David Shaw’s Bio-Rad Laboratories Class A BIO Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | $5.65M | Buy |
19,256
+11,111
| +136% | +$3.15M | ﹤0.01% | 2296 |
|
|
2026
Q1 | $2.27M | Buy |
8,145
+3,315
| +69% | +$955K | ﹤0.01% | 2825 |
|
|
2025
Q4 | $1.46M | Buy |
4,830
+1,530
| +46% | +$477K | ﹤0.01% | 3283 |
|
|
2025
Q3 | $925K | Hold |
3,300
| – | – | ﹤0.01% | 3503 |
|
|
2025
Q2 | $796K | Sell |
3,300
-15,625
| -83% | -$3.69M | ﹤0.01% | 3390 |
|
|
2025
Q1 | $4.61M | Sell |
18,925
-5,700
| -23% | -$1.71M | ﹤0.01% | 1958 |
|
|
2024
Q4 | $8.09M | Buy |
24,625
+7,837
| +47% | +$2.66M | 0.01% | 1636 |
|
|
2024
Q3 | $5.62M | Sell |
16,788
-26,188
| -61% | -$8.32M | ﹤0.01% | 1856 |
|
|
2024
Q2 | $11.7M | Sell |
42,976
-3,649
| -8% | -$1.06M | 0.01% | 1238 |
|
|
2024
Q1 | $16.1M | Sell |
46,625
-12,729
| -21% | -$4.19M | 0.01% | 1055 |
|
|
2023
Q4 | $19.2M | Buy |
59,354
+47,242
| +390% | +$14.8M | 0.02% | 948 |
|
|
2023
Q3 | $4.34M | Buy |
12,112
+809
| +7% | +$312K | ﹤0.01% | 1930 |
|
|
2023
Q2 | $4.29M | Sell |
11,303
-3,898
| -26% | -$1.59M | ﹤0.01% | 1983 |
|
|
2023
Q1 | $7.28M | Sell |
15,201
-33,557
| -69% | -$15.7M | 0.01% | 1630 |
|
|
2022
Q4 | $20.5M | Buy |
48,758
+33,437
| +218% | +$13.5M | 0.02% | 900 |
|
|
2022
Q3 | $6.39M | Sell |
15,321
-2,897
| -16% | -$1.44M | 0.01% | 1805 |
|
|
2022
Q2 | $9.02M | Sell |
18,218
-9,718
| -35% | -$5.06M | 0.01% | 1492 |
|
|
2022
Q1 | $15.7M | Buy |
27,936
+17,807
| +176% | +$10.7M | 0.01% | 1204 |
|
|
2021
Q4 | $7.65M | Buy |
10,129
+3,191
| +46% | +$2.39M | 0.01% | 1928 |
|
|
2021
Q3 | $5.17M | Sell |
6,938
-6,246
| -47% | -$4.68M | ﹤0.01% | 2074 |
|
|
2021
Q2 | $8.49M | Buy |
13,184
+7,392
| +128% | +$4.5M | 0.01% | 1637 |
|
|
2021
Q1 | $3.31M | Sell |
5,792
-2,122
| -27% | -$1.26M | ﹤0.01% | 2159 |
|
|
2020
Q4 | $4.61M | Sell |
7,914
-17
| -0.2% | -$9.68K | ﹤0.01% | 1938 |
|
|
2020
Q3 | $4.09M | Sell |
7,931
-471
| -6% | -$239K | ﹤0.01% | 1849 |
|
|
2020
Q2 | $3.79M | Sell |
8,402
-1,026
| -11% | -$453K | ﹤0.01% | 1874 |
|
|
2020
Q1 | $3.31M | Sell |
9,428
-3,146
| -25% | -$1.16M | 0.01% | 1780 |
|
|
2019
Q4 | $4.65M | Sell |
12,574
-8,659
| -41% | -$3.05M | 0.01% | 1791 |
|
|
2019
Q3 | $7.07M | Sell |
21,233
-81,440
| -79% | -$26.6M | 0.01% | 1397 |
|
|
2019
Q2 | $32.1M | Buy |
102,673
+7,477
| +8% | +$2.24M | 0.04% | 527 |
|
|
2019
Q1 | $29.1M | Sell |
95,196
-133,900
| -58% | -$36.1M | 0.04% | 556 |
|
|
2018
Q4 | $53.2M | Buy |
229,096
+38,604
| +20% | +$10.4M | 0.07% | 327 |
|
|
2018
Q3 | $59.6M | Buy |
190,492
+108,255
| +132% | +$33.6M | 0.07% | 339 |
|
|
2018
Q2 | $23.7M | Sell |
82,237
-27,327
| -25% | -$7.55M | 0.03% | 630 |
|
|
2018
Q1 | $27.4M | Sell |
