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Calamos Advisors LLC: MSFT position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Calamos Advisors LLC on MSFT, newest first. How the timeline and the estimate are built.

Calamos Advisors LLC held 2,328,359 MSFT shares at 2026-06-30 per its 13F-HR filed 2026-07-31.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 2,328,359 shares
    Change vs previous 13F -339,437 shares

    2.81% of the 13F portfolio, value $868,524,416.

    13F-HR 0001316507-26-000003 filed by Calamos Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

    • Calamos Advisors LLC: 2,045,038 shares
    • Calamos Wealth Management LLC: 283,321 shares

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

  2. period ended2026-03-31
    13F 2,667,796 shares
    Change vs previous 13F +265,410 shares

    3.43% of the 13F portfolio, value $987,538,003.

    13F-HR 0001316507-26-000002 filed by Calamos Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

    • Calamos Advisors LLC: 2,375,507 shares
    • Calamos Wealth Management LLC: 292,289 shares

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

  3. period ended2025-12-31
    13F 2,402,386 shares
    Change vs previous 13F -60,959 shares

    4.27% of the 13F portfolio, value $1,161,842,071.

    13F-HR 0001316507-26-000001 filed by Calamos Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

    • Calamos Advisors LLC: 2,128,249 shares
    • Calamos Wealth Management LLC: 274,137 shares

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

  4. period ended2025-09-30
    13F 2,463,345 shares
    Change vs previous 13F -12,101 shares

    4.64% of the 13F portfolio, value $1,275,889,455.

    13F-HR 0001316507-25-000003 filed by Calamos Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

    • Calamos Advisors LLC: 2,197,239 shares
    • Calamos Wealth Management LLC: 266,106 shares

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

  5. period ended2025-06-30
    13F 2,475,446 shares
    Change vs previous 13F -63,340 shares

    4.79% of the 13F portfolio, value $1,231,311,733.

    13F-HR 0001085146-25-004696 filed by Calamos Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

    • Calamos Advisors LLC: 2,231,636 shares
    • Calamos Wealth Management LLC: 243,810 shares

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

  6. period ended2025-03-31
    13F 2,538,786 shares
    Change vs previous 13F -3,313 shares

    4.12% of the 13F portfolio, value $953,035,039.

    13F-HR 0001085146-25-002415 filed by Calamos Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

    • Calamos Advisors LLC: 2,301,583 shares
    • Calamos Wealth Management LLC: 237,203 shares

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

  7. period ended2024-12-31
    13F 2,542,099 shares
    Change vs previous 13F -35,973 shares

    4.53% of the 13F portfolio, value $1,071,494,820.

    13F-HR 0001085146-25-000482 filed by Calamos Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

    • Calamos Advisors LLC: 2,317,841 shares
    • Calamos Wealth Management LLC: 224,258 shares

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

  8. period ended2024-09-30
    13F 2,578,072 shares
    Change vs previous 13F not available

    4.77% of the 13F portfolio, value $1,109,344,196.

    13F-HR 0001085146-24-005402 filed by Calamos Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

    • Calamos Advisors LLC: 2,357,647 shares
    • Calamos Wealth Management LLC: 220,425 shares

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