GAGNON SECURITIES LLC: PROF position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of GAGNON SECURITIES LLC on PROF, newest first. How the timeline and the estimate are built.

GAGNON SECURITIES LLC held 2,922,260 PROF shares at 2026-06-30 per its 13F-HR filed 2026-08-05.

the latest 13F is the newest step

period ended2026-06-30
13F 2,922,260 shares
Change vs previous 13F +15,750 shares
2.87% of the 13F portfolio, value $19,433,029.
13F-HR 0001019056-26-000123 filed by GAGNON SECURITIES LLC
Filed 2026-08-05 (acceptance time not in the bulk data set), ingested 2026-10-06 09:57:27 UTC
- GAGNON SECURITIES LLC: 1,960,074 shares
- Gagnon Advisors, LLC: 962,186 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2026-03-31
13F 2,906,510 shares
Change vs previous 13F +263 shares
3.31% of the 13F portfolio, value $18,834,184.
13F-HR 0001019056-26-000076 filed by GAGNON SECURITIES LLC
Filed 2026-04-22 (acceptance time not in the bulk data set), ingested 2026-10-06 09:58:43 UTC
- GAGNON SECURITIES LLC: 1,944,324 shares
- Gagnon Advisors, LLC: 962,186 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-12-31
13F 2,906,247 shares
Change vs previous 13F +276,536 shares
3.53% of the 13F portfolio, value $22,872,164.
13F-HR 0001019056-26-000037 filed by GAGNON SECURITIES LLC
Filed 2026-02-13 (acceptance time not in the bulk data set), ingested 2026-10-07 03:01:36 UTC
- GAGNON SECURITIES LLC: 1,944,061 shares
- Gagnon Advisors, LLC: 962,186 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-09-30
13F 2,629,711 shares
Change vs previous 13F -16,873 shares
1.95% of the 13F portfolio, value $12,859,287.
13F-HR 0001019056-25-000228 filed by GAGNON SECURITIES LLC
Filed 2025-11-03 (acceptance time not in the bulk data set), ingested 2026-10-07 03:02:25 UTC
- GAGNON SECURITIES LLC: 1,733,040 shares
- Gagnon Advisors, LLC: 896,671 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-06-30
13F 2,646,584 shares
Change vs previous 13F +52,233 shares
2.44% of the 13F portfolio, value $15,614,846.
13F-HR 0001019056-25-000196 filed by GAGNON SECURITIES LLC
Filed 2025-07-23 (acceptance time not in the bulk data set), ingested 2026-10-07 18:23:11 UTC
- GAGNON SECURITIES LLC: 1,749,913 shares
- Gagnon Advisors, LLC: 896,671 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2025-03-31
13F 2,594,351 shares
Change vs previous 13F +45,149 shares
2.53% of the 13F portfolio, value $15,099,123.
13F-HR 0001019056-25-000173 filed by GAGNON SECURITIES LLC
Filed 2025-05-09 (acceptance time not in the bulk data set), ingested 2026-10-07 18:25:06 UTC
- GAGNON SECURITIES LLC: 1,697,680 shares
- Gagnon Advisors, LLC: 896,671 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2024-12-31
13F 2,549,202 shares
Change vs previous 13F +334,729 shares
2.93% of the 13F portfolio, value $19,144,507.
13F-HR 0001019056-25-000034 filed by GAGNON SECURITIES LLC
Filed 2025-01-24 (acceptance time not in the bulk data set), ingested 2026-10-07 18:25:55 UTC
- GAGNON SECURITIES LLC: 1,652,531 shares
- Gagnon Advisors, LLC: 896,671 shares
Acceptance time not in the bulk data set (spec §4.2).
period ended2024-09-30
13F 2,214,473 shares
Change vs previous 13F not available
2.67% of the 13F portfolio, value $17,627,205.
13F-HR 0001019056-24-000316 filed by GAGNON SECURITIES LLC
Filed 2024-11-12 (acceptance time not in the bulk data set), ingested 2026-10-07 18:26:56 UTC
- GAGNON SECURITIES LLC: 1,467,247 shares
- Gagnon Advisors, LLC: 747,226 shares
Acceptance time not in the bulk data set (spec §4.2).