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Campbell & Co Investment Adviser’s Bio-Rad Laboratories Class A BIO Stock Holding History

Campbell & Co Investment Adviser’s Portfolio BIO Stock Details BIO Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$4.13M Buy
+14,056
New +$3.99M 0.22% 114
2026
Q1 		– Sell
-31,478
Closed -$9.54M – 1084
2025
Q4 		$9.54M Buy
31,478
+29,238
+1,305% +$9.12M 0.46% 17
2025
Q3 		$628K Buy
+2,240
New +$610K 0.05% 626
2025
Q2 		– Sell
-6,443
Closed -$1.57M – 1149
2025
Q1 		$1.57M Buy
+6,443
New +$1.94M 0.12% 265
2024
Q1 		– Sell
-8,080
Closed -$2.61M – 1113
2023
Q4 		$2.61M Buy
+8,080
New +$2.53M 0.24% 75
2023
Q3 		– Sell
-1,317
Closed -$499K – 951
2023
Q2 		$499K Buy
+1,317
New +$536K 0.09% 438
2022
Q3 		– Sell
-1,167
Closed -$578K – 712
2022
Q2 		$578K Buy
1,167
+502
+75% +$261K 0.16% 227
2022
Q1 		$375K Buy
+665
New +$401K 0.1% 385
2021
Q4 		– Sell
-350
Closed -$261K – 625
2021
Q3 		$261K Sell
350
-450
-56% -$337K 0.09% 418
2021
Q2 		$515K Buy
+800
New +$487K 0.21% 150
2020
Q1 		– Sell
-1,249
Closed -$462K – 71
2019
Q4 		$462K Buy
+1,249
New +$440K 0.14% 257
2014
Q3 		– Sell
-4,821
Closed -$577K – 194
2014
Q2 		$577K Buy
+4,821
New +$589K 0.23% 117
2013
Q4 		– Sell
-1,745
Closed -$205K – 219
2013
Q3 		$205K Sell
1,745
-2,621
-60% -$309K 0.04% 221
2013
Q2 		$490K Buy
+4,366
New +$512K 0.09% 211

Other funds holding BIO

First Eagle Investment Management
First Eagle Investment Management New York $60.8B AUM 26.63% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
AI
Ariel Investments Chicago, Illinois $10B AUM 42.59% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
EARNEST Partners
EARNEST Partners Atlanta, Georgia $27.7B AUM 52.44% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return

Campbell & Co Investment Adviser's BIO Position: Q2 2026 in Review

Campbell & Co Investment Adviser opened a new position in Bio-Rad Laboratories Class A (BIO) in Q2 2026: 14,056 shares worth $4.13M. The stake represents 0.22% of the portfolio and ranks #114 among its holdings. This is a return to the name: Campbell & Co Investment Adviser previously reported a position in BIO as recently as Q4 2025.

Campbell & Co Investment Adviser first reported a position in BIO in Q2 2013 and has held it in 14 quarters since. The position peaked at $9.54M in Q4 2025. 398 funds tracked by Wall St. Rank hold BIO as of Q2 2026.

  • Campbell & Co Investment Adviser held 14,056 shares of Bio-Rad Laboratories Class A worth $4.13M as of Q2 2026.
  • Bio-Rad Laboratories Class A was a new Campbell & Co Investment Adviser position in Q2 2026.
  • Bio-Rad Laboratories Class A made up 0.22% of Campbell & Co Investment Adviser's portfolio in Q2 2026, its #114 holding.
  • Campbell & Co Investment Adviser first reported a position in Bio-Rad Laboratories Class A in Q2 2013 and has held it in 14 quarters since.
  • Campbell & Co Investment Adviser's Bio-Rad Laboratories Class A position peaked at $9.54M in Q4 2025.
  • 398 funds tracked by Wall St. Rank held Bio-Rad Laboratories Class A as of Q2 2026.

Based on Campbell & Co Investment Adviser's 13F filing for Q2 2026, filed 3 Aug 2026.