MAIRS & POWER INC

CIK

1070134

Location

St Paul, MN

Portfolio Value

Mid $3,075,733,496

Diversification

Diversified

Filing Date

Global Rank

#445 / 8,588 ▼ 13

Top Industry

Semiconductors 12.2%

3Y Alpha vs SPY

-7.1%

Period ended 3 months ago

Filed May 14, 2026 · 34d

25 quarters · since Mar 2020

Clone Performance

Jun 2023–Jun 2026 · vs SPY

Hypothetical growth of cloning every reported 13F position and rebalancing on each filing, indexed to the same start.

Cloned portfolio

+47.3%

SPY

+76.8%

Annualised alpha

-7.1%

Max drawdown

−19.6%

Estimate. 13F holdings are quarter-lagged and long-only, so the clone rebalances about 45 days after each period end — when the filing becomes public — and excludes options and short positions. Past performance does not predict future results.

Portfolio Concentration

213 positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025

Top Position

9.0%

−0.5 pts

Top 5

29.5%

−3.5 pts

Top 10

44.3%

−3.9 pts

HHI

321

Diversified−40

Portfolio Trend

25 quarters · across all stocks

Sector Breakdown

As of Mar 31, 2026

Sector	% Portfolio	Value	Positions
Technology	33.3%	$3,075,733,496	37
Industrials	17.7%	$1,637,841,965	45
Healthcare	11.5%	$1,059,907,916	30
Financial Services	10.6%	$979,234,255	29
Consumer Cyclical	7.5%	$688,610,148	14
Utilities	5.6%	$518,650,864	9
Basic Materials	5.5%	$511,028,507	10
Communication Services	4.2%	$391,746,999	6
Consumer Defensive	2.1%	$196,535,293	15
Unclassified	1.5%	$140,252,478	6
Energy	0.3%	$29,055,616	10
Real Estate	0.0%	$1,230,949	2

Last Quarter's Activity

Export CSV

Mar 31, 2026 vs Dec 31, 2025

Added To

Positions the filer increased

25 positions

Ticker	Company	Δ Shares	Shares	Value
FISV	Fiserv Inc	+509,603	2,152,853	$120,129,197
WM	Waste Management Inc	+397,240	398,240	$91,511,569
PANW	Palo Alto Networks Inc	+312,032	532,679	$85,399,097
AMP	Ameriprise Financial Inc	+154,436	197,047	$87,567,686
BSY	Bentley Systems Inc	+153,172	236,158	$8,293,868
JHX	James Hardie Industries plc	+150,088	240,761	$4,560,013
ZTS	Zoetis Inc.	+76,716	303,116	$35,831,342
CGNX	Cognex Corp	+52,279	1,223,875	$59,957,636
V	Visa Inc.	+38,399	840,917	$254,158,754
ISRG	Intuitive Surgical Inc	+37,608	99,885	$46,045,986
RDNT	RadNet, Inc.	+37,468	133,116	$7,439,853
MSFT	Microsoft Corp	+29,495	1,942,391	$719,014,876
TRV	Travelers Companies, Inc.	+28,614	142,414	$41,539,315
PG	PROCTER & GAMBLE Co	+27,144	243,410	$35,158,140
TREX	Trex Co Inc	+25,370	116,022	$4,225,521
MEDP	Medpace Holdings, Inc.	+19,055	85,720	$41,161,886
PATH	UiPath, Inc.	+18,575	30,700	$340,770
CVX	Chevron Corp	+17,405	39,017	$8,072,617
MSI	Motorola Solutions, Inc.	+15,518	540,732	$234,661,466
ABT	Abbott Laboratories	+13,697	721,778	$74,104,947
ADP	Automatic Data Processing Inc	+13,655	124,436	$25,282,906
HWKN	Hawkins Inc	+13,382	25,951	$3,986,073
WTFC	Wintrust Financial Corp	+11,111	57,744	$8,022,951
KNF	Knife River Corp	+10,573	134,428	$10,976,046
AMZN	Amazon Com Inc	+10,144	2,602,912	$542,108,482
No positions match the current search.

