OCTM vs. CPSP

Last updated Jun 4, 2026

OCTM (FT Vest U.S. Equity Max Buffer ETF - October) and CPSP (Calamos S&P 500 Structured Alt Protection ETF - April) are both exchange-traded funds - OCTM is a Defined Outcome fund actively managed by First Trust, while CPSP is a S&P 500 fund actively managed by Calamos. Both are actively managed. Over the past year, OCTM returned 8.16% vs 7.13% for CPSP. A 0.73 correlation means they provide meaningful diversification when combined. OCTM charges 0.85%/yr vs 0.69%/yr for CPSP.

Performance

OCTM vs. CPSP - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in FT Vest U.S. Equity Max Buffer ETF - October (OCTM) 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, OCTM achieves a 2.71% return, which is significantly lower than CPSP's 3.18% return.

OCTM

• 1D: -0.04%
• 1M: 0.84%
• YTD: 2.71%
• 6M: 3.16%
• 1Y: 8.16%
• 3Y*: —
• 5Y*: —
• 10Y*: —

CPSP

• 1D: 0.00%
• 1M: 0.60%
• YTD: 3.18%
• 6M: 3.74%
• 1Y: 7.13%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

OCTM vs. CPSP - Yearly Performance Comparison

	2026 (YTD)	2025
OCTM FT Vest U.S. Equity Max Buffer ETF - October	2.71%	7.49%
CPSP Calamos S&P 500 Structured Alt Protection ETF - April	3.18%	5.46%

Correlation

The correlation between OCTM and CPSP is 0.70, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.70
Correlation (All Time) Calculated using the full available price history since Apr 2, 2025	0.73

The correlation between OCTM and CPSP has been stable across timeframes, ranging from 0.70 to 0.73 - a consistent structural relationship.

Return for Risk

OCTM vs. CPSP — Risk / Return Rank

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

OCTM

OCTM Risk / Return Rank: 93
OCTM Sharpe Ratio Rank: 93
OCTM Sortino Ratio Rank: 95
OCTM Omega Ratio Rank: 95
OCTM Calmar Ratio Rank: 87
OCTM Martin Ratio Rank: 93

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: 98
CPSP Martin Ratio Rank: 99

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.

OCTM vs. CPSP - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for FT Vest U.S. Equity Max Buffer ETF - October (OCTM) 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.

	OCTM	CPSP	Difference
Sharpe ratio: Return per unit of total volatility	3.38	5.08	-1.69
Sortino ratio: Return per unit of downside risk	5.34	9.15	-3.81
Omega ratio: Gain probability vs. loss probability	1.74	2.31	-0.57
Calmar ratio: Return relative to maximum drawdown	4.99	19.11	-14.11
Martin ratio: Return relative to average drawdown	24.66	96.35	-71.69
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

OCTM vs. CPSP - Sharpe Ratio Comparison

The current OCTM Sharpe Ratio is 3.38, which is lower than the CPSP Sharpe Ratio of 5.08. The chart below compares the historical Sharpe Ratios of OCTM 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.

Sharpe Ratios by Period

	OCTM	CPSP	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.38	5.08	-1.69
Sharpe Ratio (All Time) Calculated using the full available price history	2.04	3.17	-1.13

Drawdowns

OCTM vs. CPSP - Drawdown Comparison

The maximum OCTM drawdown since its inception was -3.29%, which is greater than CPSP's maximum drawdown of -1.73%. Use the drawdown chart below to compare losses from any high point for OCTM and CPSP.

Drawdown Indicators

	OCTM	CPSP	Difference
Max Drawdown Largest peak-to-trough decline	-3.29%	-1.73%	-1.56%
Max Drawdown (1Y) Largest decline over 1 year	-1.64%	-0.37%	-1.27%
Current Drawdown Current decline from peak	-0.04%	0.00%	-0.04%
Average Drawdown Average peak-to-trough decline	-0.39%	-0.08%	-0.31%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.33%	0.07%	+0.26%

Volatility

OCTM vs. CPSP - Volatility Comparison

FT Vest U.S. Equity Max Buffer ETF - October (OCTM) has a higher volatility of 0.46% compared to Calamos S&P 500 Structured Alt Protection ETF - April (CPSP) at 0.32%. This indicates that OCTM'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

	OCTM	CPSP	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.46%	0.32%	+0.14%
Volatility (6M) Calculated over the trailing 6-month period	1.82%	0.84%	+0.98%
Volatility (1Y) Calculated over the trailing 1-year period	2.43%	1.42%	+1.01%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.10%	2.37%	+0.73%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.10%	2.37%	+0.73%

OCTM vs. CPSP - Expense Ratio Comparison

OCTM has a 0.85% expense ratio, which is higher than CPSP's 0.69% expense ratio.

Dividends

OCTM vs. CPSP - Dividend Comparison

Neither OCTM nor CPSP has paid dividends to shareholders.

Tickers have no history of dividend payments

Frequently Asked Questions

Can I hold both OCTM and CPSP in my portfolio?

OCTM and CPSP have a correlation of 0.70, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, OCTM or CPSP?

OCTM has higher volatility (0.46%) compared to CPSP (0.32%). In terms of maximum drawdown, OCTM dropped -3.29% vs CPSP's -1.73%.

Which ETF is better, OCTM or CPSP?

On 1-year performance, OCTM leads with 8.16% vs 7.13% for CPSP. On fees, CPSP is cheaper at 0.69% per year. On volatility, CPSP has been the lower-risk option at 0.32%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, OCTM or CPSP?

Over the 1-year period, OCTM has performed better with a 8.16% return vs 7.13%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, OCTM or CPSP?

CPSP is cheaper with a 0.69% expense ratio, compared with 0.85% for OCTM.

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

OCTM and CPSP have nearly identical dividend yields, around 0.00%.

What is the main difference between OCTM and CPSP?

OCTM is categorized as Defined Outcome, while CPSP is S&P 500. They also come from different issuers: First Trust and Calamos. Their fees differ too: 0.85% for OCTM and 0.69% for CPSP.

Which has better risk-adjusted returns?

CPSP currently has the higher Sharpe Ratio (5.08 vs 3.38), 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.