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ARROWSTREET CAPITAL, LIMITED PARTNERSHIP: IRDM position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of ARROWSTREET CAPITAL, LIMITED PARTNERSHIP on IRDM, newest first. How the timeline and the estimate are built.

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP held 754,424 IRDM shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 754,424 shares
    Change vs previous 13F -346,807 shares

    0.02% of the 13F portfolio, value $41,380,156.

    13F-HR 0001164508-26-000035 filed by ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
    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 1,101,231 shares
    Change vs previous 13F -54,236 shares

    0.02% of the 13F portfolio, value $30,548,148.

    13F-HR 0001164508-26-000028 filed by ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
    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 1,155,467 shares
    Change vs previous 13F +217,886 shares

    0.01% of the 13F portfolio, value $20,082,016.

    13F-HR 0001164508-26-000002 filed by ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
    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 937,581 shares
    Change vs previous 13F +560,010 shares

    0.01% of the 13F portfolio, value $16,370,164.

    13F-HR 0001164508-25-000009 filed by ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
    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 377,571 shares
    Change vs previous 13F -170,810 shares

    0.01% of the 13F portfolio, value $11,391,317.

    13F-HR 0001402828-25-000008 filed by ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
    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 548,381 shares
    Change vs previous 13F +117,645 shares

    0.01% of the 13F portfolio, value $14,981,769.

    13F-HR 0001402828-25-000004 filed by ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
    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 430,736 shares
    Change vs previous 13F -351,016 shares

    0.01% of the 13F portfolio, value $12,499,959.

    13F-HR 0001402828-25-000002 filed by ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
    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 781,752 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $23,804,348.

    13F-HR 0001164508-24-000006 filed by ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
    Filed (acceptance time not in the bulk data set), ingested

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