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RK Asset Management’s Bio-Rad Laboratories Class A BIO Stock Holding History

RK Asset 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
2025
Q4 		$4.42M Buy
14,573
+71
+0.5% +$22.2K 4.17% 11
2025
Q3 		$4.07M Hold
14,502
– – 3.7% 14
2025
Q2 		$3.5M Buy
14,502
+113
+0.8% +$26.7K 3.37% 16
2025
Q1 		$3.5M Sell
14,389
-237
-2% -$71.3K 3.24% 18
2024
Q4 		$4.8M Sell
14,626
-911
-6% -$309K 3.93% 15
2024
Q3 		$5.2M Buy
+15,537
New +$4.93M 4% 15

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
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
VAM
Veritas Asset Management London, United Kingdom $5.9B AUM 3.19% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

RK Asset Management's BIO Position: Q4 2025 in Review

RK Asset Management increased its Bio-Rad Laboratories Class A (BIO) stake by 0.49% in Q4 2025, buying an estimated $22.2K and bringing the position to 14,573 shares worth $4.42M. The position accounts for 4.17% of the portfolio, ranked #11.

RK Asset Management first reported a position in BIO in Q3 2024 and has held it in 6 quarters since. The position peaked at $5.2M in Q3 2024. 396 funds tracked by Wall St. Rank hold BIO as of Q4 2025.

  • RK Asset Management held 14,573 shares of Bio-Rad Laboratories Class A worth $4.42M as of Q4 2025.
  • RK Asset Management bought 71 Bio-Rad Laboratories Class A shares in Q4 2025, an estimated $22.2K.
  • Bio-Rad Laboratories Class A made up 4.17% of RK Asset Management's portfolio in Q4 2025, its #11 holding.
  • RK Asset Management first reported a position in Bio-Rad Laboratories Class A in Q3 2024 and has held it in 6 quarters since.
  • RK Asset Management's Bio-Rad Laboratories Class A position peaked at $5.2M in Q3 2024.
  • 396 funds tracked by Wall St. Rank held Bio-Rad Laboratories Class A as of Q4 2025.

Based on RK Asset Management's 13F filing for Q4 2025, filed 5 Jan 2026.