Skip to content
Disclosery

Portolan Capital Management, LLC: SEI position timeline

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

Portolan Capital Management, LLC held 107,401 SEI 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 107,401 shares
    Change vs previous 13F +79,471 shares

    0.32% of the 13F portfolio, value $8,641,484.

    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 27,930 shares
    Change vs previous 13F +8,456 shares

    0.08% of the 13F portfolio, value $1,578,324.

    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 19,474 shares
    Change vs previous 13F -343,966 shares

    0.05% of the 13F portfolio, value $895,220.

    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 363,440 shares
    Change vs previous 13F not available

    0.79% of the 13F portfolio, value $14,526,697.

    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).