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WELLINGTON MANAGEMENT GROUP LLP: STN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of WELLINGTON MANAGEMENT GROUP LLP on STN, newest first. How the timeline and the estimate are built.

WELLINGTON MANAGEMENT GROUP LLP held 172,715 STN 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 172,715 shares
    Change vs previous 13F -10,219 shares

    <0.01% of the 13F portfolio, value $11,908,356.

    13F-HR 0000902219-26-000311 filed by WELLINGTON MANAGEMENT GROUP LLP
    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 182,934 shares
    Change vs previous 13F +35,341 shares

    <0.01% of the 13F portfolio, value $15,764,143.

    13F-HR 0000902219-26-000209 filed by WELLINGTON MANAGEMENT GROUP LLP
    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 147,593 shares
    Change vs previous 13F +15,614 shares

    <0.01% of the 13F portfolio, value $13,945,826.

    13F-HR 0000902219-26-000103 filed by WELLINGTON MANAGEMENT GROUP LLP
    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 131,979 shares
    Change vs previous 13F -182,485 shares

    <0.01% of the 13F portfolio, value $14,236,542.

    13F-HR 0000902219-25-000462 filed by WELLINGTON MANAGEMENT GROUP LLP
    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 314,464 shares
    Change vs previous 13F -153,387 shares

    0.01% of the 13F portfolio, value $34,147,405.

    13F-HR 0000902219-25-000356 filed by WELLINGTON MANAGEMENT GROUP LLP
    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 467,851 shares
    Change vs previous 13F +60,225 shares

    0.01% of the 13F portfolio, value $38,773,852.

    13F-HR 0000902219-25-000242 filed by WELLINGTON MANAGEMENT GROUP LLP
    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/A 407,626 shares
    Change vs previous 13F +45,900 shares

    0.01% of the 13F portfolio, value $31,964,999.

    13F-HR 0000902219-25-000131 filed by WELLINGTON MANAGEMENT GROUP LLP
    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 361,726 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $29,121,223.

    13F-HR 0000902219-24-000498 filed by WELLINGTON MANAGEMENT GROUP LLP
    Filed (acceptance time not in the bulk data set), ingested

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