Mairs and Power's DCI Position Overview
Mairs and Power (via Mairs & Power INC) currently holds 499,374 shares of Donaldson Company, Inc. (DCI) worth $42.38 M, representing 0.43% of the portfolio. First purchased in 2013-Q2, this long-term strategic position has been held for 52 quarters.
Based on 13F filings since 2013, Mairs and Power has maintained a long-term strategic position in DCI, representing a significant commitment to this investment thesis. Largest addition occurred in Q4 2014, adding 380,074 shares. Largest reduction occurred in Q2 2020, reducing 661,605 shares.
Analysis based on 13F filings available since 2013 Q2
Mairs and Power's Donaldson Company (DCI) Holding Value Over Time
Track share changes against reported price movement
Quarterly Donaldson Company (DCI) Trades by Mairs and Power
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2026 | -61,279 | Reduce 10.93% | 499,374 | $84.87 |
| Q4 2025 | -44,786 | Reduce 7.40% | 560,653 | $88.66 |
| Q3 2025 | -224,066 | Reduce 27.01% | 605,439 | $81.85 |
| Q2 2025 | -290,644 | Reduce 25.95% | 829,505 | $69.35 |
| Q1 2025 | -189,826 | Reduce 14.49% | 1.12 M | $67.06 |
| Q4 2024 | -61,987 | Reduce 4.52% | 1.31 M | $67.35 |
| Q3 2024 | -126,858 | Reduce 8.46% | 1.37 M | $73.70 |
| Q2 2024 | -102,211 | Reduce 6.38% | 1.5 M | $71.56 |
| Q1 2024 | -287,650 | Reduce 15.23% | 1.6 M | $74.68 |
| Q4 2023 | -56,279 | Reduce 2.89% | 1.89 M | $65.35 |
| Q3 2023 | -295,595 | Reduce 13.19% | 1.94 M | $59.64 |
| Q2 2023 | -192,388 | Reduce 7.91% | 2.24 M | $62.51 |
| Q1 2023 | -373,630 | Reduce 13.31% | 2.43 M | $65.34 |
| Q4 2022 | -207,236 | Reduce 6.88% | 2.81 M | $58.87 |
| Q3 2022 | -100,198 | Reduce 3.22% | 3.01 M | $49.01 |
| Q2 2022 | -195,195 | Reduce 5.90% | 3.11 M | $48.14 |
| Q1 2022 | -16,608 | Reduce 0.50% | 3.31 M | $51.93 |
| Q4 2021 | -11,309 | Reduce 0.34% | 3.33 M | $59.26 |
| Q3 2021 | -90 | Reduce 0.00% | 3.34 M | $57.41 |
| Q2 2021 | -41,360 | Reduce 1.22% | 3.34 M | $63.53 |
| Q1 2021 | -135,266 | Reduce 3.85% | 3.38 M | $58.16 |
| Q4 2020 | -65,436 | Reduce 1.83% | 3.51 M | $55.88 |
| Q3 2020 | -109,211 | Reduce 2.96% | 3.58 M | $46.42 |
| Q2 2020 | -661,605 | Reduce 15.21% | 3.69 M | $46.52 |
| Q1 2020 | -64,097 | Reduce 1.45% | 4.35 M | $38.63 |
| Q4 2019 | -314,059 | Reduce 6.64% | 4.41 M | $57.62 |
| Q3 2019 | -272,588 | Reduce 5.45% | 4.73 M | $52.08 |
| Q2 2019 | -46,771 | Reduce 0.93% | 5 M | $50.86 |
| Q1 2019 | +53,870 | Add 1.08% | 5.05 M | $50.06 |
| Q4 2018 | -95,101 | Reduce 1.87% | 4.99 M | $43.39 |
| Q3 2018 | -311,180 | Reduce 5.76% | 5.09 M | $58.26 |
| Q2 2018 | -121,246 | Reduce 2.20% | 5.4 M | $45.12 |
| Q1 2018 | +68,475 | Add 1.26% | 5.52 M | $45.05 |
| Q4 2017 | +115,490 | Add 2.16% | 5.45 M | $48.95 |
| Q3 2017 | +78,111 | Add 1.49% | 5.34 M | $45.94 |
| Q2 2017 | +2,983 | Add 0.06% | 5.26 M | $45.54 |
| Q1 2017 | -84,376 | Reduce 1.58% | 5.26 M | $45.52 |
| Q4 2016 | -262,097 | Reduce 4.68% | 5.34 M | $42.08 |
| Q3 2016 | -63,454 | Reduce 1.12% | 5.6 M | $37.33 |
| Q2 2016 | +215,421 | Add 3.95% | 5.67 M | $34.36 |
| Q1 2016 | +95,558 | Add 1.78% | 5.45 M | $31.91 |
| Q4 2015 | +50,973 | Add 0.96% | 5.36 M | $28.66 |
| Q3 2015 | +87,730 | Add 1.68% | 5.3 M | $28.08 |
| Q2 2015 | +25,287 | Add 0.49% | 5.22 M | $35.80 |
| Q1 2015 | +116,945 | Add 2.30% | 5.19 M | $37.71 |
| Q4 2014 | +380,074 | Add 8.10% | 5.07 M | $38.63 |
| Q3 2014 | +187,654 | Add 4.16% | 4.69 M | $40.63 |
| Q2 2014 | +257,680 | Add 6.06% | 4.51 M | $42.32 |
| Q1 2014 | -4,532 | Reduce 0.11% | 4.25 M | $42.40 |
| Q4 2013 | +116,688 | Add 2.82% | 4.25 M | $43.46 |
| Q3 2013 | +217,695 | Add 5.55% | 4.14 M | $38.13 |
| Q2 2013 | +3.92 M | Add 0.00% | 3.92 M | $35.66 |
Mairs and Power's Donaldson Company Investment FAQs
Mairs and Power first purchased Donaldson Company, Inc. (DCI) in Q2 2013, acquiring 3,918,954 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Mairs and Power has held Donaldson Company, Inc. (DCI) for 52 quarters since Q2 2013.
Mairs and Power's largest addition to Donaldson Company, Inc. (DCI) was in Q2 2013, adding 3,918,954 shares worth $139.75 M.
According to the latest 13F filing for Q1 2026, Mairs and Power's firm, Mairs & Power INC, owns 499,374 shares of Donaldson Company, Inc. (DCI), valued at approximately $42.38 M.
As of the Q1 2026 filing, Donaldson Company, Inc. (DCI) represents approximately 0.43% of Mairs and Power's publicly disclosed stock portfolio, making it one of their key holdings.
Mairs and Power's peak holding in Donaldson Company, Inc. (DCI) was 5,666,127 shares, as reported at the end of Q2 2016.