# Bio-Techne (TECH): value investors who own it | moatshark

3 value investors held Bio-Techne in their Q3 2026 13F, led by Ruane, Cunniff & Goldfarb (Sequoia), Weitz Investment Management, Mairs & Power.

## 13F holders

| Manager | Portfolio | Value | Change | Quarters held |
| --- | --- | --- | --- | --- |
| Ruane, Cunniff & Goldfarb (Sequoia) | 3.7% | $237m | Trimmed -1.3% | 5 |
| Weitz Investment Management | 2.7% | $38.4m | Trimmed -17% | 9 |
| Mairs & Power | 1.8% | $191m | Trimmed -1.8% | 48 |

## Fund holders

| Fund | Manager | Weight | Value | As at |
| --- | --- | --- | --- | --- |
| Mairs & Power Small Cap Fund | Mairs & Power | 3.9% | $10.6m | 2026-06-30 |
| Sequoia Fund | Ruane, Cunniff & Goldfarb (Sequoia) | 2.7% | $97.9m | 2026-06-30 |
| Weitz Partners Value Fund | Weitz Investment Management | 2.6% | $12.7m | 2026-06-30 |
| Weitz Partners III Opportunity Fund | Weitz Investment Management | 2.5% | $8.5m | 2026-06-30 |
| Weitz Large Cap Equity Fund | Weitz Investment Management | 2.3% | $14.1m | 2026-06-30 |
| Mairs & Power Growth Fund | Mairs & Power | 1.8% | $99.3m | 2026-06-30 |

Source: SEC filings, via moatshark (https://www.moatshark.com/s/tech). Values traded and returns are estimates. Not investment advice. Built 2026-10-21.