MAIRS & POWER INC

Position in CLFD — Clearfield, Inc.

CIK 1070134 St Paul, MN

Position in CLFD

as of Mar 31, 2026 · filed May 14, 2026 Compact

Position Value

$19,368,972

-$1,916,008 QoQ

Shares Held

731,733

+0.2% QoQ

Ownership

5.38%

of shares outstanding

% of Portfolio

0.21%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Dec 2022

14 quarters on record

Voting authority Sole 93.68335171435483.ToString("F0")% Shared 0.ToString("F0")% None 6.316648285645174.ToString("F0")%

Technology · as of Mar 31, 2026

MAIRS & POWER INC holds $257,588,658 across 6 Communication Equipment names. CLFD ranks #2 (7.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MSI	Motorola Solutions, Inc.	540,732	$234,661,466
2	CLFD	Clearfield, Inc. This page	731,733	$19,368,972
3	CSCO	Cisco Systems, Inc.	19,827	$1,538,376
4	CIEN	Ciena Corp	2,800	$1,087,044
5	VSAT	Viasat Inc	13,000	$595,400
6	DGII	Digi International Inc	7,000	$337,400

14 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$19,368,972	731,733	+0.2%	Shares	Sole	2026-05-14
2025-12-31	$21,284,980	730,188	-0.1%	Shares	Sole	2026-02-17
2025-09-30	$25,124,663	730,793	-4.1%	Shares	Sole	2025-11-14
2025-06-30	$33,088,577	762,234	-10.6%	Shares	Sole	2025-08-14
2025-03-31	$25,327,978	852,220	+103.3%	Shares	Sole	2025-05-15
2024-12-31	$12,995,386	419,206	+44.5%	Shares	Sole	2025-02-14
2024-09-30	$11,302,529	290,106	+3.0%	Shares	Sole	2024-11-14
2024-06-30	$10,862,197	281,696	+8.7%	Shares	Sole	2024-08-14
2024-03-31	$7,992,679	259,166	+13.1%	Shares	Sole	2024-05-15
2023-12-31	$6,664,583	229,181	+5.4%	Shares	Sole	2024-02-14
2023-09-30	$6,231,429	217,426	+23.3%	Shares	Sole	2023-11-14
2023-06-30	$8,347,331	176,290	+73.2%	Shares	Sole	2023-08-14
2023-03-31	$4,739,747	101,755	+277.8%	Shares	Sole	2023-05-15
2022-12-31	$2,535,190	26,930	—	Shares	Sole	2023-02-14
No filing history on record for this holder in this stock.