CPSR
Calamos S&P 500 Structured Alt Protection ETF - March
stockNYSEETF
At CloseOct 2, 2026 12:10:45 PM EDT
26.19USD+0.076%(+0.02)1,033
As of 2026-09-15, there were 3,713 shares short with a short interest of 0.02%.
CPSR Short Interest - Official
Short Interest
CPSR Short Position Change - Official
Short Position Change
CPSR 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 | 0.02 | 3,713 | 2.88 | +1,418 | +61.79 | 1,300,000 | 19,818,372 |
| 2026-08-31 | 0.01 | 2,295 | 3.51 | -23,466 | -91.09 | 1,300,000 | 19,818,372 |
| 2026-08-14 | 0.13 | 25,761 | 30.96 | +5,161 | +25.05 | 1,200,000 | 19,818,372 |
| 2026-07-31 | 0.10 | 20,600 | 23.12 | +8,577 | +71.34 | 1,200,000 | 19,818,372 |
| 2026-07-15 | 0.06 | 12,023 | 15.55 | +7,565 | +169.69 | 1,200,000 | 19,818,372 |
| 2026-06-30 | 0.02 | 4,458 | 3.06 | -1,630 | -26.77 | 1,200,000 | 19,818,372 |
| 2026-06-15 | 0.03 | 6,088 | 8.34 | +1,714 | +39.19 | 1,200,000 | 19,818,372 |
| 2026-05-15 | 0.02 | 4,374 | 1.37 | -9,221 | -67.83 | 1,200,000 | 19,818,372 |
| 2026-04-30 | 0.07 | 13,595 | 7.52 | +2,519 | +22.74 | 1,200,000 | 19,818,372 |
| 2026-04-15 | 0.06 | 11,076 | 2.73 | -18,381 | -62.40 | 1,200,000 | 19,818,372 |
| 2026-03-31 | 0.15 | 29,457 | 2.87 | -13,291 | -31.09 | 1,200,000 | 19,818,372 |
| 2026-03-13 | 0.22 | 42,748 | 1.66 | +38,128 | +825.28 | 1,000,000 | 19,818,372 |
| 2026-02-27 | 0.02 | 4,620 | 2.85 | +1,452 | +45.83 | 900,000 | 19,818,372 |
| 2026-02-13 | 0.02 | 3,168 | 1.25 | +2,715 | +599.34 | 900,000 | 19,818,372 |
| 2026-01-30 | 0.00 | 453 | 1.00 | +359 | +381.91 | 900,000 | 19,818,372 |
| 2025-11-28 | 0.00 | 94 | 1.00 | 0 | 0.00 | 900,000 | 19,818,372 |
| 2025-11-14 | 0.00 | 94 | 1.00 | -195 | -67.47 | 900,000 | 19,818,372 |
| 2025-10-31 | 0.00 | 289 | 1.00 | -926 | -76.21 | 900,000 | 19,818,372 |
| 2025-10-15 | 0.01 | 1,215 | 1.77 | +1,213 | +60,650.00 | 900,000 | 19,818,372 |
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.