MP
BIO icon

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

Mangrove Partners’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
Q1 		$35.4M Hold
126,853
– – 2.86% 12
2025
Q4 		$38.4M Hold
126,853
– – 3.13% 11
2025
Q3 		$35.6M Buy
+126,853
New +$34.5M 2.63% 15

Other funds holding BIO

First Eagle Investment Management
First Eagle Investment Management New York $59B AUM 32.99% 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
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
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
Capital World Investors
Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

Mangrove Partners's BIO Position: Q1 2026 in Review

Mangrove Partners held its Bio-Rad Laboratories Class A (BIO) position steady in Q1 2026 at 126,853 shares worth $35.4M. The position accounts for 2.86% of the portfolio, ranked #12.

Mangrove Partners first reported a position in BIO in Q3 2025 and has held it in 3 quarters since. The position peaked at $38.4M in Q4 2025. 391 funds tracked by Wall St. Rank hold BIO as of Q1 2026.

  • Mangrove Partners held 126,853 shares of Bio-Rad Laboratories Class A worth $35.4M as of Q1 2026.
  • Mangrove Partners left its Bio-Rad Laboratories Class A share count unchanged in Q1 2026.
  • Bio-Rad Laboratories Class A made up 2.86% of Mangrove Partners's portfolio in Q1 2026, its #12 holding.
  • Mangrove Partners first reported a position in Bio-Rad Laboratories Class A in Q3 2025 and has held it in 3 quarters since.
  • Mangrove Partners's Bio-Rad Laboratories Class A position peaked at $38.4M in Q4 2025.
  • 391 funds tracked by Wall St. Rank held Bio-Rad Laboratories Class A as of Q1 2026.

Based on Mangrove Partners's 13F filing for Q1 2026, filed 15 May 2026.