Skip to content
Disclosery

Portolan Capital Management, LLC: VIRT position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Portolan Capital Management, LLC on VIRT, newest first. How the timeline and the estimate are built.

Portolan Capital Management, LLC held 2,142,215 VIRT shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 2,142,215 shares
    Change vs previous 13F +930,328 shares

    4.78% of the 13F portfolio, value $127,611,748.

    13F-HR 0001104659-26-096980 filed by Portolan Capital Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  2. period ended2026-03-31
    13F 1,211,887 shares
    Change vs previous 13F +835,604 shares

    2.84% of the 13F portfolio, value $53,298,790.

    13F-HR 0001104659-26-062488 filed by Portolan Capital Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  3. period ended2025-12-31
    13F 376,283 shares
    Change vs previous 13F +376,283 shares

    0.67% of the 13F portfolio, value $12,537,750.

    13F-HR 0001104659-26-016304 filed by Portolan Capital Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  4. period ended2025-09-30
    13F 0 shares
    Change vs previous 13F -273,367 shares

    13F-HR 0001104659-25-111284 filed by Portolan Capital Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

    Exited: the 13F for this period no longer lists the position.

  5. period ended2025-06-30
    13F 273,367 shares
    Change vs previous 13F -115,477 shares

    0.77% of the 13F portfolio, value $12,244,108.

    13F-HR 0001104659-25-077571 filed by Portolan Capital Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  6. period ended2025-03-31
    13F 388,844 shares
    Change vs previous 13F -139,763 shares

    1.13% of the 13F portfolio, value $14,822,733.

    13F-HR 0001104659-25-049320 filed by Portolan Capital Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  7. period ended2024-12-31
    13F 528,607 shares
    Change vs previous 13F +137,335 shares

    1.27% of the 13F portfolio, value $18,860,698.

    13F-HR 0001104659-25-012988 filed by Portolan Capital Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  8. period ended2024-09-30
    13F 391,272 shares
    Change vs previous 13F not available

    0.86% of the 13F portfolio, value $11,918,145.

    13F-HR 0001104659-24-118686 filed by Portolan Capital Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).