Bruce & Co’s Caribou Biosciences CRBU Stock Holding History

Bruce & Co’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	$475K	Hold	250,000	–	–	0.14%	39
2025 Q4	$398K	Hold	250,000	–	–	0.12%	38
2025 Q3	$583K	Hold	250,000	–	–	0.18%	37
2025 Q2	$315K	Hold	250,000	–	–	0.1%	41
2025 Q1	$228K	Hold	250,000	–	–	0.07%	41
2024 Q4	$398K	Sell	250,000 -50,000	-17%	-$101K	0.13%	38
2024 Q3	$588K	Hold	300,000	–	–	0.17%	37
2024 Q2	$492K	Buy	300,000 +100,000	+50%	+$320K	0.16%	36
2024 Q1	$1.03M	Hold	200,000	–	–	0.34%	31
2023 Q4	$1.15M	Hold	200,000	–	–	0.4%	28
2023 Q3	$956K	Hold	200,000	–	–	0.33%	29
2023 Q2	$850K	Buy	200,000 +100,000	+100%	+$449K	0.24%	29
2023 Q1	$531K	Buy	+100,000	New	+$623K	0.14%	34

Other funds holding CRBU

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

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

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 New York $5.72T AUM 30.48% 1-Year Est. Return

Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

Aberdeen Group Edinburgh, United Kingdom $61.9B AUM 29.81% 1-Year Est. Return

Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Bruce & Co's CRBU Position: Q1 2026 in Review

Bruce & Co held its Caribou Biosciences (CRBU) position steady in Q1 2026 at 250,000 shares worth $475K. The position accounts for 0.14% of the portfolio, ranked #39.

Bruce & Co first reported a position in CRBU in Q1 2023 and has held it in 13 quarters since. The position peaked at $1.15M in Q4 2023. 137 funds tracked by Wall St. Rank hold CRBU as of Q1 2026.

Bruce & Co held 250,000 shares of Caribou Biosciences worth $475K as of Q1 2026.
Bruce & Co left its Caribou Biosciences share count unchanged in Q1 2026.
Caribou Biosciences made up 0.14% of Bruce & Co's portfolio in Q1 2026, its #39 holding.
Bruce & Co first reported a position in Caribou Biosciences in Q1 2023 and has held it in 13 quarters since.
Bruce & Co's Caribou Biosciences position peaked at $1.15M in Q4 2023.
137 funds tracked by Wall St. Rank held Caribou Biosciences as of Q1 2026.

Based on Bruce & Co's 13F filing for Q1 2026, filed 14 May 2026.