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Portolan Capital Management, LLC: QTRX position timeline

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

Portolan Capital Management, LLC held 1,899,308 QTRX 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 1,899,308 shares
    Change vs previous 13F -1,046,515 shares

    0.31% of the 13F portfolio, value $8,205,011.

    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 2,945,823 shares
    Change vs previous 13F -1,579,730 shares

    0.55% of the 13F portfolio, value $10,369,297.

    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 4,525,553 shares
    Change vs previous 13F +265,702 shares

    1.54% of the 13F portfolio, value $28,782,517.

    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 4,259,851 shares
    Change vs previous 13F +626,229 shares

    1.25% of the 13F portfolio, value $23,130,991.

    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).

  5. period ended2025-06-30
    13F 3,633,622 shares
    Change vs previous 13F +670,225 shares

    1.52% of the 13F portfolio, value $24,163,586.

    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 2,963,397 shares
    Change vs previous 13F +375,573 shares

    1.47% of the 13F portfolio, value $19,291,714.

    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 2,587,824 shares
    Change vs previous 13F +67,138 shares

    1.85% of the 13F portfolio, value $27,508,569.

    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 2,520,686 shares
    Change vs previous 13F not available

    2.37% of the 13F portfolio, value $32,668,091.

    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).