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Pfizer’s Caribou Biosciences CRBU Stock Holding History

Pfizer’s Portfolio CRBU Stock Details CRBU Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$8.35M Hold
4,690,431
– – 3.5% 8
2025
Q4 		$7.46M Hold
4,690,431
– – 3.15% 8
2025
Q3 		$10.9M Hold
4,690,431
– – 2.5% 10
2025
Q2 		$5.91M Hold
4,690,431
– – 1.03% 11
2025
Q1 		$4.28M Hold
4,690,431
– – 0.86% 10
2024
Q4 		$7.46M Buy
+4,690,431
New +$9.43M 0.29% 12

Other funds holding CRBU

VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
KCM
Kynam Capital Management Princeton, New Jersey $1.62B AUM 138.67% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return
Aberdeen Group
Aberdeen Group Edinburgh, United Kingdom $61.9B AUM 29.81% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Pfizer's CRBU Position: Q1 2026 in Review

Pfizer held its Caribou Biosciences (CRBU) position steady in Q1 2026 at 4,690,431 shares worth $8.35M. The position accounts for 3.5% of the portfolio, ranked #8.

Pfizer first reported a position in CRBU in Q4 2024 and has held it in 6 quarters since. The position peaked at $10.9M in Q3 2025. 137 funds tracked by Wall St. Rank hold CRBU as of Q1 2026.

  • Pfizer held 4,690,431 shares of Caribou Biosciences worth $8.35M as of Q1 2026.
  • Pfizer left its Caribou Biosciences share count unchanged in Q1 2026.
  • Caribou Biosciences made up 3.5% of Pfizer's portfolio in Q1 2026, its #8 holding.
  • Pfizer first reported a position in Caribou Biosciences in Q4 2024 and has held it in 6 quarters since.
  • Pfizer's Caribou Biosciences position peaked at $10.9M in Q3 2025.
  • 137 funds tracked by Wall St. Rank held Caribou Biosciences as of Q1 2026.

Based on Pfizer's 13F filing for Q1 2026, filed 12 May 2026.