Largest positions
| Issuer | Class | Value | Share |
|---|---|---|---|
| Nvidia CorporationCOM | COM | $941,982,058 | 8.6% |
| Microsoft Corp.COM | COM | $727,663,988 | 6.7% |
| Amazon Com Inc.COM | COM | $619,550,768 | 5.7% |
| Alphabet Inc.CAP STK CL C | CAP STK CL C | $594,809,371 | 5.5% |
| Eli Lilly & COCOM | COM | $386,371,186 | 3.5% |
| Nvent Elec PLCSHS | SHS | $348,177,553 | 3.2% |
| Apple Inc.COM | COM | $329,421,363 | 3.0% |
| JPMORGAN Chase & COCOM | COM | $302,305,621 | 2.8% |
| Visa Inc.COM CL A | COM CL A | $292,329,895 | 2.7% |
| Graco Inc.COM | COM | $287,125,237 | 2.6% |
| Littelfuse Inc.COM | COM | $274,156,014 | 2.5% |
| Toro COCOM | COM | $260,742,088 | 2.4% |
| Entegris Inc.COM | COM | $234,112,970 | 2.1% |
| Unitedhealth Group Inc.COM | COM | $232,732,484 | 2.1% |
| Taiwan Semiconductor ManufacSPONSORED ADS | SPONSORED ADS | $227,440,325 | 2.1% |
| Motorola Solutions Inc.COM NEW | COM NEW | $226,281,554 | 2.1% |
| Ecolab Inc.COM | COM | $216,630,797 | 2.0% |
| WEC Energy Group Inc.COM | COM | $208,773,667 | 1.9% |
| Palo Alto Networks Inc.COM | COM | $204,557,778 | 1.9% |
| Alliant Energy Corp.COM | COM | $202,772,183 | 1.9% |
| Bio-techne Corp.COM | COM | $190,804,299 | 1.8% |
| Meta Platforms Inc.CL A | CL A | $187,502,906 | 1.7% |
| Fastenal COCOM | COM | $185,918,876 | 1.7% |
| Sherwin Williams COCOM | COM | $151,702,686 | 1.4% |
| C H Robinson Worldwide INCOM NEW | COM NEW | $145,155,131 | 1.3% |
| Fuller H B COCOM | COM | $141,945,943 | 1.3% |
| Verizon Communications Inc.COM | COM | $139,376,929 | 1.3% |
| Waste Mgmt Inc. DelCOM | COM | $131,727,652 | 1.2% |
| Rockwell Automation Inc.COM | COM | $127,637,070 | 1.2% |
| Fiserv Inc.COM | COM | $112,473,072 | 1.0% |
| Johnson & JohnsonCOM | COM | $107,431,831 | 1.0% |
| Ameriprise Finl Inc.COM | COM | $98,200,331 | 0.9% |
| Cognex Corp.COM | COM | $94,714,932 | 0.9% |
| Hormel Foods Corp.COM | COM | $84,339,527 | 0.8% |
| Caseys Gen Stores Inc.COM | COM | $72,425,239 | 0.7% |
| Wells Fargo & COCOM | COM | $72,077,458 | 0.7% |
| Gallagher Arthur J & COCOM | COM | $71,520,008 | 0.7% |
| Abbott LaboratoriesCOM | COM | $66,182,014 | 0.6% |
| Texas Instrs Inc.COM | COM | $64,816,216 | 0.6% |
| Tennant COCOM | COM | $59,684,772 | 0.5% |
| Intuitive Surgical Inc.COM NEW | COM NEW | $58,243,815 | 0.5% |
| 3m COCOM | COM | $56,563,197 | 0.5% |
| Home Depot Inc.COM | COM | $53,766,917 | 0.5% |
| Travelers Companies Inc.COM | COM | $51,657,838 | 0.5% |
| American Express COCOM | COM | $49,253,116 | 0.5% |
| Idacorp Inc.COM | COM | $46,898,461 | 0.4% |
| Medpace Hldgs Inc.COM | COM | $45,923,397 | 0.4% |
| CME Group Inc.COM | COM | $43,191,036 | 0.4% |
| Donaldson Inc.COM | COM | $41,627,862 | 0.4% |
| Workiva Inc.COM CL A | COM CL A | $40,238,608 | 0.4% |
Nvidia CorporationCOM$941,982,058
- Class
- COM
- Share
- 8.6%
Microsoft Corp.COM$727,663,988
- Class
- COM
- Share
- 6.7%
Amazon Com Inc.COM$619,550,768
- Class
- COM
- Share
- 5.7%
Alphabet Inc.CAP STK CL C$594,809,371
- Class
- CAP STK CL C
- Share
- 5.5%
Eli Lilly & COCOM$386,371,186
- Class
- COM
- Share
- 3.5%
Nvent Elec PLCSHS$348,177,553
- Class
- SHS
- Share
- 3.2%
Apple Inc.COM$329,421,363
- Class
- COM
- Share
- 3.0%
JPMORGAN Chase & COCOM$302,305,621
- Class
- COM
- Share
- 2.8%
Visa Inc.COM CL A$292,329,895
- Class
- COM CL A
- Share
- 2.7%
Graco Inc.COM$287,125,237
- Class
- COM
- Share
- 2.6%
Littelfuse Inc.COM$274,156,014
- Class
- COM
- Share
- 2.5%
Toro COCOM$260,742,088
- Class
- COM
- Share
- 2.4%
Entegris Inc.COM$234,112,970
- Class
- COM
- Share
- 2.1%
Unitedhealth Group Inc.COM$232,732,484
- Class
- COM
- Share
- 2.1%
Taiwan Semiconductor ManufacSPONSORED ADS$227,440,325
- Class
- SPONSORED ADS
- Share
- 2.1%
Motorola Solutions Inc.COM NEW$226,281,554
- Class
- COM NEW
- Share
- 2.1%
