SPXU vs. CPSP

Last updated Aug 6, 2026

SPXU (ProShares UltraPro Short S&P500) and CPSP (Calamos S&P 500 Structured Alt Protection ETF - April) are both S&P 500 funds. SPXU is passively managed, while CPSP is actively managed. Over the past year, SPXU returned -44.77% vs 6.44% for CPSP. Their -0.76 correlation means they have often moved in opposite directions in the past. SPXU charges 0.90%/yr vs 0.69%/yr for CPSP.

Performance

SPXU vs. CPSP - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in ProShares UltraPro Short S&P500 (SPXU) and Calamos S&P 500 Structured Alt Protection ETF - April (CPSP). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SPXU achieves a -30.45% return, which is significantly lower than CPSP's 3.97% return.

SPXU

• 1D: 0.65%
• 1M: -6.80%
• 6M: -29.62%
• YTD: -30.45%
• 1Y: -44.77%
• 3Y*: -42.04%
• 5Y*: -33.66%
• 10Y*: -41.50%
• ALL TIME*: -42.79%

CPSP

• 1D: 0.03%
• 1M: 0.57%
• 6M: 3.49%
• YTD: 3.97%
• 1Y: 6.44%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 7.46%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
CPSP Calamos S&P 500 Structured Alt Protection ETF - April	$54.81K	$124.01K	$65.25K
SPXU ProShares UltraPro Short S&P500	$347.12M	$308.29M	$360.15M

SPXU vs. CPSP - Yearly Performance Comparison

	2026 (YTD)	2025
SPXU ProShares UltraPro Short S&P500	-30.45%	-49.14%
CPSP Calamos S&P 500 Structured Alt Protection ETF - April	3.97%	5.96%

Correlation

The correlation between SPXU and CPSP is -0.75, meaning they have often moved in opposite directions in the past. This relationship can weaken or reverse as market conditions change.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	-0.75
Correlation (All Time) Calculated using the full available price history since Apr 1, 2025	-0.76

The correlation between SPXU and CPSP has been stable across timeframes, ranging from -0.76 to -0.75 - a consistent structural relationship.

Return for Risk

SPXU vs. CPSP — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

SPXU

SPXU Risk / Return Rank: 1
SPXU Sharpe Ratio Rank: 1
SPXU Sortino Ratio Rank: 1
SPXU Omega Ratio Rank: 1
SPXU Calmar Ratio Rank: 0
SPXU Martin Ratio Rank: 0

CPSP

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

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

SPXU vs. CPSP - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for ProShares UltraPro Short S&P500 (SPXU) and Calamos S&P 500 Structured Alt Protection ETF - April (CPSP). 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.

	SPXU	CPSP	Difference
Sharpe ratio: Return per unit of total volatility	-1.17	4.65	-5.82
Sortino ratio: Return per unit of downside risk	-1.86	8.45	-10.31
Omega ratio: Gain probability vs. loss probability	0.80	2.15	-1.35
Calmar ratio: Return relative to maximum drawdown	-1.00	17.26	-18.26
Martin ratio: Return relative to average drawdown	-1.81	66.49	-68.30

SPXU vs. CPSP - Sharpe Ratio Comparison

The current SPXU Sharpe Ratio is -1.17, which is lower than the CPSP Sharpe Ratio of 4.65. The chart below compares the historical Sharpe Ratios of SPXU and CPSP, 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

SPXU vs. CPSP - Drawdown Comparison

The maximum SPXU drawdown since its inception was -99.99%, which is greater than CPSP's maximum drawdown of -1.73%. Use the drawdown chart below to compare losses from any high point for SPXU and CPSP.

Drawdown Indicators

	SPXU	CPSP	Difference
Max Drawdown Largest peak-to-trough decline	-99.99%	-1.73%	-98.26%
Max Drawdown (1Y) Largest decline over 1 year	-45.07%	-0.37%	-44.70%
Max Drawdown (3Y) Largest decline over 3 years	-85.17%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-90.73%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-99.58%	—	—
Current Drawdown Current decline from peak	-99.99%	0.00%	-99.99%
Average Drawdown Average peak-to-trough decline	-93.38%	-0.09%	-93.29%
Ulcer Index Depth and duration of drawdowns from previous peaks	25.44%	0.10%	+25.34%

Volatility

SPXU vs. CPSP - Volatility Comparison

ProShares UltraPro Short S&P500 (SPXU) has a higher volatility of 12.32% compared to Calamos S&P 500 Structured Alt Protection ETF - April (CPSP) at 0.52%. This indicates that SPXU's price experiences larger fluctuations and is considered to be riskier than CPSP based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SPXU	CPSP	Difference
Volatility (1M) Calculated over the trailing 1-month period	12.32%	0.52%	+11.80%
Volatility (6M) Calculated over the trailing 6-month period	30.95%	0.98%	+29.97%
Volatility (1Y) Calculated over the trailing 1-year period	38.41%	1.39%	+37.02%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	50.77%	2.31%	+48.46%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	53.45%	2.31%	+51.14%

SPXU vs. CPSP - Expense Ratio Comparison

SPXU has a 0.90% expense ratio, which is higher than CPSP's 0.69% expense ratio.

Dividends

SPXU vs. CPSP - Dividend Comparison

SPXU's dividend yield for the trailing twelve months is around 7.46%, while CPSP has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
CPSP Calamos S&P 500 Structured Alt Protection ETF - April	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
SPXU ProShares UltraPro Short S&P500	7.46%	7.02%	9.53%	7.06%	0.39%	0.00%	0.70%	2.14%	1.41%	0.10%

Frequently Asked Questions

Can I hold both SPXU and CPSP in my portfolio?

SPXU and CPSP have a correlation of -0.75, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SPXU or CPSP?

SPXU has higher volatility (12.32%) compared to CPSP (0.52%). In terms of maximum drawdown, SPXU dropped -99.99% vs CPSP's -1.73%.

Which ETF is better, SPXU or CPSP?

On 1-year performance, CPSP leads with 6.44% vs -44.77% for SPXU. On fees, CPSP is cheaper at 0.69% per year. On volatility, CPSP has been the lower-risk option at 0.52%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, SPXU or CPSP?

Over the 1-year period, CPSP has performed better with a 6.44% return vs -44.77%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, SPXU or CPSP?

CPSP is cheaper with a 0.69% expense ratio, compared with 0.90% for SPXU.

Which ETF pays a higher dividend yield, SPXU or CPSP?

SPXU has the higher dividend yield at 7.46%, compared with 0.00% for CPSP.

What is the main difference between SPXU and CPSP?

They also come from different issuers: ProShares and Calamos. Their fees differ too: 0.90% for SPXU and 0.69% for CPSP.

Which has better risk-adjusted returns?

CPSP currently has the higher Sharpe Ratio (4.65 vs -1.17), 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.