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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
Q2 		$7.88M Hold
4,690,431
– – 4.63% 7
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

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Mackenzie Financial
Mackenzie Financial Toronto Ontario, Ontario, Canada $100B AUM 36.93% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
KCM
Kynam Capital Management Princeton, New Jersey $1.81B AUM 192.15% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 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
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return

Pfizer's CRBU Position: Q2 2026 in Review

Pfizer held its Caribou Biosciences (CRBU) position steady in Q2 2026 at 4,690,431 shares worth $7.88M. The position accounts for 4.63% of the portfolio, ranked #7.

Pfizer first reported a position in CRBU in Q4 2024 and has held it in 7 quarters since. The position peaked at $10.9M in Q3 2025. 137 funds tracked by Wall St. Rank hold CRBU as of Q2 2026.

  • Pfizer held 4,690,431 shares of Caribou Biosciences worth $7.88M as of Q2 2026.
  • Pfizer left its Caribou Biosciences share count unchanged in Q2 2026.
  • Caribou Biosciences made up 4.63% of Pfizer's portfolio in Q2 2026, its #7 holding.
  • Pfizer first reported a position in Caribou Biosciences in Q4 2024 and has held it in 7 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 Q2 2026.

Based on Pfizer's 13F filing for Q2 2026, filed 13 Aug 2026.