CPSF
Calamos S&P 500 Structured Alt Protection ETF - February
stockNYSEETF
At CloseOct 1, 2026 3:35:06 PM EDT
26.58USD0.000%(+26.58)1,243
After-hoursOct 2, 2026 4:10:30 PM EDT
26.66USD+0.282%(+0.07)
As of 2026-09-15, there were 3,549 shares short with a short interest of 0.27%.
CPSF Short Interest - Official
Short Interest
CPSF Short Position Change - Official
Short Position Change
CPSF 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 | 0.27 | 3,549 | 1.21 | -4,720 | -57.08 | 1,300,000 | 1,299,924 |
| 2026-08-31 | 0.64 | 8,269 | 4.69 | -9,978 | -54.68 | 1,300,000 | 1,299,924 |
| 2026-08-14 | 1.40 | 18,247 | 23.85 | +5,900 | +47.78 | 1,300,000 | 1,299,924 |
| 2026-07-31 | 0.95 | 12,347 | 8.88 | +1,572 | +14.59 | 1,300,000 | 1,300,000 |
| 2026-07-15 | 0.83 | 10,775 | 11.79 | +4,851 | +81.89 | 1,300,000 | 1,300,000 |
| 2026-06-30 | 0.46 | 5,924 | 9.11 | +807 | +15.77 | 1,300,000 | 1,300,000 |
| 2026-06-15 | 0.39 | 5,117 | 3.38 | +1,200 | +30.64 | 1,300,000 | 1,300,000 |
| 2026-05-15 | 0.30 | 3,917 | 1.06 | -3,087 | -44.07 | 1,300,000 | 1,300,000 |
| 2026-04-30 | 0.54 | 7,004 | 6.60 | -1,104 | -13.62 | 1,300,000 | 1,300,000 |
| 2026-04-15 | 0.62 | 8,108 | 3.56 | -6,119 | -43.01 | 1,300,000 | 1,300,000 |
| 2026-03-31 | 1.09 | 14,227 | 2.09 | +11,667 | +455.74 | 1,300,000 | 1,300,000 |
| 2026-03-13 | 0.20 | 2,560 | 1.02 | -3,491 | -57.69 | 1,300,000 | 1,300,000 |
| 2026-02-27 | 0.47 | 6,051 | 1.03 | -730 | -10.77 | 1,300,000 | 1,300,000 |
| 2026-02-13 | 0.62 | 6,781 | 1.00 | +48 | +0.71 | 1,100,000 | 1,100,000 |
| 2026-01-30 | 0.75 | 6,733 | 1.00 | +5,934 | +742.68 | 900,000 | 900,000 |
| 2026-01-15 | 0.09 | 799 | 1.00 | +672 | +529.13 | 900,000 | 900,000 |
| 2025-12-31 | 0.01 | 127 | 1.00 | -236 | -65.01 | 900,000 | 900,000 |
| 2025-12-15 | 0.04 | 363 | 1.00 | -157 | -30.19 | 900,000 | 900,000 |
| 2025-11-28 | 0.06 | 520 | 1.00 | -3 | -0.57 | 900,000 | 900,000 |
| 2025-11-14 | 0.05 | 523 | 3.76 | -180 | -25.60 | 1,000,000 | 1,000,000 |
| 2025-10-31 | 0.07 | 703 | 1.00 | -1,237 | -63.76 | 1,000,000 | 1,000,000 |
| 2025-10-15 | 0.19 | 1,940 | 1.67 | +1,816 | +1,464.52 | 1,000,000 | 1,000,000 |
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.