Simplex Trading
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Simplex Trading’s Korro Bio KRRO Stock Holding History

Simplex Trading’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 		$13.6K Sell
1,200
-76,900
-98% -$847K ﹤0.01% 7079
2025
Q4 		$626K Buy
+78,100
New +$1.83M ﹤0.01% 3078
2022
Q1 		– Sell
-100
Closed -$25K – 10936
2021
Q4 		$25K Buy
100
+86
+614% +$26.1K ﹤0.01% 8112
2021
Q3 		$6K Sell
14
-6
-30% -$2.36K ﹤0.01% 9202
2021
Q2 		$9K Sell
20
-2
-9% -$977 ﹤0.01% 9159
2021
Q1 		$1.04M Buy
22
+20
+1,000% +$38.9K ﹤0.01% 2347
2020
Q4 		$363K Buy
+2
New +$2.64K ﹤0.01% 3834

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

Simplex Trading's KRRO Position: Q1 2026 in Review

Simplex Trading sold out of Korro Bio (KRRO) in Q1 2026, closing a stake of 28,247 shares — an estimated $311K sold.

Simplex Trading first reported a position in KRRO in Q1 2021 and held it in 6 quarters. The position peaked at $419K in Q1 2021. 99 funds tracked by Wall St. Rank hold KRRO as of Q1 2026.

  • Simplex Trading reported no remaining Korro Bio position as of Q1 2026 after selling out during the quarter.
  • Simplex Trading sold 28,247 Korro Bio shares in Q1 2026, an estimated $311K.
  • Simplex Trading first reported a position in Korro Bio in Q1 2021 and held it in 6 quarters.
  • Simplex Trading's Korro Bio position peaked at $419K in Q1 2021.
  • 99 funds tracked by Wall St. Rank held Korro Bio as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.