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T. Rowe Price Investment Management, Inc.: MASI position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of T. Rowe Price Investment Management, Inc. on MASI, newest first. How the timeline and the estimate are built.

T. Rowe Price Investment Management, Inc. held 0 MASI shares at 2026-03-31 per its 13F-HR filed 2026-05-15.

the latest 13F is the newest step

  1. period ended2026-03-31
    13F 0 shares
    Change vs previous 13F -2,330,158 shares

    13F-HR 0001897612-26-000460 filed by T. Rowe Price Investment Management, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  2. period ended2025-12-31
    13F/A 2,330,158 shares
    Change vs previous 13F +203,395 shares

    0.19% of the 13F portfolio, value $303,061,000.

    13F-HR/A 0001897612-26-000299 filed by T. Rowe Price Investment Management, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2025-09-30
    13F 2,126,763 shares
    Change vs previous 13F -373,381 shares

    0.19% of the 13F portfolio, value $313,804,000.

    13F-HR 0001897612-25-000511 filed by T. Rowe Price Investment Management, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-06-30
    13F 2,500,144 shares
    Change vs previous 13F +826,892 shares

    0.27% of the 13F portfolio, value $420,575,000.

    13F-HR 0000080255-25-000548 filed by T. Rowe Price Investment Management, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-03-31
    13F 1,673,252 shares
    Change vs previous 13F +10,876 shares

    0.18% of the 13F portfolio, value $278,764,000.

    13F-HR 0000080255-25-000283 filed by T. Rowe Price Investment Management, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2024-12-31
    13F 1,662,376 shares
    Change vs previous 13F +135,888 shares

    0.17% of the 13F portfolio, value $274,791,000.

    13F-HR 0000080255-25-000217 filed by T. Rowe Price Investment Management, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2024-09-30
    13F 1,526,488 shares
    Change vs previous 13F not available

    0.12% of the 13F portfolio, value $203,527,000.

    13F-HR 0001897612-24-002015 filed by T. Rowe Price Investment Management, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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