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MAIRS & POWER INC: CLFD position timeline

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

MAIRS & POWER INC held 385,257 CLFD 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 385,257 shares
    Change vs previous 13F -346,476 shares

    0.14% of the 13F portfolio, value $15,329,376.

    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 731,733 shares
    Change vs previous 13F +1,545 shares

    0.2% of the 13F portfolio, value $19,368,973.

    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 730,188 shares
    Change vs previous 13F -605 shares

    0.2% of the 13F portfolio, value $21,284,980.

    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 730,793 shares
    Change vs previous 13F -31,441 shares

    0.24% of the 13F portfolio, value $25,124,663.

    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 762,234 shares
    Change vs previous 13F -89,986 shares

    0.33% of the 13F portfolio, value $33,088,578.

    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 852,220 shares
    Change vs previous 13F +433,014 shares

    0.26% of the 13F portfolio, value $25,327,978.

    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).

  7. period ended2024-12-31
    13F 419,206 shares
    Change vs previous 13F +129,100 shares

    0.13% of the 13F portfolio, value $12,995,386.

    13F-HR 0001172661-25-000936 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).

  8. period ended2024-09-30
    13F 290,106 shares
    Change vs previous 13F not available

    0.11% of the 13F portfolio, value $11,302,530.

    13F-HR 0001172661-24-004776 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).