SPRO
Spero Therapeutics, Inc. Common Stock
stockNASDAQ
At CloseOct 2, 2026 3:59:56 PM EDT
1.19USD-5.556%(-0.07)906,916
Pre-marketOct 2, 2026 8:37:30 AM EDT
1.25USD-0.794%(-0.01)
After-hoursOct 2, 2026 4:01:30 PM EDT
1.20USD+0.840%(+0.01)
On 2026-09-14 there were 0 FTDs. The average number of FTDs per day for September 2026 is 0.
SPRO Fails-to-Deliver (FTDs)
Fails-to-Deliver
SPRO Fails-to-Deliver
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| Trade Date (T)1 | Fails-to- Deliver2 | FTD Change | Trade Vol. | Settlement Date (T+B)4 | Closing Deadline (T+35C)5 | Price3 | $ Notional |
|---|---|---|---|---|---|---|---|
| 2026-09-11 | — | 0 | 310.6K | 2026-09-14 | 2026-10-16 | 1.13 | 0 |
| 2026-09-10 | — | 0 | 569.3K | 2026-09-11 | 2026-10-15 | 1.12 | 0 |
| 2026-09-09 | — | 0 | 367.1K | 2026-09-10 | 2026-10-14 | 1.17 | 0 |
| 2026-09-08 | — | 0 | 348.6K | 2026-09-09 | 2026-10-13 | 1.19 | 0 |
| 2026-09-04 | — | 0 | 363.0K | 2026-09-08 | 2026-10-09 | 1.21 | 0 |
| 2026-09-03 | — | 0 | 203.3K | 2026-09-04 | 2026-10-08 | 1.22 | 0 |
| 2026-09-02 | — | 0 | 169.5K | 2026-09-03 | 2026-10-07 | 1.22 | 0 |
| 2026-09-01 | — | 0 | 385.4K | 2026-09-02 | 2026-10-06 | 1.20 | 0 |
| 2026-08-31 | — | 0 | 338.5K | 2026-09-01 | 2026-10-05 | 1.22 | 0 |
| 2026-08-28 | — | 0 | 312.8K | 2026-08-31 | 2026-10-02 | 1.20 | 0 |
| 2026-08-27 | — | 0 | 538.5K | 2026-08-28 | 2026-10-01 | 1.21 | 0 |
| 2026-08-26 | — | 0 | 154.8K | 2026-08-27 | 2026-09-30 | 1.22 | 0 |
| 2026-08-25 | — | -15,213 | 645.5K | 2026-08-26 | 2026-09-29 | 1.23 | 0 |
| 2026-08-24 | 15,213 | +15,213 | 367.3K | 2026-08-25 | 2026-09-28 | 1.22 | 18,560 |
| 2026-08-21 | — | 0 | 359.1K | 2026-08-24 | 2026-09-25 | 1.22 | 0 |
| 2026-08-20 | — | -17 | 558.8K | 2026-08-21 | 2026-09-24 | 1.21 | 0 |
| 2026-08-19 | 17 | +17 | 480.2K | 2026-08-20 | 2026-09-23 | 1.23 | 21 |
| 2026-08-18 | — | 0 | 477.4K | 2026-08-19 | 2026-09-22 | 1.20 | 0 |
| 2026-08-17 | — | 0 | 299.0K | 2026-08-18 | 2026-09-21 | 1.19 | 0 |
| 2026-08-14 | — | 0 | 744.5K | 2026-08-17 | 2026-09-18 | 1.23 | 0 |
| 2026-08-13 | — | 0 | 1.3M | 2026-08-14 | 2026-09-17 | 1.24 | 0 |
| 2026-08-12 | — | -742 | 774.6K | 2026-08-13 | 2026-09-16 | 1.19 | 0 |
| 2026-08-11 | 742 | +714 | 364.1K | 2026-08-12 | 2026-09-15 | 1.23 | 913 |
| 2026-08-10 | 28 | -26,844 | 351.0K | 2026-08-11 | 2026-09-14 | 1.23 | 34 |
| 2026-08-07 | 26,872 | +26,872 | 459.0K | 2026-08-10 | 2026-09-11 | 1.26 | 33,859 |
Historical data is split-adjusted.
1 Trade Date is calculated from the Settlement Date.
2 Fails to deliver on a given day are a CUMULATIVE number of all fails outstanding until that day, plus new fails that occur that day, less fails that settle that day. A dash (—) indicates no FTDs were reported that day. It’s been shown that the SEC withholds the FTD report for two weeks, and there are often high-volume days with no reported FTDs, so it’s unclear if missing days truly indicate 0 FTDs.
3 Closing price on the Trade Date. The FTD file contains the closing price on the day previous to settlement.
4 As of May 28, 2024, the standard for settlement is next business day after a trade (T+1B). Before that, it was trade date plus two business days (T+2B).
5 RegSHO IV. 3. A broker-dealer has up to 35 calendar days following the trade date to close out the failure to deliver position by purchasing securities of like kind and quantity. Analysis of the T+35 cycle.