Mairs and Power's TECH Position Overview
Mairs and Power (via Mairs & Power INC) currently holds 2.77 M shares of Bio-Techne Corporation (TECH) worth $162.76 M, representing 1.57% of the portfolio. First purchased in 2014-Q3, this long-term strategic position has been held for 46 quarters.
Based on 13F filings since 2013, Mairs and Power has maintained a long-term strategic position in TECH, representing a significant commitment to this investment thesis. Largest addition occurred in Q4 2014, adding 821,592 shares. Largest reduction occurred in Q2 2020, reducing 487,964 shares.
Analysis based on 13F filings available since 2013 Q2
Mairs and Power's Bio-Techne Corporation (TECH) Holding Value Over Time
Track share changes against reported price movement
Quarterly Bio-Techne Corporation (TECH) Trades by Mairs and Power
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q4 2025 | -39,870 | Reduce 1.42% | 2.77 M | $58.81 |
| Q3 2025 | +91,031 | Add 3.35% | 2.81 M | $55.63 |
| Q2 2025 | +64,585 | Add 2.44% | 2.72 M | $51.45 |
| Q1 2025 | -21,975 | Reduce 0.82% | 2.65 M | $58.63 |
| Q4 2024 | -23,028 | Reduce 0.85% | 2.67 M | $72.03 |
| Q3 2024 | -43,596 | Reduce 1.59% | 2.7 M | $79.93 |
| Q2 2024 | -218,965 | Reduce 7.40% | 2.74 M | $71.65 |
| Q1 2024 | -120,126 | Reduce 3.90% | 2.96 M | $70.39 |
| Q4 2023 | +25,903 | Add 0.85% | 3.08 M | $77.16 |
| Q3 2023 | -6,058 | Reduce 0.20% | 3.05 M | $68.07 |
| Q2 2023 | +33,660 | Add 1.11% | 3.06 M | $81.63 |
| Q1 2023 | +214,948 | Add 7.65% | 3.03 M | $74.19 |
| Q4 2022 | +116,550 | Add 4.33% | 2.81 M | $82.88 |
| Q3 2022 | +70,760 | Add 2.70% | 2.69 M | $71.00 |
| Q2 2022 | -8,128 | Reduce 0.31% | 2.62 M | $86.66 |
| Q1 2022 | +16,588 | Add 0.63% | 2.63 M | $108.26 |
| Q4 2021 | -35,276 | Reduce 1.33% | 2.62 M | $129.33 |
| Q3 2021 | -264,808 | Reduce 9.08% | 2.65 M | $121.14 |
| Q2 2021 | -164,796 | Reduce 5.35% | 2.92 M | $112.57 |
| Q1 2021 | -312,184 | Reduce 9.20% | 3.08 M | $95.48 |
| Q4 2020 | -29,208 | Reduce 0.85% | 3.39 M | $79.39 |
| Q3 2020 | -186,300 | Reduce 5.16% | 3.42 M | $61.93 |
| Q2 2020 | -487,964 | Reduce 11.91% | 3.61 M | $66.02 |
| Q1 2020 | +83,988 | Add 2.09% | 4.1 M | $47.40 |
| Q4 2019 | -149,372 | Reduce 3.59% | 4.01 M | $54.88 |
| Q3 2019 | -111,404 | Reduce 2.61% | 4.16 M | $48.92 |
| Q2 2019 | -342,416 | Reduce 7.42% | 4.27 M | $52.12 |
| Q1 2019 | -146,448 | Reduce 3.08% | 4.62 M | $49.64 |
| Q4 2018 | +77,948 | Add 1.66% | 4.76 M | $36.18 |
| Q3 2018 | -483,208 | Reduce 9.35% | 4.68 M | $51.03 |
| Q2 2018 | -346,680 | Reduce 6.29% | 5.17 M | $36.99 |
| Q1 2018 | -224,840 | Reduce 3.92% | 5.51 M | $37.76 |
| Q4 2017 | -39,692 | Reduce 0.69% | 5.74 M | $32.39 |
| Q3 2017 | -18,028 | Reduce 0.31% | 5.78 M | $30.22 |
| Q2 2017 | +236,548 | Add 4.25% | 5.8 M | $29.38 |
| Q1 2017 | +84,800 | Add 1.55% | 5.56 M | $25.41 |
| Q4 2016 | +6,204 | Add 0.11% | 5.47 M | $25.71 |
| Q3 2016 | +63,340 | Add 1.17% | 5.47 M | $27.37 |
| Q2 2016 | +162,760 | Add 3.10% | 5.41 M | $28.19 |
| Q1 2016 | +14,756 | Add 0.28% | 5.24 M | $23.63 |
| Q4 2015 | +53,444 | Add 1.03% | 5.23 M | $22.50 |
| Q3 2015 | -335,672 | Reduce 6.09% | 5.17 M | $23.11 |
| Q2 2015 | -8,980 | Reduce 0.16% | 5.51 M | $24.62 |
| Q1 2015 | +337,068 | Add 6.50% | 5.52 M | $25.07 |
| Q4 2014 | +821,592 | Add 18.84% | 5.18 M | $23.10 |
| Q3 2014 | +4.36 M | New Buy | 4.36 M | $23.39 |
Mairs and Power's Bio-Techne Corporation Investment FAQs
Mairs and Power first purchased Bio-Techne Corporation (TECH) in Q3 2014, acquiring 4,360,088 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 Bio-Techne Corporation (TECH) for 46 quarters since Q3 2014.
Mairs and Power's largest addition to Bio-Techne Corporation (TECH) was in Q3 2014, adding 4,360,088 shares worth $101.97 M.
According to the latest 13F filing for Q4 2025, Mairs and Power's firm, Mairs & Power INC, owns 2,767,539 shares of Bio-Techne Corporation (TECH), valued at approximately $162.76 M.
As of the Q4 2025 filing, Bio-Techne Corporation (TECH) represents approximately 1.57% of Mairs and Power's publicly disclosed stock portfolio, making it one of their key holdings.
Mairs and Power's peak holding in Bio-Techne Corporation (TECH) was 5,795,948 shares, as reported at the end of Q2 2017.