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MARTINGALE ASSET MANAGEMENT L P: AMGN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of MARTINGALE ASSET MANAGEMENT L P on AMGN, newest first. How the timeline and the estimate are built.

MARTINGALE ASSET MANAGEMENT L P held 62,656 AMGN shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 62,656 shares
    Change vs previous 13F -1,080 shares

    0.54% of the 13F portfolio, value $22,688,991.

    13F-HR 0000936944-26-000006 filed by MARTINGALE ASSET MANAGEMENT L P
    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 63,736 shares
    Change vs previous 13F +2,690 shares

    0.56% of the 13F portfolio, value $22,425,512.

    13F-HR 0000936944-26-000003 filed by MARTINGALE ASSET MANAGEMENT L P
    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 61,046 shares
    Change vs previous 13F +444 shares

    0.51% of the 13F portfolio, value $19,980,967.

    13F-HR 0000936944-26-000002 filed by MARTINGALE ASSET MANAGEMENT L P
    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 60,602 shares
    Change vs previous 13F -6,168 shares

    0.43% of the 13F portfolio, value $17,101,885.

    13F-HR 0000936944-25-000010 filed by MARTINGALE ASSET MANAGEMENT L P
    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 66,770 shares
    Change vs previous 13F -126 shares

    0.46% of the 13F portfolio, value $18,642,852.

    13F-HR 0000936944-25-000008 filed by MARTINGALE ASSET MANAGEMENT L P
    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 66,896 shares
    Change vs previous 13F -7,434 shares

    0.53% of the 13F portfolio, value $20,841,449.

    13F-HR 0000936944-25-000005 filed by MARTINGALE ASSET MANAGEMENT L P
    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 74,330 shares
    Change vs previous 13F -3,021 shares

    0.47% of the 13F portfolio, value $19,373,372.

    13F-HR 0000936944-25-000003 filed by MARTINGALE ASSET MANAGEMENT L P
    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 77,351 shares
    Change vs previous 13F not available

    0.57% of the 13F portfolio, value $24,923,266.

    13F-HR 0000936944-24-000007 filed by MARTINGALE ASSET MANAGEMENT L P
    Filed (acceptance time not in the bulk data set), ingested

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