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Disclosery

SAMLYN CAPITAL, LLC: INSM position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of SAMLYN CAPITAL, LLC on INSM, newest first. How the timeline and the estimate are built.

SAMLYN CAPITAL, LLC held 732,568 INSM 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 732,568 shares
    Change vs previous 13F +315,363 shares

    1.29% of the 13F portfolio, value $78,106,400.

    13F-HR 0000919574-26-005397 filed by SAMLYN CAPITAL, LLC
    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 417,205 shares
    Change vs previous 13F +47,630 shares

    1.17% of the 13F portfolio, value $68,221,361.

    13F-HR 0000919574-26-003334 filed by SAMLYN CAPITAL, LLC
    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 369,575 shares
    Change vs previous 13F +76,932 shares

    1.03% of the 13F portfolio, value $64,320,833.

    13F-HR 0000919574-26-001124 filed by SAMLYN CAPITAL, LLC
    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 292,643 shares
    Change vs previous 13F +292,643 shares

    0.6% of the 13F portfolio, value $42,143,519.

    13F-HR 0000919574-25-006914 filed by SAMLYN CAPITAL, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-03-31
    13F 0 shares
    Change vs previous 13F -159,064 shares

    13F-HR 0000919574-25-003205 filed by SAMLYN CAPITAL, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  6. period ended2024-12-31
    13F 159,064 shares
    Change vs previous 13F -52,434 shares

    0.17% of the 13F portfolio, value $10,981,779.

    13F-HR 0000919574-25-001454 filed by SAMLYN CAPITAL, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2024-09-30
    13F 211,498 shares
    Change vs previous 13F not available

    0.25% of the 13F portfolio, value $15,439,354.

    13F-HR 0000919574-24-006670 filed by SAMLYN CAPITAL, LLC
    Filed (acceptance time not in the bulk data set), ingested

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