Trimmed

Positions the filer reduced

25 positions

Ticker	Company	Δ Shares	Shares	Value
KHC	Kraft Heinz Co	−1,356,268	316,563	$7,119,501
FAST	Fastenal Co	−745,057	3,922,442	$182,001,308
TTC	Toro Co	−703,840	2,718,983	$254,061,771
HRL	Hormel Foods Corp /De/	−371,554	3,417,959	$77,416,771
WFC	Wells Fargo & Company/Mn	−363,465	1,365,876	$108,737,388
TNC	Tennant Co	−268,160	803,464	$53,350,009
CRM	Salesforce, Inc.	−246,017	49,996	$9,332,753
JNJ	Johnson & Johnson	−226,756	577,590	$141,186,099
JPM	Jpmorgan Chase & Co	−222,207	1,054,197	$310,102,589
NVDA	Nvidia Corp	−188,297	4,761,351	$830,379,614
SKYT	SkyWater Technology, Inc	−169,131	13,000	$356,330
ONB	Old National Bancorp /In/	−156,769	433,191	$9,573,521
GGG	Graco Inc	−89,898	3,815,684	$322,997,650
UNH	Unitedhealth Group Inc	−89,452	741,083	$200,529,648
HUBG	Hub Group, Inc.	−76,103	159,933	$5,763,985
QCOM	Qualcomm Inc/De	−72,253	478,055	$61,563,922
LNT	Alliant Energy Corp	−67,887	2,889,060	$207,318,945
DCI	DONALDSON Co INC	−61,279	499,374	$42,381,871
VZ	Verizon Communications Inc	−58,236	3,315,436	$166,434,887
DIS	Walt Disney Co	−56,337	239,846	$23,116,357
LFUS	Littelfuse Inc /De	−54,241	724,710	$245,930,338
FUL	Fuller H B Co	−49,450	2,361,617	$145,664,536
PFG	Principal Financial Group Inc	−47,934	163,884	$14,767,587
ROK	Rockwell Automation, Inc	−46,781	283,553	$101,761,500
USB	US Bancorp De	−46,462	601,518	$31,284,951
No positions match the current search.

New Positions

Positions the filer opened this quarter

14 positions

Ticker	Company	Shares	Value
SFM	Sprouts Farmers Market, Inc.	292,177	$22,535,612
AMBA	Ambarella Inc	117,581	$6,053,069
APG	APi Group Corp	57,969	$2,348,903
SOLS	Solstice Advanced Materials Inc.	22,239	$1,693,722
AMCR	Amcor plc	17,129	$680,877
GLD	Spdr Gold Trust	1,430	$615,314
MDY	Spdr S&P Midcap 400 ETF Trust	819	$505,126
WAT	Waters Corp /De/	958	$285,292
MU	Micron Technology Inc	693	$234,123
UTHR	UNITED THERAPEUTICS Corp	350	$207,543
MUR	Murphy Oil Corp	5,000	$206,250
ADI	Analog Devices Inc	648	$206,154
TKR	Timken Co	2,000	$201,140
SNAP	Snap Inc	22,525	$103,615
No positions match the current search.

Sold Out

Positions the filer fully exited

13 positions

Ticker	Company	Shares	Value
PIPR	Piper Sandler Companies	175,861	$14,935,435
INSP	Inspire Medical Systems, Inc.	57,616	$5,313,923
MGPI	Mgp Ingredients Inc	173,245	$4,209,853
CWAN	Clearwater Analytics Holdings, Inc.	92,510	$2,231,341
THRM	Gentherm Inc	52,946	$1,925,646
EXAS	EXACT SCIENCES CORP	17,236	$1,750,488
CVRX	CVRx, Inc.	142,456	$1,011,437
ADSK	Autodesk, Inc.	801	$237,104
RF	Regions Financial Corp	7,620	$206,502
ETN	Eaton Corp plc	648	$206,394
NVS	Novartis AG	1,485	$204,736
BLK	BlackRock, Inc.	190	$203,364
SONY	Sony Group Corp	7,830	$200,448
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

37 positions · $3,075,733,496 total · Technology only · as of Mar 31, 2026

All sectors Basic Materials Communication Services Consumer Cyclical Consumer Defensive Energy Financial Services Healthcare Industrials Real Estate Technology Utilities