Ecolab Inc.COM$216,630,797
- Class
- COM
- Share
- 2.0%
WEC Energy Group Inc.COM$208,773,667
- Class
- COM
- Share
- 1.9%
Palo Alto Networks Inc.COM$204,557,778
- Class
- COM
- Share
- 1.9%
Alliant Energy Corp.COM$202,772,183
- Class
- COM
- Share
- 1.9%
Bio-techne Corp.COM$190,804,299
- Class
- COM
- Share
- 1.8%
Meta Platforms Inc.CL A$187,502,906
- Class
- CL A
- Share
- 1.7%
Fastenal COCOM$185,918,876
- Class
- COM
- Share
- 1.7%
Sherwin Williams COCOM$151,702,686
- Class
- COM
- Share
- 1.4%
C H Robinson Worldwide INCOM NEW$145,155,131
- Class
- COM NEW
- Share
- 1.3%
Fuller H B COCOM$141,945,943
- Class
- COM
- Share
- 1.3%
Verizon Communications Inc.COM$139,376,929
- Class
- COM
- Share
- 1.3%
Waste Mgmt Inc. DelCOM$131,727,652
- Class
- COM
- Share
- 1.2%
Rockwell Automation Inc.COM$127,637,070
- Class
- COM
- Share
- 1.2%
Fiserv Inc.COM$112,473,072
- Class
- COM
- Share
- 1.0%
Johnson & JohnsonCOM$107,431,831
- Class
- COM
- Share
- 1.0%
Ameriprise Finl Inc.COM$98,200,331
- Class
- COM
- Share
- 0.9%
Cognex Corp.COM$94,714,932
- Class
- COM
- Share
- 0.9%
Hormel Foods Corp.COM$84,339,527
- Class
- COM
- Share
- 0.8%
Caseys Gen Stores Inc.COM$72,425,239
- Class
- COM
- Share
- 0.7%
Wells Fargo & COCOM$72,077,458
- Class
- COM
- Share
- 0.7%
Gallagher Arthur J & COCOM$71,520,008
- Class
- COM
- Share
- 0.7%
Abbott LaboratoriesCOM$66,182,014
- Class
- COM
- Share
- 0.6%
Texas Instrs Inc.COM$64,816,216
- Class
- COM
- Share
- 0.6%
Tennant COCOM$59,684,772
- Class
- COM
- Share
- 0.5%
Intuitive Surgical Inc.COM NEW$58,243,815
- Class
- COM NEW
- Share
- 0.5%
3m COCOM$56,563,197
- Class
- COM
- Share
- 0.5%
Home Depot Inc.COM$53,766,917
- Class
- COM
- Share
- 0.5%
Travelers Companies Inc.COM$51,657,838
- Class
- COM
- Share
- 0.5%
American Express COCOM$49,253,116
- Class
- COM
- Share
- 0.5%
Idacorp Inc.COM$46,898,461
- Class
- COM
- Share
- 0.4%
Medpace Hldgs Inc.COM$45,923,397
- Class
- COM
- Share
- 0.4%
CME Group Inc.COM$43,191,036
- Class
- COM
- Share
- 0.4%
Donaldson Inc.COM$41,627,862
- Class
- COM
- Share
- 0.4%
Workiva Inc.COM CL A$40,238,608
- Class
- COM CL A
- Share
- 0.4%
The share class is shown on a wider screen.
The 50 largest of 254 positions by value, with holdings of the same security combined. The 200 largest are in this firm's machine-readable record. Share counts and quarter-on-quarter changes for each position are on EDGAR. View the full information table on EDGAR
This filing
- Form
- 13F-HR
- CIK
- 1070134
- File number
- 028-07342
- Options
- 0 call, 0 put
- In the 25 largest
- 73.2%
- Prior quarter
- $9,786,094,433 at 31 March 2026
- Positions opened
- 17
- Positions closed
- 8
Common questions
What are Mairs and Power’s 13F holdings worth?
$10,899,987,528 across 254 positions for the quarter ended 30 June 2026.
What is Mairs and Power’s largest 13F holding?
NVIDIA CORPORATION (COM) was the largest position at $941,982,058, or 8.6% of reported 13F value, as of 30 June 2026.
How concentrated is Mairs and Power’s 13F portfolio?
The ten largest positions accounted for 44.3% of reported value and the twenty-five largest for 73.2%, across 254 positions as of 30 June 2026.
Does Form 13F show everything Mairs and Power manages?
No. Form 13F covers only long positions in exchange-traded securities over which the manager has investment discretion, valued at quarter end. It excludes cash, most bonds, private funds, and any assets the firm does not have discretion over, so it is neither the firm's total assets nor any individual client's portfolio.
How often does Mairs and Power file its 13F?
Every quarter. Managers file within 45 days of each quarter's end, so the figures are a snapshot that changes between filings. This page shows the quarter ended 30 June 2026.
Answered from this filing and the prior quarter's.