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LOOMIS SAYLES & CO L P: ALNY position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of LOOMIS SAYLES & CO L P on ALNY, newest first. How the timeline and the estimate are built.

LOOMIS SAYLES & CO L P held 580,187 ALNY 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 580,187 shares
    Change vs previous 13F +68,090 shares

    0.22% of the 13F portfolio, value $174,653,692.

    13F-HR 0000312348-26-000034 filed by LOOMIS SAYLES & CO 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 512,097 shares
    Change vs previous 13F +23,200 shares

    0.23% of the 13F portfolio, value $169,437,534.

    13F-HR 0000312348-26-000026 filed by LOOMIS SAYLES & CO 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 488,897 shares
    Change vs previous 13F -11,775 shares

    0.23% of the 13F portfolio, value $194,409,892.

    13F-HR 0000312348-26-000014 filed by LOOMIS SAYLES & CO 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 500,672 shares
    Change vs previous 13F +13,344 shares

    0.27% of the 13F portfolio, value $228,306,432.

    13F-HR 0000312348-25-000035 filed by LOOMIS SAYLES & CO 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 487,328 shares
    Change vs previous 13F -10,156 shares

    0.2% of the 13F portfolio, value $158,912,788.

    13F-HR 0000312348-25-000028 filed by LOOMIS SAYLES & CO 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 497,484 shares
    Change vs previous 13F -5,561 shares

    0.19% of the 13F portfolio, value $134,330,000.

    13F-HR 0000312348-25-000021 filed by LOOMIS SAYLES & CO 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 503,045 shares
    Change vs previous 13F -22,258 shares

    0.15% of the 13F portfolio, value $118,372,000.

    13F-HR 0000312348-25-000014 filed by LOOMIS SAYLES & CO 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 525,303 shares
    Change vs previous 13F not available

    0.19% of the 13F portfolio, value $144,474,000.

    13F-HR 0000312348-24-000037 filed by LOOMIS SAYLES & CO L P
    Filed (acceptance time not in the bulk data set), ingested

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