CPSJ
Calamos S&P 500 Structured Alt Protection ETF - July
stockNYSEETF
At CloseOct 2, 2026 1:51:36 PM EDT
28.01USD-0.036%(-0.01)1,211
27.99Bid28.08Ask0.09SpreadAs of 2026-09-15, there were 30,644 shares short with a short interest of 1.70%.
CPSJ Short Interest - Official
Short Interest
CPSJ Short Position Change - Official
Short Position Change
CPSJ 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 | 1.70 | 30,644 | 16.83 | +3,532 | +13.03 | 1,800,000 | 1,800,000 |
| 2026-08-31 | 1.51 | 27,112 | 20.07 | -44,326 | -62.05 | 1,800,000 | 1,800,000 |
| 2026-08-14 | 4.20 | 71,438 | 9.41 | +5,112 | +7.71 | 1,700,000 | 1,700,000 |
| 2026-07-31 | 3.90 | 66,326 | 5.15 | +39,886 | +150.85 | 1,700,000 | 1,700,000 |
| 2026-07-15 | 1.76 | 26,440 | 1.00 | +26,310 | +20,238.46 | 1,500,000 | 1,500,000 |
| 2026-06-30 | 0.01 | 130 | 1.00 | 0 | 0.00 | 1,500,000 | 1,500,000 |
| 2026-06-15 | 0.01 | 130 | 1.00 | 0 | 0.00 | 1,500,000 | 1,500,000 |
| 2026-05-15 | 0.01 | 130 | 1.00 | -2,530 | -95.11 | 1,500,000 | 1,500,000 |
| 2026-04-30 | 0.18 | 2,660 | 2.42 | +544 | +25.71 | 1,500,000 | 1,500,000 |
| 2026-04-15 | 0.14 | 2,116 | 1.21 | 0 | 0.00 | 1,500,000 | 1,500,000 |
| 2026-03-31 | 0.14 | 2,116 | 5.19 | -2 | -0.09 | 1,500,000 | 1,500,000 |
| 2026-03-13 | 0.14 | 2,118 | 1.31 | -278 | -11.60 | 1,500,000 | 1,500,000 |
| 2026-02-27 | 0.16 | 2,396 | 1.61 | -326 | -11.98 | 1,500,000 | 1,500,000 |
| 2026-02-13 | 0.18 | 2,722 | 1.00 | +2,721 | +272,100.00 | 1,500,000 | 1,500,000 |
| 2025-12-31 | 0.00 | 1 | 1.00 | -421 | -99.76 | 1,600,000 | 1,600,000 |
| 2025-12-15 | 0.03 | 422 | 1.00 | -298 | -41.39 | 1,600,000 | 1,600,000 |
| 2025-11-28 | 0.05 | 720 | 1.00 | +157 | +27.89 | 1,600,000 | 1,600,000 |
| 2025-11-14 | 0.04 | 563 | 1.00 | -1,255 | -69.03 | 1,600,000 | 1,600,000 |
| 2025-10-15 | 0.11 | 1,818 | 1.00 | +1,440 | +380.95 | 1,600,000 | 1,600,000 |
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.