Skip to content
Disclosery

Portolan Capital Management, LLC: OPRT position timeline

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

Portolan Capital Management, LLC held 0 OPRT shares at 2025-09-30 per its 13F-HR filed 2025-11-13.

the latest 13F is the newest step

  1. period ended2025-09-30
    13F 0 shares
    Change vs previous 13F -1,619,470 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.

  2. period ended2025-06-30
    13F 1,619,470 shares
    Change vs previous 13F +801,116 shares

    0.73% of the 13F portfolio, value $11,595,405.

    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).

  3. period ended2025-03-31
    13F 818,354 shares
    Change vs previous 13F not available

    0.34% of the 13F portfolio, value $4,492,763.

    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).