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
ADI	Analog Devices Inc Technology	NEW	648	NEW	$206,154	NEW	0.01%
MU	Micron Technology Inc Technology	NEW	693	NEW	$234,123	NEW	0.01%
ACN	Accenture plc Technology	Added	1,229	+45	$243,698	−23.3%	0.01%
DGII	Digi International Inc Technology	Reduced	7,000	-1,000	$337,400	−2.6%	0.01%
PATH	UiPath, Inc. Technology	Added	30,700	+18,575	$340,770	+71.5%	0.01%
SKYT	SkyWater Technology, Inc Technology	Reduced	13,000	-169,131	$356,330	−89.2%	0.01%
AMD	Advanced Micro Devices Inc Technology	Reduced	1,930	-83	$392,619	−8.9%	0.01%
NVEC	Nve Corp /New/ Technology	Held	6,000	0	$393,000	+10.4%	0.01%
ADBE	Adobe Inc. Technology	Held	2,009	0	$488,347	−30.5%	0.02%
VSAT	Viasat Inc Technology	Held	13,000	0	$595,400	+32.9%	0.02%
INTC	Intel Corp Technology	Held	14,333	0	$632,515	+19.6%	0.02%
IBM	International Business Machines Corp Technology	Added	3,647	+20	$883,996	−17.7%	0.03%
CIEN	Ciena Corp Technology	Reduced	2,800	-200	$1,087,044	+54.9%	0.04%
AVGO	Broadcom Inc. Technology	Added	3,533	+210	$1,093,498	−4.9%	0.04%
CSCO	Cisco Systems, Inc. Technology	Reduced	19,827	-438	$1,538,376	−1.5%	0.05%
AMAT	Applied Materials Inc /De Technology	Held	11,327	0	$3,871,455	+33.0%	0.13%
ORCL	Oracle Corp Technology	Added	30,718	+2,100	$4,518,924	−19.0%	0.15%
AMBA	Ambarella Inc Technology	NEW	117,581	NEW	$6,053,069	NEW	0.20%
BSY	Bentley Systems Inc Technology	Added	236,158	+153,172	$8,293,868	+161.9%	0.27%
PLXS	Plexus Corp Technology	Held	45,868	0	$9,290,104	+37.8%	0.30%
CRM	Salesforce, Inc. Technology	Reduced	49,996	-246,017	$9,332,753	−88.1%	0.30%
GLW	Corning Inc /Ny Technology	Reduced	88,250	-2,100	$11,999,352	+51.7%	0.39%
BMI	Badger Meter Inc Technology	Added	104,815	+2,002	$15,968,565	−10.9%	0.52%
CLFD	Clearfield, Inc. Technology	Added	731,733	+1,545	$19,368,972	−9.0%	0.63%
ADP	Automatic Data Processing Inc Technology	Added	124,436	+13,655	$25,282,906	−11.3%	0.82%
WK	Workiva Inc Technology	Reduced	715,640	-12,354	$42,673,613	−32.0%	1.39%
TXN	Texas Instruments Inc Technology	Reduced	231,151	-4,273	$44,875,655	+9.9%	1.46%
CGNX	Cognex Corp Technology	Added	1,223,875	+52,279	$59,957,636	+42.2%	1.95%
QCOM	Qualcomm Inc/De Technology	Reduced	478,055	-72,253	$61,563,922	−34.6%	2.00%
PANW	Palo Alto Networks Inc Technology	Added	532,679	+312,032	$85,399,097	+110.1%	2.78%
ENTG	Entegris Inc Technology	Reduced	1,343,104	-5,882	$157,465,512	+38.6%	5.12%
TSM	Taiwan Semiconductor Manufacturing Co Ltd Technology	Reduced	486,253	-294	$164,329,201	+11.1%	5.34%
MSI	Motorola Solutions, Inc. Technology	Added	540,732	+15,518	$234,661,466	+16.6%	7.63%
LFUS	Littelfuse Inc /De Technology	Reduced	724,710	-54,241	$245,930,338	+24.8%	8.00%
AAPL	Apple Inc. Technology	Reduced	1,208,398	-9,088	$306,679,328	−7.3%	9.97%
MSFT	Microsoft Corp Technology	Added	1,942,391	+29,495	$719,014,876	−22.3%	23.38%
NVDA	Nvidia Corp Technology	Reduced	4,761,351	-188,297	$830,379,614	−10.0%	27.00%