GARDNER RUSSO & QUINN LLC: EUROFINS SCIENTIFIC (ERFSF): Quarterly 13F Position History
As of Q2 2026, GARDNER RUSSO & QUINN LLC reported 4,094,034 shares of EUROFINS SCIENTIFIC (ERFSF), worth $320.9M and representing 3.6% of its 13F equity book. Quarter-over-quarter share count change: + 997,630 (+32.2%) . The position first appeared in Q1 2026 and has been disclosed across 2 13F-HR filings in Pactolio's tracked window.
- 4,094,034Shares Held (Latest Filing)
- $320.9MReported Market Value (Latest Filing)
- 3.6%Portfolio Weight (% of 13F Equity Book)
- +997,630Quarter-over-Quarter Share Change
- +$97.4MQuarter-over-Quarter Value Change
- 4,094,034Peak Reported Shares (Historical)
Recent initiation: GARDNER RUSSO & QUINN LLC first reported ERFSF on the Q1 2026 filing, so fewer than three quarters of history are available.
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 2 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q2 2026 | 4,094,034 | +997,630 | +32.2% | $320.9M | 3.6% | $78.4 |
| Q1 2026 | 3,096,404 | – | – | $223.6M | 2.6% | $72.2 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares, a quarter-end mark rather than the manager's cost basis. See the full methodology document for the normalization rules.
When did GARDNER RUSSO & QUINN LLC first disclose a ERFSF position in 13F-HR filings?
GARDNER RUSSO & QUINN LLC first reported EUROFINS SCIENTIFIC (ERFSF) on its 13F-HR filing for the period ending 2026-03-31 (Q1 2026). The position has appeared on 2 reported quarters within Pactolio's tracked window.
What was GARDNER RUSSO & QUINN LLC's most recent quarter-over-quarter share-count change in ERFSF?
Between Q1 2026 and Q2 2026, GARDNER RUSSO & QUINN LLC added 997,630 shares of ERFSF (+32.2%), bringing the total reported position to 4,094,034 shares at a market value of $320.9M.
Does the implied price-per-share represent GARDNER RUSSO & QUINN LLC's cost basis in ERFSF?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.