Bio-Rad Laboratories Class A
398 hedge funds and large institutions have $5.88B invested in Bio-Rad Laboratories Class A in 2025 Q4 according to their latest regulatory filings, with 59 funds opening new positions, 105 increasing their positions, 148 reducing their positions, and 52 closing their positions.
310% more call options, than puts
Call options by funds: $9.3M | Put options by funds: $2.27M
13% more first-time investments, than exits
New positions opened: 59 | Existing positions closed: 52
8% more capital invested
Capital invested by funds: $5.46B → $5.88B (+$417M)
0% more funds holding
Funds holding: 397 → 398 (+1)
0.02% more ownership
Funds ownership: 88.56% → 88.59% (+0.02%)
20% less funds holding in top 10
Funds holding in top 10: 5 → 4 (-1)
29% less repeat investments, than reductions
Existing positions increased: 105 | Existing positions reduced: 148
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Massachusetts Financial Services
Boston,
Massachusetts
|
+$122M |
| 2 |
Boston Partners
Boston,
Massachusetts
|
+$77.3M |
| 3 |
FGP
Freestone Grove Partners
San Francisco,
California
|
+$34.5M |
| 4 |
Capital Research Global Investors
Los Angeles,
California
|
+$23.8M |
| 5 |
BNP Paribas Financial Markets
Paris,
France
|
+$21.6M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
VAM
Veritas Asset Management
London,
United Kingdom
|
-$93.8M |
| 2 |
Royal Bank of Canada
Toronto,
Ontario, Canada
|
-$50.4M |
| 3 |
ICP
Ilex Capital Partners
London,
United Kingdom
|
-$28.2M |
| 4 |
Artisan Partners
Milwaukee,
Wisconsin
|
-$24.2M |
| 5 |
Parnassus Investments
San Francisco,
California
|
-$19.7M |
BIO Hedge Fund Activity: Q4 2025 in Review
398 of the 8,267 institutional investors tracked by Wall St. Rank reported a position in Bio-Rad Laboratories Class A (BIO) for Q4 2025, worth a combined $5.88B — up 7.6% from $5.46B a quarter earlier.
Buyers outnumbered sellers: 59 funds opened new BIO positions and 52 closed out — a net gain of 7 holders — while 105 added to existing stakes and 148 trimmed.
The largest buyer was Massachusetts Financial Services, adding an estimated $122M. The largest seller was Veritas Asset Management, cutting an estimated $93.8M.
- 398 institutional investors held Bio-Rad Laboratories Class A (BIO) as of Q4 2025, up from 397 in Q3 2025.
- Funds reported $5.88B of Bio-Rad Laboratories Class A stock for Q4 2025, up 7.6% quarter-over-quarter.
- 59 funds opened new Bio-Rad Laboratories Class A positions in Q4 2025 and 52 closed out, a net change of +7 holders.
- The largest Bio-Rad Laboratories Class A buyer in Q4 2025 was Massachusetts Financial Services, an estimated $122M added.
- The largest Bio-Rad Laboratories Class A seller in Q4 2025 was Veritas Asset Management, an estimated $93.8M sold.
Based on aggregated 13F filings for Q4 2025.