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OBERWEIS ASSET MANAGEMENT INC/: MTDR position timeline

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

OBERWEIS ASSET MANAGEMENT INC/ held 314,200 MTDR 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 314,200 shares
    Change vs previous 13F +1,500 shares

    0.32% of the 13F portfolio, value $15,640,876.

    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 312,700 shares
    Change vs previous 13F +58,800 shares

    0.58% of the 13F portfolio, value $19,756,386.

    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 253,900 shares
    Change vs previous 13F 0 shares

    0.39% of the 13F portfolio, value $10,775,516.

    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 253,900 shares
    Change vs previous 13F 0 shares

    0.44% of the 13F portfolio, value $11,407,727.

    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 253,900 shares
    Change vs previous 13F +78,600 shares

    0.53% of the 13F portfolio, value $12,116,108.

    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 175,300 shares
    Change vs previous 13F +30,500 shares

    0.45% of the 13F portfolio, value $8,956,077.

    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 144,800 shares
    Change vs previous 13F +7,900 shares

    0.38% of the 13F portfolio, value $8,146,448.

    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 136,900 shares
    Change vs previous 13F not available

    0.35% of the 13F portfolio, value $6,765,598.

    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).