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VANGUARD GROUP INC: KOS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of VANGUARD GROUP INC on KOS, newest first. How the timeline and the estimate are built.

VANGUARD GROUP INC held 23,188,592 KOS shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 23,188,592 shares
    Change vs previous 13F +4,097,536 shares

    <0.01% of the 13F portfolio, value $48,927,929.

    13F-HR 0002100121-26-001018 filed by VANGUARD PORTFOLIO MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

    • VANGUARD FIDUCIARY TRUST CO: 3,481,976 shares
    • Vanguard Investments Australia, Ltd.: 146,482 shares
    • VANGUARD ASSET MANAGEMENT, Ltd: 392,801 shares
    • Vanguard Personalized Indexing Management, LLC: 64,488 shares
    • Vanguard Global Advisers, LLC: 289,665 shares
    • VANGUARD CAPITAL MANAGEMENT LLC: 6,812,762 shares
    • VANGUARD PORTFOLIO MANAGEMENT LLC: 12,000,418 shares

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

  2. period ended2026-03-31
    13F/A 19,091,056 shares
    Change vs previous 13F +4,238,675 shares

    <0.01% of the 13F portfolio, value $53,073,136.

    13F-HR 0002100121-26-000861 filed by VANGUARD PORTFOLIO MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

    • VANGUARD FIDUCIARY TRUST CO: 3,232,465 shares
    • Vanguard Investments Australia, Ltd.: 146,482 shares
    • VANGUARD ASSET MANAGEMENT, Ltd: 392,801 shares
    • Vanguard Personalized Indexing Management, LLC: 47,175 shares
    • Vanguard Global Advisers, LLC: 230,640 shares
    • VANGUARD CAPITAL MANAGEMENT LLC: 6,422,390 shares
    • VANGUARD PORTFOLIO MANAGEMENT LLC: 8,619,103 shares

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

  3. period ended2025-12-31
    13F 14,852,381 shares
    Change vs previous 13F +504,767 shares

    <0.01% of the 13F portfolio, value $13,471,117.

    13F-HR 0000102909-26-000031 filed by VANGUARD GROUP INC
    Filed (acceptance time not in the bulk data set), ingested

    • VANGUARD GROUP INC: 14,836,244 shares
    • Vanguard Personalized Indexing Management, LLC: 16,137 shares

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

  4. period ended2025-09-30
    13F 14,347,614 shares
    Change vs previous 13F +286,521 shares

    <0.01% of the 13F portfolio, value $23,817,039.

    13F-HR 0000102909-25-000353 filed by VANGUARD GROUP INC
    Filed (acceptance time not in the bulk data set), ingested

    • VANGUARD GROUP INC: 14,320,597 shares
    • Vanguard Personalized Indexing Management, LLC: 27,017 shares

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

  5. period ended2025-06-30
    13F 14,061,093 shares
    Change vs previous 13F -59,097 shares

    <0.01% of the 13F portfolio, value $24,185,080.

    13F-HR 0001752724-25-185843 filed by VANGUARD GROUP INC
    Filed (acceptance time not in the bulk data set), ingested

    • VANGUARD GROUP INC: 14,034,004 shares
    • Vanguard Personalized Indexing Management, LLC: 27,089 shares

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

  6. period ended2025-03-31
    13F 14,120,190 shares
    Change vs previous 13F -807,151 shares

    <0.01% of the 13F portfolio, value $32,194,032.

    13F-HR 0001752724-25-099331 filed by VANGUARD GROUP INC
    Filed (acceptance time not in the bulk data set), ingested

    • VANGUARD GROUP INC: 14,099,989 shares
    • Vanguard Personalized Indexing Management, LLC: 20,201 shares

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

  7. period ended2024-12-31
    13F 14,927,341 shares
    Change vs previous 13F -7,951 shares

    <0.01% of the 13F portfolio, value $51,051,506.

    13F-HR 0001752724-25-022205 filed by VANGUARD GROUP INC
    Filed (acceptance time not in the bulk data set), ingested

    • VANGUARD GROUP INC: 14,899,220 shares
    • Vanguard Personalized Indexing Management, LLC: 28,121 shares

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

  8. period ended2024-09-30
    13F 14,935,292 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $60,189,227.

    13F-HR 0001752724-24-248565 filed by VANGUARD GROUP INC
    Filed (acceptance time not in the bulk data set), ingested

    • VANGUARD GROUP INC: 14,893,771 shares
    • Vanguard Personalized Indexing Management, LLC: 41,521 shares

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