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Disclosery

S&CO INC: WAT position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of S&CO INC on WAT, newest first. How the timeline and the estimate are built.

S&CO INC held 11,417 WAT shares at 2026-06-30 per its 13F-HR filed 2026-08-06.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 11,417 shares
    Change vs previous 13F 0 shares

    0.25% of the 13F portfolio, value $4,281,000.

    13F-HR 0001082461-26-000003 filed by S&CO INC
    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 11,417 shares
    Change vs previous 13F +463 shares

    0.21% of the 13F portfolio, value $3,399,000.

    13F-HR 0001082461-26-000002 filed by S&CO INC
    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 10,954 shares
    Change vs previous 13F -130 shares

    0.26% of the 13F portfolio, value $4,160,000.

    13F-HR 0001082461-26-000001 filed by S&CO INC
    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 11,084 shares
    Change vs previous 13F -1,500 shares

    0.2% of the 13F portfolio, value $3,323,000.

    13F-HR 0001082461-25-000005 filed by S&CO INC
    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 12,584 shares
    Change vs previous 13F +120 shares

    0.28% of the 13F portfolio, value $4,392,000.

    13F-HR 0001082461-25-000003 filed by S&CO INC
    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 12,464 shares
    Change vs previous 13F -812 shares

    0.31% of the 13F portfolio, value $4,593,000.

    13F-HR 0001082461-25-000002 filed by S&CO INC
    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 13,276 shares
    Change vs previous 13F +130 shares

    0.33% of the 13F portfolio, value $4,925,000.

    13F-HR 0001082461-25-000001 filed by S&CO INC
    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 13,146 shares
    Change vs previous 13F not available

    0.31% of the 13F portfolio, value $4,731,000.

    13F-HR 0001082461-24-000005 filed by S&CO INC
    Filed (acceptance time not in the bulk data set), ingested

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