Bio-Rad Laboratories Class B
BIO.B
6 hedge funds and large institutions have $861K invested in Bio-Rad Laboratories Class B in 2025 Q4 according to their latest regulatory filings, with 1 funds opening new positions, increasing their positions, 2 reducing their positions, and 0 closing their positions.
20% more funds holding
Funds holding: 5 → 6 (+1)
6% more capital invested
Capital invested by funds: $809K → $861K (+$51.4K)
0% less ownership
Funds ownership: 0.06% → 0.06% (-0%)
100% less repeat investments, than reductions
Existing positions increased: 0 | Existing positions reduced: 2
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
UBS Group
Zurich,
Switzerland
|
+$2.48K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
CL
CSS LLC
Chicago,
Illinois
|
-$16.7K |
| 2 |
Morgan Stanley
New York
|
-$4.65K |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
CL
1
CSS LLC
Chicago,
Illinois
| $319K | -$16.7K | -54 | -5% |
|
2
Focus Partners Wealth
Boston,
Massachusetts
| $227K | – | – | – |
|
|
3
Morgan Stanley
New York
| $208K | -$4.65K | -15 | -2% |
|
4
Wells Fargo
San Francisco,
California
| $52.8K | – | – | – |
|
|
WT
5
Whittier Trust
South Pasadena,
California
| $51.6K | – | – | – |
|
|
6
UBS Group
Zurich,
Switzerland
| $2.39K | +$2.48K | +8 | New |
|
BIO.B Hedge Fund Activity: Q4 2025 in Review
6 of the 8,252 institutional investors tracked by Wall St. Rank reported a position in Bio-Rad Laboratories Class B (BIO.B) for Q4 2025, worth a combined $861K — up 6.4% from $809K a quarter earlier.
Buyers outnumbered sellers: 1 fund opened new BIO.B positions and 0 closed out — a net gain of 1 holder — while 0 added to existing stakes and 2 trimmed.
The largest buyer was UBS Group, opening a new position worth an estimated $2.48K. The largest seller was CSS LLC, cutting an estimated $16.7K.
- 6 institutional investors held Bio-Rad Laboratories Class B (BIO.B) as of Q4 2025, up from 5 in Q3 2025.
- Funds reported $861K of Bio-Rad Laboratories Class B stock for Q4 2025, up 6.4% quarter-over-quarter.
- 1 fund opened new Bio-Rad Laboratories Class B positions in Q4 2025 and 0 closed out, a net change of +1 holder.
- The largest Bio-Rad Laboratories Class B buyer in Q4 2025 was UBS Group, an estimated $2.48K added.
- The largest Bio-Rad Laboratories Class B seller in Q4 2025 was CSS LLC, an estimated $16.7K sold.
Based on aggregated 13F filings for Q4 2025.