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LOOMIS SAYLES & CO L P: REGN position timeline

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

LOOMIS SAYLES & CO L P held 1,859,172 REGN 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 1,859,172 shares
    Change vs previous 13F -53,138 shares

    1.45% of the 13F portfolio, value $1,159,268,030.

    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 1,912,310 shares
    Change vs previous 13F -22,016 shares

    1.99% of the 13F portfolio, value $1,477,527,279.

    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 1,934,326 shares
    Change vs previous 13F -45,127 shares

    1.8% of the 13F portfolio, value $1,493,048,247.

    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 1,979,453 shares
    Change vs previous 13F +38,383 shares

    1.32% of the 13F portfolio, value $1,112,987,056.

    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 1,941,070 shares
    Change vs previous 13F +305,089 shares

    1.28% of the 13F portfolio, value $1,019,061,568.

    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 1,635,981 shares
    Change vs previous 13F +60,632 shares

    1.5% of the 13F portfolio, value $1,037,588,000.

    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 1,575,349 shares
    Change vs previous 13F +393,997 shares

    1.42% of the 13F portfolio, value $1,122,168,000.

    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 1,181,352 shares
    Change vs previous 13F not available

    1.63% of the 13F portfolio, value $1,241,884,000.

    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).