Marshall Wace
KRRO icon

Marshall Wace’s Korro Bio KRRO Stock Holding History

Marshall Wace’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
2026
Q1 		$389K Buy
34,343
+14,571
+74% +$160K ﹤0.01% 2555
2025
Q4 		$158K Buy
+19,772
New +$462K ﹤0.01% 2640
2025
Q1 		– Sell
-18,461
Closed -$703K – 2885
2024
Q4 		$703K Buy
+18,461
New +$949K ﹤0.01% 1894
2024
Q3 		– Sell
-9,103
Closed -$308K – 2755
2024
Q2 		$308K Sell
9,103
-4,304
-32% -$238K ﹤0.01% 2144
2024
Q1 		$1.21M Buy
+13,407
New +$732K ﹤0.01% 1579
2023
Q2 		– Sell
-1,362
Closed -$34K – 2726
2023
Q1 		$34K Buy
+1,362
New +$155K ﹤0.01% 2560
2021
Q1 		– Sell
-313
Closed -$553K – 2685
2020
Q4 		$553K Buy
+313
New +$413K ﹤0.01% 1422
2020
Q2 		– Sell
-42
Closed -$37K – 1779
2020
Q1 		$37K Sell
42
-663
-94% -$716K ﹤0.01% 1467
2019
Q4 		$618K Buy
+705
New +$548K ﹤0.01% 1105

Other funds holding KRRO

LCM
Lynx1 Capital Management San Juan, Puerto Rico $633M AUM 173.22% 1-Year Est. Return
NMC
NEA Management Company Timonium, Maryland $1.76B AUM 223.33% 1-Year Est. Return
AVLSA
Atlas Venture Life Science Advisors Cambridge, Massachusetts $790M AUM 223.66% 1-Year Est. Return
Balyasny Asset Management
Balyasny Asset Management Chicago, Illinois $77.1B AUM 42.89% 1-Year Est. Return
VA
VR Adviser New York $2.68B AUM 422.73% 1-Year Est. Return
AAA
Affinity Asset Advisors New York $1.94B AUM 374.45% 1-Year Est. Return
NCM
Nantahala Capital Management New Canaan, Connecticut $2.72B AUM 121.58% 1-Year Est. Return
ACM
ADAR1 Capital Management Austin, Texas $1.7B AUM 340.85% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
DCM
Driehaus Capital Management Chicago, Illinois $13.6B AUM 173.98% 1-Year Est. Return

Marshall Wace's KRRO Position: Q1 2026 in Review

Marshall Wace increased its Korro Bio (KRRO) stake by 74% in Q1 2026, buying an estimated $160K and bringing the position to 34,343 shares worth $389K. The position accounts for ﹤0.01% of the portfolio, ranked #2555.

Marshall Wace first reported a position in KRRO in Q4 2019 and has held it in 9 quarters since. The position peaked at $1.21M in Q1 2024. 99 funds tracked by Wall St. Rank hold KRRO as of Q1 2026.

  • Marshall Wace held 34,343 shares of Korro Bio worth $389K as of Q1 2026.
  • Marshall Wace bought 14,571 Korro Bio shares in Q1 2026, an estimated $160K.
  • Korro Bio made up ﹤0.01% of Marshall Wace's portfolio in Q1 2026, its #2555 holding.
  • Marshall Wace first reported a position in Korro Bio in Q4 2019 and has held it in 9 quarters since.
  • Marshall Wace's Korro Bio position peaked at $1.21M in Q1 2024.
  • 99 funds tracked by Wall St. Rank held Korro Bio as of Q1 2026.

Based on Marshall Wace's 13F filing for Q1 2026, filed 15 May 2026.