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ROYCE & ASSOCIATES LP: AMPH position timeline

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

ROYCE & ASSOCIATES LP held 294,758 AMPH 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 294,758 shares
    Change vs previous 13F -111,417 shares

    0.05% of the 13F portfolio, value $5,948,216.

    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 406,175 shares
    Change vs previous 13F +53,878 shares

    0.08% of the 13F portfolio, value $7,956,968.

    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 352,297 shares
    Change vs previous 13F -14,025 shares

    0.1% of the 13F portfolio, value $9,434,514.

    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 366,322 shares
    Change vs previous 13F +83,135 shares

    0.1% of the 13F portfolio, value $9,762,481.

    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 283,187 shares
    Change vs previous 13F +35,329 shares

    0.07% of the 13F portfolio, value $6,501,974.

    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 247,858 shares
    Change vs previous 13F +238,956 shares

    0.08% of the 13F portfolio, value $7,185,403.

    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 8,902 shares
    Change vs previous 13F -174 shares

    <0.01% of the 13F portfolio, value $330,531.

    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 9,076 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $440,458.

    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).