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VANGUARD GROUP INC: WLK position timeline

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

VANGUARD GROUP INC held 3,486,983 WLK 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 3,486,983 shares
    Change vs previous 13F -10,767 shares

    <0.01% of the 13F portfolio, value $254,549,759.

    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: 209,650 shares
    • Vanguard Investments Australia, Ltd.: 8,118 shares
    • VANGUARD ASSET MANAGEMENT, Ltd: 30,040 shares
    • Vanguard Personalized Indexing Management, LLC: 9,336 shares
    • Vanguard Global Advisers, LLC: 12,989 shares
    • VANGUARD CAPITAL MANAGEMENT LLC: 1,464,223 shares
    • VANGUARD PORTFOLIO MANAGEMENT LLC: 1,752,627 shares

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

  2. period ended2026-03-31
    13F/A 3,497,750 shares
    Change vs previous 13F -429,334 shares

    0.01% of the 13F portfolio, value $408,607,156.

    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: 205,684 shares
    • Vanguard Investments Australia, Ltd.: 9,932 shares
    • VANGUARD ASSET MANAGEMENT, Ltd: 33,358 shares
    • Vanguard Personalized Indexing Management, LLC: 9,463 shares
    • Vanguard Global Advisers, LLC: 13,911 shares
    • VANGUARD CAPITAL MANAGEMENT LLC: 1,455,594 shares
    • VANGUARD PORTFOLIO MANAGEMENT LLC: 1,769,808 shares

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

  3. period ended2025-12-31
    13F 3,927,084 shares
    Change vs previous 13F +478,109 shares

    <0.01% of the 13F portfolio, value $290,368,591.

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

    • VANGUARD GROUP INC: 3,917,329 shares
    • Vanguard Personalized Indexing Management, LLC: 9,755 shares

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

  4. period ended2025-09-30
    13F 3,448,975 shares
    Change vs previous 13F -83,880 shares

    <0.01% of the 13F portfolio, value $265,778,014.

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

    • VANGUARD GROUP INC: 3,439,631 shares
    • Vanguard Personalized Indexing Management, LLC: 9,344 shares

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

  5. period ended2025-06-30
    13F 3,532,855 shares
    Change vs previous 13F -25,720 shares

    <0.01% of the 13F portfolio, value $268,249,680.

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

    • VANGUARD GROUP INC: 3,522,810 shares
    • Vanguard Personalized Indexing Management, LLC: 10,045 shares

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

  6. period ended2025-03-31
    13F 3,558,575 shares
    Change vs previous 13F -326,322 shares

    0.01% of the 13F portfolio, value $355,964,256.

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

    • VANGUARD GROUP INC: 3,550,310 shares
    • Vanguard Personalized Indexing Management, LLC: 8,265 shares

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

  7. period ended2024-12-31
    13F 3,884,897 shares
    Change vs previous 13F +22,301 shares

    0.01% of the 13F portfolio, value $445,403,441.

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

    • VANGUARD GROUP INC: 3,877,973 shares
    • Vanguard Personalized Indexing Management, LLC: 6,924 shares

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

  8. period ended2024-09-30
    13F 3,862,596 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $580,509,554.

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

    • VANGUARD GROUP INC: 3,856,680 shares
    • Vanguard Personalized Indexing Management, LLC: 5,916 shares

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