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GILDER GAGNON HOWE & CO LLC: AMBQ position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of GILDER GAGNON HOWE & CO LLC on AMBQ, newest first. How the timeline and the estimate are built.

GILDER GAGNON HOWE & CO LLC held 159,623 AMBQ 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 159,623 shares
    Change vs previous 13F +50,046 shares

    0.15% of the 13F portfolio, value $14,094,711.

    13F-HR 0001172661-26-003462 filed by GILDER GAGNON HOWE & 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 109,577 shares
    Change vs previous 13F +15,832 shares

    0.03% of the 13F portfolio, value $2,784,352.

    13F-HR 0001172661-26-002064 filed by GILDER GAGNON HOWE & 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 93,745 shares
    Change vs previous 13F -2,003 shares

    0.03% of the 13F portfolio, value $2,671,733.

    13F-HR 0001172661-26-000858 filed by GILDER GAGNON HOWE & 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 95,748 shares
    Change vs previous 13F not available

    0.03% of the 13F portfolio, value $2,864,780.

    13F-HR 0001172661-25-004939 filed by GILDER GAGNON HOWE & CO LLC
    Filed (acceptance time not in the bulk data set), ingested

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