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BLAIR WILLIAM & CO/IL: AMLP position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of BLAIR WILLIAM & CO/IL on AMLP, newest first. How the timeline and the estimate are built.

BLAIR WILLIAM & CO/IL held 532,049 AMLP shares at 2026-06-30 per its 13F-HR filed 2026-08-11.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 532,049 shares
    Change vs previous 13F -2,834 shares

    0.07% of the 13F portfolio, value $27,586,759.

    13F-HR 0001104659-26-093821 filed by BLAIR WILLIAM & CO/IL
    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 534,883 shares
    Change vs previous 13F +4,293 shares

    0.08% of the 13F portfolio, value $28,156,231.

    13F-HR 0001104659-26-057897 filed by BLAIR WILLIAM & CO/IL
    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 530,590 shares
    Change vs previous 13F +3,489 shares

    0.07% of the 13F portfolio, value $24,948,339.

    13F-HR 0001104659-26-015563 filed by BLAIR WILLIAM & CO/IL
    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 527,101 shares
    Change vs previous 13F -4,716 shares

    0.07% of the 13F portfolio, value $24,736,832.

    13F-HR 0001104659-25-109927 filed by BLAIR WILLIAM & CO/IL
    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 531,817 shares
    Change vs previous 13F +10,001 shares

    0.07% of the 13F portfolio, value $25,984,597.

    13F-HR 0001104659-25-070274 filed by BLAIR WILLIAM & CO/IL
    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 521,816 shares
    Change vs previous 13F +17,623 shares

    0.08% of the 13F portfolio, value $27,103,146.

    13F-HR 0001104659-25-046545 filed by BLAIR WILLIAM & CO/IL
    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 504,193 shares
    Change vs previous 13F +10,879 shares

    0.07% of the 13F portfolio, value $24,281,950.

    13F-HR 0001104659-25-011872 filed by BLAIR WILLIAM & CO/IL
    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 493,314 shares
    Change vs previous 13F not available

    0.07% of the 13F portfolio, value $23,249,894.

    13F-HR 0001104659-24-116499 filed by BLAIR WILLIAM & CO/IL
    Filed (acceptance time not in the bulk data set), ingested

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