SSK vs. ETHD

Last updated Jul 10, 2026

SSK (REX-Osprey SOL + Staking ETF) and ETHD (ProShares UltraShort Ether ETF) are both Cryptocurrency funds. SSK is passively managed, while ETHD is actively managed. Over the past year, SSK returned -51.57% vs -33.59% for ETHD. At a correlation of -0.87, they often move in opposite directions. SSK charges 0.75%/yr vs 1.01%/yr for ETHD.

Performance

SSK vs. ETHD - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in REX-Osprey SOL + Staking ETF (SSK) and ProShares UltraShort Ether ETF (ETHD). 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 ETHD's 52.50% return.

SSK

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

ETHD

• 1D: -0.52%
• 1M: -17.04%
• 6M: 68.61%
• YTD: 52.50%
• 1Y: -33.59%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

SSK vs. ETHD - Yearly Performance Comparison

	2026 (YTD)	2025
SSK REX-Osprey SOL + Staking ETF	-35.36%	-23.21%
ETHD ProShares UltraShort Ether ETF	52.50%	-68.16%

Correlation

The correlation between SSK and ETHD is -0.88, 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 (1Y) Calculated over the trailing 1-year period	-0.88
Correlation (All Time) Calculated using the full available price history since Jul 2, 2025	-0.87

The correlation between SSK and ETHD has been stable across timeframes, ranging from -0.88 to -0.87 - a consistent structural relationship.

Return for Risk

SSK vs. ETHD — 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

ETHD

ETHD Risk / Return Rank: 9
ETHD Sharpe Ratio Rank: 7
ETHD Sortino Ratio Rank: 14
ETHD Omega Ratio Rank: 14
ETHD Calmar Ratio Rank: 5
ETHD Martin Ratio Rank: 6

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. ETHD - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for REX-Osprey SOL + Staking ETF (SSK) and ProShares UltraShort Ether ETF (ETHD). 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	ETHD	Difference
Sharpe ratio: Return per unit of total volatility	-0.71	-0.25	-0.47
Sortino ratio: Return per unit of downside risk	-0.90	0.55	-1.45
Omega ratio: Gain probability vs. loss probability	0.90	1.07	-0.16
Calmar ratio: Return relative to maximum drawdown	-0.70	-0.45	-0.25
Martin ratio: Return relative to average drawdown	-1.05	-0.66	-0.39

SSK vs. ETHD - Sharpe Ratio Comparison

The current SSK Sharpe Ratio is -0.71, which is lower than the ETHD Sharpe Ratio of -0.25. The chart below compares the historical Sharpe Ratios of SSK and ETHD, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

SSK vs. ETHD - Drawdown Comparison

The maximum SSK drawdown since its inception was -73.56%, smaller than the maximum ETHD drawdown of -95.59%. Use the drawdown chart below to compare losses from any high point for SSK and ETHD.

Drawdown Indicators

	SSK	ETHD	Difference
Max Drawdown Largest peak-to-trough decline	-73.56%	-95.59%	+22.03%
Max Drawdown (1Y) Largest decline over 1 year	-73.56%	-74.39%	+0.83%
Current Drawdown Current decline from peak	-67.24%	-88.08%	+20.84%
Average Drawdown Average peak-to-trough decline	-41.45%	-66.83%	+25.38%
Ulcer Index Depth and duration of drawdowns from previous peaks	48.98%	52.68%	-3.70%

Volatility

SSK vs. ETHD - Volatility Comparison

The current volatility for REX-Osprey SOL + Staking ETF (SSK) is 22.60%, while ProShares UltraShort Ether ETF (ETHD) has a volatility of 34.01%. This indicates that SSK experiences smaller price fluctuations and is considered to be less risky than ETHD based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SSK	ETHD	Difference
Volatility (1M) Calculated over the trailing 1-month period	22.60%	34.01%	-11.41%
Volatility (6M) Calculated over the trailing 6-month period	53.23%	93.66%	-40.43%
Volatility (1Y) Calculated over the trailing 1-year period	72.42%	136.85%	-64.43%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	71.90%	141.81%	-69.91%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	71.90%	141.81%	-69.91%

SSK vs. ETHD - Expense Ratio Comparison

SSK has a 0.75% expense ratio, which is lower than ETHD's 1.01% expense ratio.

Dividends

SSK vs. ETHD - Dividend Comparison

SSK's dividend yield for the trailing twelve months is around 31.51%, more than ETHD's 4.88% yield.

Position	TTM	2025	2024
ETHD ProShares UltraShort Ether ETF	4.88%	156.62%	19.15%
SSK REX-Osprey SOL + Staking ETF	31.51%	3.63%	0.00%

Frequently Asked Questions

Can I hold both SSK and ETHD in my portfolio?

SSK and ETHD have a correlation of -0.88, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SSK or ETHD?

ETHD has higher volatility (34.01%) compared to SSK (22.60%). In terms of maximum drawdown, SSK dropped -73.56% vs ETHD's -95.59%.

Which ETF is better, SSK or ETHD?

On 1-year performance, ETHD leads with -33.59% vs -51.57% for SSK. On fees, SSK is cheaper at 0.75% per year. On volatility, SSK has been the lower-risk option at 22.60%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, SSK or ETHD?

Over the 1-year period, ETHD has performed better with a -33.59% return vs -51.57%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, SSK or ETHD?

SSK is cheaper with a 0.75% expense ratio, compared with 1.01% for ETHD.

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

SSK has the higher dividend yield at 31.51%, compared with 4.88% for ETHD.

What is the main difference between SSK and ETHD?

They also come from different issuers: REX-Osprey and ProShares. Their fees differ too: 0.75% for SSK and 1.01% for ETHD.

Which has better risk-adjusted returns?

ETHD currently has the higher Sharpe Ratio (-0.25 vs -0.71), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.