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FRED ALGER MANAGEMENT, LLC: RGEN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of FRED ALGER MANAGEMENT, LLC on RGEN, newest first. How the timeline and the estimate are built.

FRED ALGER MANAGEMENT, LLC held 733,739 RGEN 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 733,739 shares
    Change vs previous 13F +298,965 shares

    0.33% of the 13F portfolio, value $100,111,349.

    13F-HR 0001193125-26-352250 filed by FRED ALGER MANAGEMENT, LLC
    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 434,774 shares
    Change vs previous 13F -476,753 shares

    0.23% of the 13F portfolio, value $51,225,073.

    13F-HR 0001193125-26-226659 filed by FRED ALGER MANAGEMENT, LLC
    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 911,527 shares
    Change vs previous 13F +553,105 shares

    0.59% of the 13F portfolio, value $149,362,814.

    13F-HR 0001193125-26-052991 filed by FRED ALGER MANAGEMENT, LLC
    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 358,422 shares
    Change vs previous 13F +58,866 shares

    0.19% of the 13F portfolio, value $47,910,269.

    13F-HR 0001193125-25-282909 filed by FRED ALGER MANAGEMENT, LLC
    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 299,556 shares
    Change vs previous 13F -137,481 shares

    0.17% of the 13F portfolio, value $37,258,775.

    13F-HR 0000950123-25-008360 filed by FRED ALGER MANAGEMENT, LLC
    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 437,037 shares
    Change vs previous 13F +77,530 shares

    0.32% of the 13F portfolio, value $55,608,588.

    13F-HR 0000950123-25-005777 filed by FRED ALGER MANAGEMENT, LLC
    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 359,507 shares
    Change vs previous 13F -39,047 shares

    0.25% of the 13F portfolio, value $51,747,438.

    13F-HR 0000950123-25-002764 filed by FRED ALGER MANAGEMENT, LLC
    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 398,554 shares
    Change vs previous 13F not available

    0.29% of the 13F portfolio, value $59,312,806.

    13F-HR 0000950123-24-011836 filed by FRED ALGER MANAGEMENT, LLC
    Filed (acceptance time not in the bulk data set), ingested

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