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LOOMIS SAYLES & CO L P: VRTX position timeline

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

LOOMIS SAYLES & CO L P held 3,920,953 VRTX 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 3,920,953 shares
    Change vs previous 13F -82,868 shares

    2.44% of the 13F portfolio, value $1,947,654,924.

    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 4,003,821 shares
    Change vs previous 13F -29,704 shares

    2.41% of the 13F portfolio, value $1,787,866,287.

    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 4,033,525 shares
    Change vs previous 13F -88,603 shares

    2.2% of the 13F portfolio, value $1,828,638,685.

    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 4,122,128 shares
    Change vs previous 13F +308,750 shares

    1.92% of the 13F portfolio, value $1,614,390,030.

    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 3,813,378 shares
    Change vs previous 13F +65,047 shares

    2.13% of the 13F portfolio, value $1,697,715,954.

    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 3,748,331 shares
    Change vs previous 13F -24,458 shares

    2.63% of the 13F portfolio, value $1,817,266,000.

    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 3,772,789 shares
    Change vs previous 13F +704,575 shares

    1.92% of the 13F portfolio, value $1,519,302,000.

    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 3,068,214 shares
    Change vs previous 13F not available

    1.87% of the 13F portfolio, value $1,426,965,000.

    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).