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OBERWEIS ASSET MANAGEMENT INC/: ACA position timeline

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

OBERWEIS ASSET MANAGEMENT INC/ held 295,450 ACA 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 295,450 shares
    Change vs previous 13F +27,750 shares

    0.89% of the 13F portfolio, value $42,925,931.

    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 267,700 shares
    Change vs previous 13F +46,100 shares

    0.84% of the 13F portfolio, value $28,413,678.

    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 221,600 shares
    Change vs previous 13F 0 shares

    0.86% of the 13F portfolio, value $23,560,512.

    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 221,600 shares
    Change vs previous 13F 0 shares

    0.8% of the 13F portfolio, value $20,766,136.

    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 221,600 shares
    Change vs previous 13F +18,600 shares

    0.84% of the 13F portfolio, value $19,214,936.

    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 203,000 shares
    Change vs previous 13F 0 shares

    0.78% of the 13F portfolio, value $15,655,360.

    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 203,000 shares
    Change vs previous 13F not available

    0.93% of the 13F portfolio, value $19,638,220.

    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).