PTIX · Protagenic Therapeutics, Inc.\new · Short Interest
Substantial doubt about the company's ability to continue as a going concern.
“The Company does not have sufficient resources to fund its operations past twelve months from the date these consolidated financial statements are available to be issued. The Company expects that additional capital may be required during the next 12 months to continue executing its business plan and to meet its obligations as they become due. Accordingly, these conditions raise substantial doubt about the Company's ability to continue as a going concern within one year after the date these financial statements are issued.”View the 10-Q filed Aug 19, 2026
Shares sold short and not yet covered, reported twice monthly. Days to cover is the reported short position divided by average daily volume.
PTIX Latest Reported Short Interest
FINRA reported 13,165 PTIX shares sold short as of the July 31, 2026 settlement date, an increase of 9 shares. Days to cover was 1.00 based on FINRA's reported average daily volume.
Official FINRA short-interest data · share counts are restated for subsequent splits of this listing
Options positioning & squeeze sensitivity
Nearest expiration after today within 30 calendar days; same-day expirations and later maturities are excluded.
No active listed options were found.
Open interest has both a buyer and a seller; it does not reveal dealer hedge direction. Gross gamma sums both calls and puts without netting and uses a local 1% price-change approximation. It measures sensitivity, not predicted buying or a squeeze probability.
Assessment prepared 2026-10-21 05:21 UTC. Options model values may come from a cached snapshot; their original computation time is not supplied. Open interest has its own effective date.
Short Interest History
| Settlement Date | Current Position | Previous Position | Change | Days to Cover |
|---|---|---|---|---|
|
2026-10-30
Scheduled
FINRA publishes Nov 10
|
— | — | — | — |
|
2026-10-15
Scheduled
FINRA publishes Oct 26
|
— | — | — | — |
| 2026-07-31 | 13,165 | 13,156 | +9 | 1.00 |
| 2026-07-15 | 13,156 | 13,021 | +135 | 1.00 |
| 2026-06-30 | 13,021 | 12,996 | +25 | 1.65 |
| 2026-06-15 | 12,996 | 12,996 | 0 | 1.00 |
| 2026-05-29 | 12,996 | 12,996 | 0 | 3.52 |
| 2026-05-15 | 12,996 | 18,163 | -5,167 | 1.07 |
| 2026-04-30 | 18,163 | 14,150 | +4,013 | 1.00 |
| 2026-04-15 | 14,150 | 19,507 | -5,357 | 2.15 |
| 2026-03-31 | 19,507 | 22,064 | -2,557 | 1.92 |
| 2026-03-13 | 22,064 | 24,374 | -2,310 | 2.49 |
| 2026-02-27 | 24,374 | 19,470 | +4,904 | 1.30 |
| 2026-02-13 | 19,470 | 29,753 | -10,283 | 1.00 |
| 2026-01-30 | 29,753 | 35,563 | -5,810 | 1.83 |
| 2026-01-15 | 35,563 | 50,768 | -15,205 | 1.00 |
| 2025-12-31 | 50,768 | 61,712 | -10,944 | 1.00 |
| 2025-12-15 | 61,712 | 53,426 | +8,286 | 1.00 |
| 2025-11-28 | 53,426 | 56,970 | -3,544 | 1.00 |
| 2025-11-14 | 56,970 | 28,771 | +28,199 | 1.00 |
| 2025-10-31 | 28,771 | 1,482 | +27,289 | 1.00 |
Full FINRA short interest reporting calendar