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Disclosery

MAIRS & POWER INC: TSM position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of MAIRS & POWER INC on TSM, newest first. How the timeline and the estimate are built.

MAIRS & POWER INC held 476,245 TSM 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 476,245 shares
    Change vs previous 13F -10,008 shares

    2.09% of the 13F portfolio, value $227,440,325.

    13F-HR 0001172661-26-003496 filed by MAIRS & POWER 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 486,253 shares
    Change vs previous 13F -294 shares

    1.68% of the 13F portfolio, value $164,329,539.

    13F-HR 0001172661-26-001819 filed by MAIRS & POWER 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 486,547 shares
    Change vs previous 13F -8,718 shares

    1.42% of the 13F portfolio, value $147,856,768.

    13F-HR 0001172661-26-001057 filed by MAIRS & POWER 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 495,265 shares
    Change vs previous 13F +48,439 shares

    1.3% of the 13F portfolio, value $138,322,562.

    13F-HR 0001172661-25-004985 filed by MAIRS & POWER 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 446,826 shares
    Change vs previous 13F +49,169 shares

    1% of the 13F portfolio, value $101,201,621.

    13F-HR 0001172661-25-003391 filed by MAIRS & POWER 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 397,657 shares
    Change vs previous 13F not available

    0.69% of the 13F portfolio, value $66,011,062.

    13F-HR 0001172661-25-002089 filed by MAIRS & POWER INC
    Filed (acceptance time not in the bulk data set), ingested

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