK or CBTO?

SSK has the higher dividend yield at 31.51%, compared with 0.24% for CBTO.

What is the main difference between SSK and CBTO?

SSK is categorized as Cryptocurrency, while CBTO is Defined Outcome. They also come from different issuers: REX-Osprey and Calamos. Their fees differ too: 0.75% for SSK and 0.69% for CBTO.