Russell Investments Group
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Russell Investments Group’s Caribou Biosciences CRBU Stock Holding History

Russell Investments Group’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 		$52.4K Buy
27,560
+3,213
+13% +$5.51K ﹤0.01% 3303
2025
Q4 		$38.7K Buy
24,347
+10,824
+80% +$22.7K ﹤0.01% 3392
2025
Q3 		$31.5K Sell
13,523
-9,049
-40% -$17.1K ﹤0.01% 3446
2025
Q2 		$28.4K Sell
22,572
-1,108
-5% -$1.09K ﹤0.01% 3119
2025
Q1 		$21.6K Sell
23,680
-229
-1% -$298 ﹤0.01% 3095
2024
Q4 		$38K Buy
23,909
+21,416
+859% +$43.1K ﹤0.01% 2880
2024
Q3 		$4.89K Buy
2,493
+647
+35% +$1.32K ﹤0.01% 3216
2024
Q2 		$3.03K Buy
+1,846
New +$5.9K ﹤0.01% 3302
2023
Q3 		– Sell
-1,716
Closed -$7.29K – 3548
2023
Q2 		$7.29K Hold
1,716
– – ﹤0.01% 3030
2023
Q1 		$9.11K Hold
1,716
– – ﹤0.01% 2897
2022
Q4 		$10.8K Hold
1,716
– – ﹤0.01% 2841
2022
Q3 		$18K Buy
+1,716
New +$16K ﹤0.01% 2816

Other funds holding CRBU

P
Pfizer New York $239M AUM 232.47% 1-Year Est. Return
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

Russell Investments Group's CRBU Position: Q1 2026 in Review

Russell Investments Group increased its Caribou Biosciences (CRBU) stake by 13% in Q1 2026, buying an estimated $5.51K and bringing the position to 27,560 shares worth $52.4K. The position accounts for ﹤0.01% of the portfolio, ranked #3303.

Russell Investments Group first reported a position in CRBU in Q3 2022 and has held it in 12 quarters since. 137 funds tracked by Wall St. Rank hold CRBU as of Q1 2026.

  • Russell Investments Group held 27,560 shares of Caribou Biosciences worth $52.4K as of Q1 2026.
  • Russell Investments Group bought 3,213 Caribou Biosciences shares in Q1 2026, an estimated $5.51K.
  • Caribou Biosciences made up ﹤0.01% of Russell Investments Group's portfolio in Q1 2026, its #3303 holding.
  • Russell Investments Group first reported a position in Caribou Biosciences in Q3 2022 and has held it in 12 quarters since.
  • 137 funds tracked by Wall St. Rank held Caribou Biosciences as of Q1 2026.

Based on Russell Investments Group's 13F filing for Q1 2026, filed 8 May 2026.