Federal Data Hub › SEC Fails-to-Deliver · JSON
Fails-to-deliver · CUSIP 12811T753
Over the rolling 12-month window, securities of CALAMOS ETF TR S&P 500 STRUCTU failed to deliver in the NSCC's Continuous Net Settlement system on 32 settlement days, totaling 181,180 fail shares and peaking at 31,179 shares on 2026-04-08. Persistent or spiking fails-to-deliver can signal delivery stress, naked short selling, or operational settlement problems.
| Settlement date | Fail shares | Price |
|---|---|---|
| 2026-08-20 | 172 | $27.15 |
| 2026-08-19 | 173 | $27.14 |
| 2026-08-18 | 173 | $27.14 |
| 2026-08-17 | 402 | $27.15 |
| 2026-08-13 | 67 | $27.12 |
| 2026-08-12 | 1,479 | $27.11 |
| 2026-08-04 | 89 | $27.06 |
| 2026-08-03 | 6,127 | $27.03 |
| 2026-07-31 | 6,926 | $27.01 |
| 2026-07-30 | 29 | $26.93 |
| 2026-07-29 | 29 | $26.99 |
| 2026-07-22 | 812 | $26.98 |
| 2026-07-20 | 760 | $26.99 |
| 2026-07-17 | 15,664 | $26.99 |
| 2026-07-16 | 16,921 | $27.03 |
| 2026-07-15 | 16,688 | $26.98 |
| 2026-07-14 | 14,528 | $26.96 |
| 2026-07-10 | 4,952 | $26.95 |
| 2026-07-09 | 21,962 | $26.93 |
| 2026-06-16 | 60 | $26.92 |
| 2026-06-15 | 83 | $26.86 |
| 2026-06-12 | 2,493 | $26.87 |
| 2026-06-11 | 3,310 | $26.85 |
| 2026-06-10 | 2,994 | $26.86 |
| 2026-06-09 | 1,066 | $26.87 |
| 2026-06-08 | 2,304 | $26.88 |
| 2026-06-05 | 948 | $26.93 |
| 2026-06-04 | 948 | $26.90 |
| 2026-06-03 | 7 | $26.90 |
| 2026-06-02 | 21 | $26.89 |
| 2026-06-01 | 237 | $26.90 |
| 2026-05-29 | 231 | $26.88 |
| 2026-05-14 | 1,197 | $26.82 |
| 2026-05-13 | 2,215 | $26.80 |
| 2026-05-04 | 69 | $26.76 |
| 2026-05-01 | 2,173 | $26.75 |
| 2026-04-23 | 35 | $26.71 |
| 2026-04-21 | 1,188 | $26.70 |
| 2026-04-20 | 10 | $26.72 |
| 2026-04-17 | 9,240 | $26.67 |
| 2026-04-16 | 9,201 | $26.65 |
| 2026-04-09 | 2,511 | $26.58 |
| 2026-04-08 | 31,179 | $26.47 |
| 2026-04-07 | 27,514 | $26.47 |
| 2026-04-06 | 23,710 | $26.46 |
| 2026-04-02 | 17,358 | $26.46 |
| 2026-02-04 | 257 | $26.20 |
| 2026-02-03 | 257 | $26.21 |
| 2026-02-02 | 497 | $26.17 |
| 2026-01-30 | 856 | $26.19 |
| 2026-01-29 | 939 | $26.19 |
| 2026-01-28 | 199 | $26.18 |
| 2026-01-14 | 8 | $26.12 |
| 2026-01-13 | 8 | $26.12 |
| 2025-12-24 | 100 | $26.05 |
| 2025-06-25 | 300 | $25.24 |
| 2025-06-16 | 400 | $25.10 |
| 2025-06-12 | 1,237 | $25.16 |
| 2025-06-11 | 2,408 | $25.14 |
| 2025-06-10 | 2,408 | $25.13 |
| 2025-06-06 | 11,405 | $25.09 |
| 2025-06-05 | 16,035 | $25.10 |
| 2025-06-04 | 16,035 | $25.11 |
A "fail-to-deliver" occurs when a party in a securities trade does not deliver the shares by the settlement date. The SEC publishes twice-monthly files of CNS fails-to-deliver by security. This page aggregates the rolling 12-month window. CUSIP 12811T753 links to this security's other federal filings across the hub.
Source: SEC Fails-to-Deliver Data. License: CC0 1.0.