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SEI INVESTMENTS CO: ATRC position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of SEI INVESTMENTS CO on ATRC, newest first. How the timeline and the estimate are built.

SEI INVESTMENTS CO held 281,310 ATRC 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 281,310 shares
    Change vs previous 13F +20,522 shares

    0.01% of the 13F portfolio, value $7,871,117.

    13F-HR 0002048251-26-006553 filed by SEI INVESTMENTS CO
    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 260,788 shares
    Change vs previous 13F +102,485 shares

    0.01% of the 13F portfolio, value $7,440,318.

    13F-HR 0002048251-26-003739 filed by SEI INVESTMENTS CO
    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 158,303 shares
    Change vs previous 13F +32,062 shares

    0.01% of the 13F portfolio, value $6,262,459.

    13F-HR 0000350894-26-000005 filed by SEI INVESTMENTS CO
    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 126,241 shares
    Change vs previous 13F -55,276 shares

    <0.01% of the 13F portfolio, value $4,449,943.

    13F-HR 0002048251-25-002343 filed by SEI INVESTMENTS CO
    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 181,517 shares
    Change vs previous 13F +23,983 shares

    0.01% of the 13F portfolio, value $5,948,276.

    13F-HR 0001041062-25-000162 filed by SEI INVESTMENTS CO
    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/A 157,534 shares
    Change vs previous 13F +50,244 shares

    0.01% of the 13F portfolio, value $5,082,068.

    13F-HR/A 0001041062-25-000106 filed by SEI INVESTMENTS CO
    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 107,290 shares
    Change vs previous 13F +6,152 shares

    <0.01% of the 13F portfolio, value $3,278,938.

    13F-HR 0001041062-25-000019 filed by SEI INVESTMENTS CO
    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 101,138 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $2,835,912.

    13F-HR 0001041062-24-000165 filed by SEI INVESTMENTS CO
    Filed (acceptance time not in the bulk data set), ingested

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