109,564
-26,638
| -20% | -$6.78M | 0.04% | 536 |
|
|
2017
Q4 | $32.5M | Buy |
136,202
+124,666
| +1,081% | +$30.2M | 0.04% | 480 |
|
|
2017
Q3 | $2.56M | Sell |
11,536
-1,400
| -11% | -$315K | ﹤0.01% | 1847 |
|
|
2017
Q2 | $2.93M | Sell |
12,936
-2,403
| -16% | -$524K | ﹤0.01% | 1726 |
|
|
2017
Q1 | $3.06M | Sell |
15,339
-900
| -6% | -$173K | 0.01% | 1597 |
|
|
2016
Q4 | $2.96M | Sell |
16,239
-1,618
| -9% | -$276K | 0.01% | 1711 |
|
|
2016
Q3 | $2.92M | Sell |
17,857
-5,646
| -24% | -$857K | 0.01% | 1643 |
|
|
2016
Q2 | $3.36M | Sell |
23,503
-39,761
| -63% | -$5.67M | 0.01% | 1558 |
|
|
2016
Q1 | $8.65M | Buy |
63,264
+24,363
| +63% | +$3.2M | 0.02% | 941 |
|
|
2015
Q4 | $5.39M | Buy |
38,901
+4,721
| +14% | +$654K | 0.01% | 1353 |
|
|
2015
Q3 | $4.59M | Sell |
34,180
-1,518
| -4% | -$218K | 0.01% | 1461 |
|
|
2015
Q2 | $5.38M | Buy |
35,698
+22,553
| +172% | +$3.23M | 0.01% | 1413 |
|
|
2015
Q1 | $1.78M | Sell |
13,145
-4,765
| -27% | -$591K | ﹤0.01% | 2110 |
|
|
2014
Q4 | $2.16M | Sell |
17,910
-10,037
| -36% | -$1.16M | ﹤0.01% | 2219 |
|
|
2014
Q3 | $3.17M | Buy |
27,947
+12,196
| +77% | +$1.45M | ﹤0.01% | 1874 |
|
|
2014
Q2 | $1.89M | Buy |
15,751
+6,767
| +75% | +$826K | ﹤0.01% | 2356 |
|
|
2014
Q1 | $1.15M | Sell |
8,984
-31,676
| -78% | -$4.06M | ﹤0.01% | 2893 |
|
|
2013
Q4 | $5.03M | Sell |
40,660
-24,183
| -37% | -$2.95M | 0.01% | 1667 |
|
|
2013
Q3 | $7.62M | Buy |
64,843
+35,102
| +118% | +$4.14M | 0.01% | 1236 |
|
|
2013
Q2 | $3.34M | Buy |
+29,741
| New | +$3.49M | 0.01% | 1666 |
|
Other funds holding BIO
AI
David Shaw's BIO Position: Q2 2026 in Review
David Shaw increased its Bio-Rad Laboratories Class A (BIO) stake by 136% in Q2 2026, buying an estimated $3.15M and bringing the position to 19,256 shares worth $5.65M. The position accounts for ﹤0.01% of the portfolio, ranked #2296.
David Shaw first reported a position in BIO in Q2 2013 and has held it in 53 quarters since. The position peaked at $59.6M in Q3 2018. 396 funds tracked by Wall St. Rank hold BIO as of Q2 2026.
- David Shaw held 19,256 shares of Bio-Rad Laboratories Class A worth $5.65M as of Q2 2026.
- David Shaw bought 11,111 Bio-Rad Laboratories Class A shares in Q2 2026, an estimated $3.15M.
- Bio-Rad Laboratories Class A made up ﹤0.01% of David Shaw's portfolio in Q2 2026, its #2296 holding.
- David Shaw first reported a position in Bio-Rad Laboratories Class A in Q2 2013 and has held it in 53 quarters since.
- David Shaw's Bio-Rad Laboratories Class A position peaked at $59.6M in Q3 2018.
- 396 funds tracked by Wall St. Rank held Bio-Rad Laboratories Class A as of Q2 2026.
Based on D.E. Shaw & Co's 13F filing for Q2 2026, filed 14 Aug 2026.