Twin Tree Management
BIO icon

Twin Tree Management’s Bio-Rad Laboratories Class A BIO Stock Holding History

Twin Tree Management’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
2021
Q3 		– Sell
-4,200
Closed -$2.71M – 1563
2021
Q2 		$2.71M Sell
4,200
-5,900
-58% -$3.59M 0.01% 825
2021
Q1 		$5.77M Buy
+10,100
New +$5.98M 0.02% 610
2019
Q3 		– Sell
-800
Closed -$250K – 1229
2019
Q2 		$250K Buy
+800
New +$240K ﹤0.01% 946

Other funds holding BIO

First Eagle Investment Management
First Eagle Investment Management New York $59B AUM 32.99% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
VAM
Veritas Asset Management London, United Kingdom $5.9B AUM 3.19% 1-Year Est. Return
AI
Ariel Investments Chicago, Illinois $8.93B AUM 29.58% 1-Year Est. Return
EARNEST Partners
EARNEST Partners Atlanta, Georgia $24.3B AUM 34.41% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return
FPA
First Pacific Advisors El Segundo, California $7.14B AUM 21.51% 1-Year Est. Return

Twin Tree Management's BIO Position: Q2 2025 in Review

Twin Tree Management sold out of Bio-Rad Laboratories Class A (BIO) in Q2 2025, closing a stake of 357 shares — an estimated $87K sold.

Twin Tree Management first reported a position in BIO in Q4 2017 and held it in 12 quarters. The position peaked at $9.17M in Q4 2023. 383 funds tracked by Wall St. Rank hold BIO as of Q2 2025.

  • Twin Tree Management reported no remaining Bio-Rad Laboratories Class A position as of Q2 2025 after selling out during the quarter.
  • Twin Tree Management sold 357 Bio-Rad Laboratories Class A shares in Q2 2025, an estimated $87K.
  • Twin Tree Management first reported a position in Bio-Rad Laboratories Class A in Q4 2017 and held it in 12 quarters.
  • Twin Tree Management's Bio-Rad Laboratories Class A position peaked at $9.17M in Q4 2023.
  • 383 funds tracked by Wall St. Rank held Bio-Rad Laboratories Class A as of Q2 2025.

Based on Twin Tree Management's 13F filing for Q2 2025, filed 28 Jul 2025.