Mariner
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Mariner’s Bio-Rad Laboratories Class A BIO Stock Holding History

Mariner’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
2025
Q2 		– Sell
-2,449
Closed -$596K – 3496
2025
Q1 		$596K Sell
2,449
-517
-17% -$156K ﹤0.01% 2065
2024
Q4 		$974K Buy
2,966
+25
+0.9% +$8.49K ﹤0.01% 1668
2024
Q3 		$984K Buy
2,941
+34
+1% +$10.8K ﹤0.01% 1615
2024
Q2 		$794K Buy
2,907
+80
+3% +$23.3K ﹤0.01% 1675
2024
Q1 		$978K Buy
2,827
+102
+4% +$33.5K ﹤0.01% 1513
2023
Q4 		$880K Sell
2,725
-549
-17% -$172K ﹤0.01% 1518
2023
Q3 		$1.17M Buy
3,274
+151
+5% +$58.3K ﹤0.01% 1235
2023
Q2 		$1.18M Sell
3,123
-834
-21% -$339K ﹤0.01% 1205
2023
Q1 		$1.9M Buy
3,957
+267
+7% +$125K 0.01% 985
2022
Q4 		$1.55M Buy
3,690
+1,180
+47% +$476K 0.01% 1026
2022
Q3 		$1.05M Buy
+2,510
New +$1.25M ﹤0.01% 1028
2019
Q3 		– Sell
-853
Closed -$267K – 722
2019
Q2 		$267K Buy
853
+33
+4% +$9.88K ﹤0.01% 924
2019
Q1 		$251K Buy
+820
New +$221K ﹤0.01% 879

Other funds holding BIO

First Eagle Investment Management
First Eagle Investment Management New York $60.8B AUM 26.63% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 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
VAM
Veritas Asset Management London, United Kingdom $5.56B AUM 3.46% 1-Year Est. Return
AI
Ariel Investments Chicago, Illinois $10B AUM 42.59% 1-Year Est. Return
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
FPA
First Pacific Advisors El Segundo, California $8.09B AUM 21.95% 1-Year Est. Return

Mariner's BIO Position: Q2 2025 in Review

Mariner sold out of Bio-Rad Laboratories Class A (BIO) in Q2 2025, closing a stake of 2,449 shares — an estimated $596K sold.

Mariner first reported a position in BIO in Q1 2019 and held it in 13 quarters. The position peaked at $1.9M in Q1 2023. 384 funds tracked by Wall St. Rank hold BIO as of Q2 2025.

  • Mariner reported no remaining Bio-Rad Laboratories Class A position as of Q2 2025 after selling out during the quarter.
  • Mariner sold 2,449 Bio-Rad Laboratories Class A shares in Q2 2025, an estimated $596K.
  • Mariner first reported a position in Bio-Rad Laboratories Class A in Q1 2019 and held it in 13 quarters.
  • Mariner's Bio-Rad Laboratories Class A position peaked at $1.9M in Q1 2023.
  • 384 funds tracked by Wall St. Rank held Bio-Rad Laboratories Class A as of Q2 2025.

Based on Mariner's 13F filing for Q2 2025, filed 14 Aug 2025.