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OBERWEIS ASSET MANAGEMENT INC/: DCO position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of OBERWEIS ASSET MANAGEMENT INC/ on DCO, newest first. How the timeline and the estimate are built.

OBERWEIS ASSET MANAGEMENT INC/ held 113,800 DCO 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 113,800 shares
    Change vs previous 13F +13,900 shares

    0.44% of the 13F portfolio, value $21,076,898.

    13F-HR 0001213900-26-089777 filed by OBERWEIS ASSET MANAGEMENT INC/
    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 99,900 shares
    Change vs previous 13F +1,800 shares

    0.36% of the 13F portfolio, value $12,187,800.

    13F-HR 0001213900-26-057307 filed by OBERWEIS ASSET MANAGEMENT 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 98,100 shares
    Change vs previous 13F +2,400 shares

    0.34% of the 13F portfolio, value $9,332,253.

    13F-HR 0001213900-26-017101 filed by OBERWEIS ASSET MANAGEMENT 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 95,700 shares
    Change vs previous 13F 0 shares

    0.35% of the 13F portfolio, value $9,199,641.

    13F-HR 0001213900-25-111225 filed by OBERWEIS ASSET MANAGEMENT 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 95,700 shares
    Change vs previous 13F 0 shares

    0.34% of the 13F portfolio, value $7,907,691.

    13F-HR 0001213900-25-076460 filed by OBERWEIS ASSET MANAGEMENT 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 95,700 shares
    Change vs previous 13F 0 shares

    0.28% of the 13F portfolio, value $5,553,471.

    13F-HR 0001213900-25-043859 filed by OBERWEIS ASSET MANAGEMENT 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 95,700 shares
    Change vs previous 13F not available

    0.29% of the 13F portfolio, value $6,092,262.

    13F-HR 0001213900-25-013939 filed by OBERWEIS ASSET MANAGEMENT INC/
    Filed (acceptance time not in the bulk data set), ingested

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