Cormorant Asset Management’s Korro Bio KRRO Stock Holding History

Cormorant Asset Management’s Portfolio KRRO Stock Details KRRO Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q4	–	Sell	-465,000	Closed	-$22.3M	–	40
2025 Q3	$22.3M	Hold	465,000	–	–	1.54%	17
2025 Q2	$5.81M	Buy	465,000 +84,697	+22%	+$1.22M	0.43%	35
2025 Q1	$6.62M	Buy	+380,303	New	+$11.3M	0.5%	34
2024 Q4	–	Sell	-265,826	Closed	-$8.88M	–	50
2024 Q3	$8.88M	Hold	265,826	–	–	0.47%	36
2024 Q2	$9M	Sell	265,826 -263,344	-50%	-$14.6M	0.52%	37
2024 Q1	$47.6M	Hold	529,170	–	–	2.09%	13
2023 Q4	$25.4M	Buy	+529,170	New	+$17.4M	1.21%	25

Other funds holding KRRO

AVLSA

Atlas Venture Life Science Advisors Cambridge, Massachusetts $790M AUM 223.66% 1-Year Est. Return

NMC

NEA Management Company Timonium, Maryland $1.76B AUM 223.33% 1-Year Est. Return

LCM

Lynx1 Capital Management San Juan, Puerto Rico $633M AUM 173.22% 1-Year Est. Return

NCM

Nantahala Capital Management New Canaan, Connecticut $2.72B AUM 121.58% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

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

TCM

TCG Crossover Management Palo Alto, California $3.5B AUM 1,165.83% 1-Year Est. Return

Siren LLC Greenwich, Connecticut $3.61B AUM 203.3% 1-Year Est. Return

Jane Street New York $777B AUM 61.18% 1-Year Est. Return

7IH

72 Investment Holdings Stamford, Connecticut $49.6M AUM 684.72% 1-Year Est. Return

Cormorant Asset Management's KRRO Position: Q4 2025 in Review

Cormorant Asset Management sold out of Korro Bio (KRRO) in Q4 2025, closing a stake of 465,000 shares — an estimated $22.3M sold.

Cormorant Asset Management first reported a position in KRRO in Q4 2023 and held it in 7 quarters. The position peaked at $47.6M in Q1 2024. 83 funds tracked by Wall St. Rank hold KRRO as of Q4 2025.

Cormorant Asset Management reported no remaining Korro Bio position as of Q4 2025 after selling out during the quarter.
Cormorant Asset Management sold 465,000 Korro Bio shares in Q4 2025, an estimated $22.3M.
Cormorant Asset Management first reported a position in Korro Bio in Q4 2023 and held it in 7 quarters.
Cormorant Asset Management's Korro Bio position peaked at $47.6M in Q1 2024.
83 funds tracked by Wall St. Rank held Korro Bio as of Q4 2025.

Based on Cormorant Asset Management's 13F filing for Q4 2025, filed 17 Feb 2026.