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Polar Capital Holdings’s Korro Bio KRRO Stock Holding History

Polar Capital Holdings’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
-264,694
Closed -$12.7M – 286
2025
Q3 		$12.7M Buy
264,694
+14,694
+6% +$326K 0.06% 186
2025
Q2 		$3.12M Hold
250,000
– – 0.02% 243
2025
Q1 		$4.35M Buy
250,000
+175,000
+233% +$5.19M 0.03% 236
2024
Q4 		$2.86M Buy
+75,000
New +$3.85M 0.02% 262

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
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
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
SL
Siren LLC Greenwich, Connecticut $3.61B AUM 203.3% 1-Year Est. Return
Jane Street
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

Polar Capital Holdings's KRRO Position: Q4 2025 in Review

Polar Capital Holdings sold out of Korro Bio (KRRO) in Q4 2025, closing a stake of 264,694 shares — an estimated $12.7M sold.

Polar Capital Holdings first reported a position in KRRO in Q4 2024 and held it in 4 quarters. The position peaked at $12.7M in Q3 2025. 83 funds tracked by Wall St. Rank hold KRRO as of Q4 2025.

  • Polar Capital Holdings reported no remaining Korro Bio position as of Q4 2025 after selling out during the quarter.
  • Polar Capital Holdings sold 264,694 Korro Bio shares in Q4 2025, an estimated $12.7M.
  • Polar Capital Holdings first reported a position in Korro Bio in Q4 2024 and held it in 4 quarters.
  • Polar Capital Holdings's Korro Bio position peaked at $12.7M in Q3 2025.
  • 83 funds tracked by Wall St. Rank held Korro Bio as of Q4 2025.

Based on Polar Capital Holdings's 13F filing for Q4 2025, filed 17 Feb 2026.