CPSJ vs. RBIL

Last updated Jun 23, 2026

CPSJ (Calamos S&P 500 Structured Alt Protection ETF - July) and RBIL (F/m Ultrashort Treasury Inflation-Protected Security (TIPS) ETF) are both exchange-traded funds - CPSJ is a Defined Outcome fund tracking the MerQube Cap Protect US Lrg Cap PR Index - Jul, while RBIL is a Inflation-Protected Bonds fund tracking the Bloomberg US Ultrashort TIPS 1-13 Months Index. Both are passively managed. Over the past year, CPSJ returned 7.14% vs 3.95% for RBIL. At a correlation of -0.17, they often move in opposite directions. CPSJ charges 0.69%/yr vs 0.17%/yr for RBIL.

Performance

CPSJ vs. RBIL - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Calamos S&P 500 Structured Alt Protection ETF - July (CPSJ) and F/m Ultrashort Treasury Inflation-Protected Security (TIPS) ETF (RBIL). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CPSJ achieves a 2.85% return, which is significantly higher than RBIL's 2.31% return.

CPSJ

• 1D: 0.02%
• 1M: 0.42%
• YTD: 2.85%
• 6M: 2.90%
• 1Y: 7.14%
• 3Y*: —
• 5Y*: —
• 10Y*: —

RBIL

• 1D: -0.05%
• 1M: -0.20%
• YTD: 2.31%
• 6M: 2.35%
• 1Y: 3.95%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

CPSJ vs. RBIL - Yearly Performance Comparison

	2026 (YTD)	2025
CPSJ Calamos S&P 500 Structured Alt Protection ETF - July	2.85%	6.29%
RBIL F/m Ultrashort Treasury Inflation-Protected Security (TIPS) ETF	2.31%	2.85%

Correlation

The correlation between CPSJ and RBIL is -0.19, 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	-0.19
Correlation (All Time) Calculated using the full available price history since Feb 25, 2025	-0.17

Return for Risk

CPSJ vs. RBIL — Risk / Return Rank

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

CPSJ

CPSJ Risk / Return Rank: 94
CPSJ Sharpe Ratio Rank: 94
CPSJ Sortino Ratio Rank: 96
CPSJ Omega Ratio Rank: 96
CPSJ Calmar Ratio Rank: 89
CPSJ Martin Ratio Rank: 95

RBIL

RBIL Risk / Return Rank: 97
RBIL Sharpe Ratio Rank: 97
RBIL Sortino Ratio Rank: 97
RBIL Omega Ratio Rank: 98
RBIL Calmar Ratio Rank: 95
RBIL Martin Ratio Rank: 97

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.

CPSJ vs. RBIL - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Calamos S&P 500 Structured Alt Protection ETF - July (CPSJ) and F/m Ultrashort Treasury Inflation-Protected Security (TIPS) ETF (RBIL). 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.

	CPSJ	RBIL	Difference
Sharpe ratio: Return per unit of total volatility	3.37	4.18	-0.81
Sortino ratio: Return per unit of downside risk	5.58	6.39	-0.81
Omega ratio: Gain probability vs. loss probability	1.77	2.06	-0.30
Calmar ratio: Return relative to maximum drawdown	5.18	7.59	-2.41
Martin ratio: Return relative to average drawdown	29.40	44.07	-14.67

CPSJ vs. RBIL - Sharpe Ratio Comparison

The current CPSJ Sharpe Ratio is 3.37, which is comparable to the RBIL Sharpe Ratio of 4.18. The chart below compares the historical Sharpe Ratios of CPSJ and RBIL, 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

CPSJ vs. RBIL - Drawdown Comparison

The maximum CPSJ drawdown since its inception was -5.36%, which is greater than RBIL's maximum drawdown of -0.52%. Use the drawdown chart below to compare losses from any high point for CPSJ and RBIL.

Drawdown Indicators

	CPSJ	RBIL	Difference
Max Drawdown Largest peak-to-trough decline	-5.36%	-0.52%	-4.84%
Max Drawdown (1Y) Largest decline over 1 year	-1.38%	-0.52%	-0.86%
Current Drawdown Current decline from peak	0.00%	-0.51%	+0.51%
Average Drawdown Average peak-to-trough decline	-0.44%	-0.07%	-0.37%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.24%	0.09%	+0.15%

Volatility

CPSJ vs. RBIL - Volatility Comparison

Calamos S&P 500 Structured Alt Protection ETF - July (CPSJ) and F/m Ultrashort Treasury Inflation-Protected Security (TIPS) ETF (RBIL) have volatilities of 0.35% and 0.36%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CPSJ	RBIL	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.35%	0.36%	-0.01%
Volatility (6M) Calculated over the trailing 6-month period	1.65%	0.85%	+0.80%
Volatility (1Y) Calculated over the trailing 1-year period	2.13%	0.95%	+1.18%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.53%	1.07%	+3.46%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.53%	1.07%	+3.46%

CPSJ vs. RBIL - Expense Ratio Comparison

CPSJ has a 0.69% expense ratio, which is higher than RBIL's 0.17% expense ratio.

Dividends

CPSJ vs. RBIL - Dividend Comparison

CPSJ has not paid dividends to shareholders, while RBIL's dividend yield for the trailing twelve months is around 4.38%.

Position	TTM	2025
CPSJ Calamos S&P 500 Structured Alt Protection ETF - July	0.00%	0.00%
RBIL F/m Ultrashort Treasury Inflation-Protected Security (TIPS) ETF	4.38%	3.65%

Frequently Asked Questions

Can I hold both CPSJ and RBIL in my portfolio?

CPSJ and RBIL have a correlation of -0.19, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, CPSJ or RBIL?

RBIL has higher volatility (0.36%) compared to CPSJ (0.35%). In terms of maximum drawdown, CPSJ dropped -5.36% vs RBIL's -0.52%.

Which ETF is better, CPSJ or RBIL?

On 1-year performance, CPSJ leads with 7.14% vs 3.95% for RBIL. On fees, RBIL is cheaper at 0.17% per year. Their volatility is very similar. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, CPSJ or RBIL?

Over the 1-year period, CPSJ has performed better with a 7.14% return vs 3.95%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, CPSJ or RBIL?

RBIL is cheaper with a 0.17% expense ratio, compared with 0.69% for CPSJ.

Which ETF pays a higher dividend yield, CPSJ or RBIL?

RBIL has the higher dividend yield at 4.38%, compared with 0.00% for CPSJ.

What is the main difference between CPSJ and RBIL?

CPSJ is categorized as Defined Outcome, while RBIL is Inflation-Protected Bonds. CPSJ tracks MerQube Cap Protect US Lrg Cap PR Index - Jul, while RBIL tracks Bloomberg US Ultrashort TIPS 1-13 Months Index. They also come from different issuers: Calamos and F/m. Their fees differ too: 0.69% for CPSJ and 0.17% for RBIL.

Which has better risk-adjusted returns?

RBIL currently has the higher Sharpe Ratio (4.18 vs 3.37), 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.