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Calamos Advisors LLC: O position timeline

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

Calamos Advisors LLC held 271,821 O 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 271,821 shares
    Change vs previous 13F -5,054 shares

    0.06% of the 13F portfolio, value $16,842,029.

    13F-HR 0001316507-26-000003 filed by Calamos Advisors 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 276,875 shares
    Change vs previous 13F 0 shares

    0.07% of the 13F portfolio, value $16,939,213.

    13F-HR 0001316507-26-000002 filed by Calamos Advisors 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 276,875 shares
    Change vs previous 13F -11,242 shares

    0.06% of the 13F portfolio, value $15,607,444.

    13F-HR 0001316507-26-000001 filed by Calamos Advisors 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 288,117 shares
    Change vs previous 13F 0 shares

    0.07% of the 13F portfolio, value $17,514,632.

    13F-HR 0001316507-25-000003 filed by Calamos Advisors 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 288,117 shares
    Change vs previous 13F 0 shares

    0.07% of the 13F portfolio, value $16,598,420.

    13F-HR 0001085146-25-004696 filed by Calamos Advisors 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 288,117 shares
    Change vs previous 13F +3,209 shares

    0.08% of the 13F portfolio, value $16,713,667.

    13F-HR 0001085146-25-002415 filed by Calamos Advisors 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 284,908 shares
    Change vs previous 13F 0 shares

    0.07% of the 13F portfolio, value $15,216,936.

    13F-HR 0001085146-25-000482 filed by Calamos Advisors 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 284,908 shares
    Change vs previous 13F not available

    0.08% of the 13F portfolio, value $18,068,865.

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

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