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ROYCE & ASSOCIATES LP: ATMU position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of ROYCE & ASSOCIATES LP on ATMU, newest first. How the timeline and the estimate are built.

ROYCE & ASSOCIATES LP held 995,247 ATMU 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 995,247 shares
    Change vs previous 13F +217,512 shares

    0.41% of the 13F portfolio, value $50,747,645.

    13F-HR 0000906304-26-000154 filed by ROYCE & ASSOCIATES LP
    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 777,735 shares
    Change vs previous 13F +109,923 shares

    0.44% of the 13F portfolio, value $44,152,016.

    13F-HR 0000906304-26-000094 filed by ROYCE & ASSOCIATES LP
    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 667,812 shares
    Change vs previous 13F +17,740 shares

    0.35% of the 13F portfolio, value $34,666,121.

    13F-HR 0000906304-26-000037 filed by ROYCE & ASSOCIATES LP
    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 650,072 shares
    Change vs previous 13F -22,948 shares

    0.29% of the 13F portfolio, value $29,311,746.

    13F-HR 0000906304-25-000248 filed by ROYCE & ASSOCIATES LP
    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 673,020 shares
    Change vs previous 13F +45,233 shares

    0.25% of the 13F portfolio, value $24,511,388.

    13F-HR 0000906304-25-000173 filed by ROYCE & ASSOCIATES LP
    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 627,787 shares
    Change vs previous 13F -16,159 shares

    0.25% of the 13F portfolio, value $23,058,617.

    13F-HR 0000906304-25-000113 filed by ROYCE & ASSOCIATES LP
    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 643,946 shares
    Change vs previous 13F -83,308 shares

    0.23% of the 13F portfolio, value $25,229,804.

    13F-HR 0000906304-25-000062 filed by ROYCE & ASSOCIATES LP
    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 727,254 shares
    Change vs previous 13F not available

    0.25% of the 13F portfolio, value $27,293,843.

    13F-HR 0000906304-24-000143 filed by ROYCE & ASSOCIATES LP
    Filed (acceptance time not in the bulk data set), ingested

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