CPSM
Calamos S&P 500 Structured Alt Protection ETF - May
stockNYSEETF
At CloseOct 2, 2026
29.63USD+0.067%(+0.02)154
After-hoursOct 2, 2026 4:10:30 PM EDT
29.63USD0.000%(0.00)
As of 2026-09-15, there were 4,398 shares short with a short interest of 0.22%.
CPSM Short Interest - Official
Short Interest
CPSM Short Position Change - Official
Short Position Change
CPSM Short Interest - Official
| Settlement Date1 | Short Interest % | Short Position | Days to Cover2 | Short Position Change | Short Position Change % | Shares Out | Shares Float |
|---|---|---|---|---|---|---|---|
| 2026-09-15 | 0.22 | 4,398 | 1.99 | -347 | -7.31 | 2,000,000 | 2,000,000 |
| 2026-08-31 | 0.24 | 4,745 | 3.74 | -6,172 | -56.54 | 2,000,000 | 2,000,000 |
| 2026-08-14 | 0.55 | 10,917 | 6.15 | -413 | -3.65 | 2,000,000 | 2,000,000 |
| 2026-07-31 | 0.60 | 11,330 | 3.74 | -1,493 | -11.64 | 1,900,000 | 1,900,000 |
| 2026-07-15 | 0.67 | 12,823 | 7.63 | +75 | +0.59 | 1,900,000 | 1,900,000 |
| 2026-06-30 | 0.67 | 12,748 | 4.48 | -6,252 | -32.91 | 1,900,000 | 1,900,000 |
| 2026-06-15 | 1.00 | 19,000 | 3.03 | +14,801 | +352.49 | 1,900,000 | 1,900,000 |
| 2026-05-15 | 0.23 | 4,199 | 1.00 | -3,947 | -48.45 | 1,800,000 | 1,800,000 |
| 2026-04-30 | 0.45 | 8,146 | 1.90 | +3,098 | +61.37 | 1,800,000 | 1,800,000 |
| 2026-04-15 | 0.27 | 5,048 | 2.54 | -1,997 | -28.35 | 1,900,000 | 1,900,000 |
| 2026-03-31 | 0.37 | 7,045 | 1.99 | +844 | +13.61 | 1,900,000 | 1,900,000 |
| 2026-03-13 | 0.33 | 6,201 | 1.85 | -2,562 | -29.24 | 1,900,000 | 1,900,000 |
| 2026-02-27 | 0.46 | 8,763 | 6.18 | -290 | -3.20 | 1,900,000 | 1,900,000 |
| 2026-02-13 | 0.48 | 9,053 | 1.47 | +8,579 | +1,809.92 | 1,900,000 | 1,900,000 |
| 2026-01-30 | 0.02 | 474 | 1.00 | +471 | +15,700.00 | 1,900,000 | 1,900,000 |
| 2026-01-15 | 0.00 | 3 | 1.00 | -803 | -99.63 | 2,000,000 | 2,000,000 |
| 2025-12-31 | 0.04 | 806 | 1.00 | -415 | -33.99 | 2,000,000 | 2,000,000 |
| 2025-12-15 | 0.06 | 1,221 | 1.00 | +660 | +117.65 | 2,000,000 | 2,000,000 |
| 2025-11-28 | 0.03 | 561 | 1.00 | +58 | +11.53 | 2,000,000 | 2,000,000 |
| 2025-11-14 | 0.02 | 503 | 1.00 | +1 | +0.20 | 2,200,000 | 2,200,000 |
| 2025-10-31 | 0.02 | 502 | 1.00 | -938 | -65.14 | 2,200,000 | 2,200,000 |
| 2025-10-15 | 0.07 | 1,440 | 1.00 | +1,410 | +4,700.00 | 2,200,000 | 2,200,000 |
Historical data is split-adjusted.
1 Data from Finra. Finra publishes an updated file every two weeks.
2 Days to Cover (DTC) is also called Short Ratio. This is the Short Position / Average Daily Trading Volume.