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FRONTIER CAPITAL MANAGEMENT CO LLC: MDB position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of FRONTIER CAPITAL MANAGEMENT CO LLC on MDB, newest first. How the timeline and the estimate are built.

FRONTIER CAPITAL MANAGEMENT CO LLC held 334,098 MDB 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 334,098 shares
    Change vs previous 13F +119,782 shares

    1.05% of the 13F portfolio, value $112,223,606.

    13F-HR 0001172661-26-003509 filed by FRONTIER CAPITAL MANAGEMENT CO 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 214,316 shares
    Change vs previous 13F -87,777 shares

    0.54% of the 13F portfolio, value $52,458,222.

    13F-HR 0001172661-26-002082 filed by FRONTIER CAPITAL MANAGEMENT CO 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 302,093 shares
    Change vs previous 13F +17,389 shares

    1.35% of the 13F portfolio, value $126,785,300.

    13F-HR 0001172661-26-000845 filed by FRONTIER CAPITAL MANAGEMENT CO 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 284,704 shares
    Change vs previous 13F -84,587 shares

    0.79% of the 13F portfolio, value $88,366,443.

    13F-HR 0001172661-25-004908 filed by FRONTIER CAPITAL MANAGEMENT CO 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 369,291 shares
    Change vs previous 13F -114,588 shares

    0.72% of the 13F portfolio, value $77,547,480.

    13F-HR 0001172661-25-003311 filed by FRONTIER CAPITAL MANAGEMENT CO 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 483,879 shares
    Change vs previous 13F +144,622 shares

    0.93% of the 13F portfolio, value $84,872,436.

    13F-HR 0001172661-25-002022 filed by FRONTIER CAPITAL MANAGEMENT CO 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 339,257 shares
    Change vs previous 13F +102,556 shares

    0.75% of the 13F portfolio, value $78,982,322.

    13F-HR 0001172661-25-001009 filed by FRONTIER CAPITAL MANAGEMENT CO 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 236,701 shares
    Change vs previous 13F not available

    0.6% of the 13F portfolio, value $63,992,007.

    13F-HR 0001172661-24-004972 filed by FRONTIER CAPITAL MANAGEMENT CO LLC
    Filed (acceptance time not in the bulk data set), ingested

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