# Calamos S&P 500 Structured Alt Protection ETF - May (CPSM)

> Source: Nexqual · https://nexqual.com/CPSM · data as of 2026-10-23 19:38 UTC · cite as "Nexqual, Calamos S&P 500 Structured Alt Protection ETF - May (CPSM), nexqual.com/CPSM" · informational, not investment advice.

**Price:** USD 29.68 (-0.03% on the day) · last close of Oct 23, 2026; US market after hours, not a live price. Prev close 29.69 · day 29.68–29.68 · 52w 27.75–29.79 · market cap null · PCX

## Key facts
- Total return with dividends: 1Y +4.5% vs S&P 500 +13.4%; 5Y +17.9% vs S&P 500 +76.9%.

## Total return (dividends reinvested)
|  | 1Y (from 2025-10-24) | 5Y (from 2024-04-29) |
|---|---|---|
| Total return | +4.5% | +17.9% |
| S&P 500 (SPY) | +13.4% | +76.9% |
| Per year | +4.6% | +6.8% |
| Volatility (annualized) | 1.7% | 4.0% |
| Max drawdown | -0.5% (May 2026→Jun 2026) | -4.5% (Feb 2025→Mar 2025) |

## Peers
CPNJ (Calamos Nasdaq - 100 Structured) USD 27.63 -0.05% · CPSJ (Calamos S&P 500 Structured Alt ) USD 28.02 -0.28% · CPSA (Calamos S&P 500 Structured Alt ) USD 28.17 -0.11% · TJUL (Innovator Equity Defined Protec) USD 30.74 +0.04% · MAXJ (iShares Large Cap Max Buffer Ju) USD 29.52 -0.10%

## More
Full page: https://nexqual.com/CPSM · Free keyless MCP server with the same data and citations: https://mcp.nexqual.com/mcp · Guide for agents: https://nexqual.com/agents · https://nexqual.com/llms.txt