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PRICE T ROWE ASSOCIATES INC /MD/: IONS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of PRICE T ROWE ASSOCIATES INC /MD/ on IONS, newest first. How the timeline and the estimate are built.

PRICE T ROWE ASSOCIATES INC /MD/ held 3,184,500 IONS 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 3,184,500 shares
    Change vs previous 13F +159,249 shares

    0.03% of the 13F portfolio, value $252,500,000.

    13F-HR 0000080255-26-000519 filed by PRICE T ROWE ASSOCIATES INC /MD/
    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 3,025,251 shares
    Change vs previous 13F +37,411 shares

    0.03% of the 13F portfolio, value $227,167,000.

    13F-HR 0000080255-26-000381 filed by PRICE T ROWE ASSOCIATES INC /MD/
    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 2,987,840 shares
    Change vs previous 13F +258,155 shares

    0.03% of the 13F portfolio, value $236,370,000.

    13F-HR 0000080255-26-000231 filed by PRICE T ROWE ASSOCIATES INC /MD/
    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 2,729,685 shares
    Change vs previous 13F -396,388 shares

    0.02% of the 13F portfolio, value $178,577,000.

    13F-HR 0000080255-25-000782 filed by PRICE T ROWE ASSOCIATES INC /MD/
    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 3,126,073 shares
    Change vs previous 13F -138,961 shares

    0.01% of the 13F portfolio, value $123,512,000.

    13F-HR 0000080255-25-000547 filed by PRICE T ROWE ASSOCIATES INC /MD/
    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 3,265,034 shares
    Change vs previous 13F -561,905 shares

    0.01% of the 13F portfolio, value $98,507,000.

    13F-HR 0000080255-25-000284 filed by PRICE T ROWE ASSOCIATES INC /MD/
    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 3,826,939 shares
    Change vs previous 13F -383,233 shares

    0.02% of the 13F portfolio, value $133,791,000.

    13F-HR 0000080255-25-000216 filed by PRICE T ROWE ASSOCIATES INC /MD/
    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 4,210,172 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $168,661,000.

    13F-HR 0001897612-24-002014 filed by PRICE T ROWE ASSOCIATES INC /MD/
    Filed (acceptance time not in the bulk data set), ingested

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