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OBERWEIS ASSET MANAGEMENT INC/: CLH position timeline

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

OBERWEIS ASSET MANAGEMENT INC/ held 153,475 CLH 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 153,475 shares
    Change vs previous 13F +9,120 shares

    0.95% of the 13F portfolio, value $45,850,656.

    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 144,355 shares
    Change vs previous 13F +27,485 shares

    1.22% of the 13F portfolio, value $41,390,909.

    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 116,870 shares
    Change vs previous 13F +100 shares

    1% of the 13F portfolio, value $27,403,678.

    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 116,770 shares
    Change vs previous 13F -530 shares

    1.04% of the 13F portfolio, value $27,116,329.

    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 117,300 shares
    Change vs previous 13F +6,980 shares

    1.18% of the 13F portfolio, value $27,117,414.

    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 110,320 shares
    Change vs previous 13F +7,890 shares

    1.08% of the 13F portfolio, value $21,744,072.

    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 102,430 shares
    Change vs previous 13F -2,940 shares

    1.11% of the 13F portfolio, value $23,573,240.

    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).

  8. period ended2024-09-30
    13F 105,370 shares
    Change vs previous 13F not available

    1.3% of the 13F portfolio, value $25,468,983.

    13F-HR 0001213900-24-098012 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).