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Disclosery

Yorktown Management & Research Co Inc: CALX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Yorktown Management & Research Co Inc on CALX, newest first. How the timeline and the estimate are built.

Yorktown Management & Research Co Inc held 0 CALX shares at 2026-06-30 per its 13F-HR filed 2026-07-23.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 0 shares
    Change vs previous 13F -9,000 shares

    13F-HR 0001193125-26-313433 filed by Yorktown Management & Research Co 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 ended2026-03-31
    13F 9,000 shares
    Change vs previous 13F 0 shares

    0.37% of the 13F portfolio, value $440,910.

    13F-HR 0001193125-26-162911 filed by Yorktown Management & Research Co Inc
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2025-12-31
    13F 9,000 shares
    Change vs previous 13F 0 shares

    0.38% of the 13F portfolio, value $476,370.

    13F-HR 0001193125-26-020430 filed by Yorktown Management & Research Co Inc
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-09-30
    13F 9,000 shares
    Change vs previous 13F 0 shares

    0.44% of the 13F portfolio, value $552,330.

    13F-HR 0001193125-25-255399 filed by Yorktown Management & Research Co Inc
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-06-30
    13F 9,000 shares
    Change vs previous 13F 0 shares

    0.46% of the 13F portfolio, value $478,710.

    13F-HR 0000950123-25-006929 filed by Yorktown Management & Research Co Inc
    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 9,000 shares
    Change vs previous 13F 0 shares

    0.35% of the 13F portfolio, value $318,960.

    13F-HR 0000950123-25-003639 filed by Yorktown Management & Research Co Inc
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2024-12-31
    13F 9,000 shares
    Change vs previous 13F not available

    0.3% of the 13F portfolio, value $313,830.

    13F-HR 0000950123-25-000592 filed by Yorktown Management & Research Co Inc
    Filed (acceptance time not in the bulk data set), ingested

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