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Lee Ainslie’s Caribou Biosciences CRBU Stock Holding History

Lee Ainslie’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 		$1.15M Hold
652,542
– – 0.01% 105
2026
Q1 		$1.24M Hold
652,542
– – 0.01% 120
2025
Q4 		$1.04M Hold
652,542
– – 0.01% 161
2025
Q3 		$1.52M Hold
652,542
– – 0.02% 181
2025
Q2 		$822K Hold
652,542
– – 0.01% 184
2025
Q1 		$596K Hold
652,542
– – 0.01% 198
2024
Q4 		$1.04M Hold
652,542
– – 0.02% 126
2024
Q3 		$1.28M Hold
652,542
– – 0.02% 181
2024
Q2 		$1.07M Hold
652,542
– – 0.02% 209
2024
Q1 		$3.35M Hold
652,542
– – 0.06% 70
2023
Q4 		$3.74M Hold
652,542
– – 0.08% 60
2023
Q3 		$3.12M Hold
652,542
– – 0.07% 55
2023
Q2 		$2.77M Hold
652,542
– – 0.06% 87
2023
Q1 		$3.46M Hold
652,542
– – 0.09% 59
2022
Q4 		$4.1M Hold
652,542
– – 0.1% 63
2022
Q3 		$6.88M Hold
652,542
– – 0.16% 55
2022
Q2 		$3.54M Hold
652,542
– – 0.09% 75
2022
Q1 		$5.99M Hold
652,542
– – 0.11% 71
2021
Q4 		$9.75M Sell
652,542
-300,000
-31% -$5.83M 0.11% 74
2021
Q3 		$21.8M Buy
+952,542
New +$23.3M 0.22% 64

Other funds holding CRBU

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
P
Pfizer New York $170M AUM 191.09% 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

Lee Ainslie's CRBU Position: Q2 2026 in Review

Lee Ainslie held its Caribou Biosciences (CRBU) position steady in Q2 2026 at 652,542 shares worth $1.15M. The position accounts for 0.01% of the portfolio, ranked #105.

Lee Ainslie first reported a position in CRBU in Q3 2021 and has held it in 20 quarters since. The position peaked at $21.8M in Q3 2021. 137 funds tracked by Wall St. Rank hold CRBU as of Q2 2026.

  • Lee Ainslie held 652,542 shares of Caribou Biosciences worth $1.15M as of Q2 2026.
  • Lee Ainslie left its Caribou Biosciences share count unchanged in Q2 2026.
  • Caribou Biosciences made up 0.01% of Lee Ainslie's portfolio in Q2 2026, its #105 holding.
  • Lee Ainslie first reported a position in Caribou Biosciences in Q3 2021 and has held it in 20 quarters since.
  • Lee Ainslie's Caribou Biosciences position peaked at $21.8M in Q3 2021.
  • 137 funds tracked by Wall St. Rank held Caribou Biosciences as of Q2 2026.

Based on Maverick Capital's 13F filing for Q2 2026, filed 14 Aug 2026.