Vanguard Group
KRRO icon

Vanguard Group’s Korro Bio KRRO Stock Holding History

Vanguard Group’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 		$3.92M Buy
489,639
+93,980
+24% +$2.2M ﹤0.01% 3348
2025
Q3 		$18.9M Buy
395,659
+8,921
+2% +$198K ﹤0.01% 2650
2025
Q2 		$4.83M Buy
386,738
+4,939
+1% +$71.1K ﹤0.01% 3231
2025
Q1 		$6.65M Sell
381,799
-7,691
-2% -$228K ﹤0.01% 3064
2024
Q4 		$14.8M Sell
389,490
-47,371
-11% -$2.43M ﹤0.01% 2744
2024
Q3 		$14.6M Sell
436,861
-31,442
-7% -$1.32M ﹤0.01% 2761
2024
Q2 		$15.9M Buy
468,303
+201,636
+76% +$11.1M ﹤0.01% 2680
2024
Q1 		$24M Sell
266,667
-4,307
-2% -$235K ﹤0.01% 2511
2023
Q4 		$13M Buy
270,974
+236,884
+695% +$7.81M ﹤0.01% 2802
2023
Q3 		$631K Sell
34,090
-461
-1% -$11.6K ﹤0.01% 3987
2023
Q2 		$598K Hold
34,551
– – ﹤0.01% 4075
2023
Q1 		$869K Buy
34,551
+88
+0.3% +$10K ﹤0.01% 3961
2022
Q4 		$6.63M Sell
34,463
-1,027
-3% -$106K ﹤0.01% 3157
2022
Q3 		$3.18M Hold
35,490
– – ﹤0.01% 3554
2022
Q2 		$2.66M Buy
35,490
+10,565
+42% +$714K ﹤0.01% 3682
2022
Q1 		$2.64M Sell
24,925
-4,219
-14% -$806K ﹤0.01% 3841
2021
Q4 		$7.47M Buy
29,144
+393
+1% +$119K ﹤0.01% 3392
2021
Q3 		$10.1M Buy
28,751
+180
+0.6% +$70.8K ﹤0.01% 3236
2021
Q2 		$14.2M Sell
28,571
-1,917
-6% -$936K ﹤0.01% 3023
2021
Q1 		$14.5M Buy
30,488
+725
+2% +$1.41M ﹤0.01% 2952
2020
Q4 		$52.5M Buy
29,763
+868
+3% +$1.15M ﹤0.01% 2174
2020
Q3 		$27.8M Buy
28,895
+7,632
+36% +$8.19M ﹤0.01% 2300
2020
Q2 		$24.7M Buy
21,263
+17,029
+402% +$15.4M ﹤0.01% 2317
2020
Q1 		$3.77M Sell
4,234
-182
-4% -$196K ﹤0.01% 3091
2019
Q4 		$3.87M Buy
+4,416
New +$3.43M ﹤0.01% 3253

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
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
Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return

Vanguard Group's KRRO Position: Q4 2025 in Review

Vanguard Group increased its Korro Bio (KRRO) stake by 24% in Q4 2025, buying an estimated $2.2M and bringing the position to 489,639 shares worth $3.92M. The position accounts for ﹤0.01% of the portfolio, ranked #3348.

Vanguard Group first reported a position in KRRO in Q4 2019 and has held it in 25 quarters since. The position peaked at $52.5M in Q4 2020. 83 funds tracked by Wall St. Rank hold KRRO as of Q4 2025.

  • Vanguard Group held 489,639 shares of Korro Bio worth $3.92M as of Q4 2025.
  • Vanguard Group bought 93,980 Korro Bio shares in Q4 2025, an estimated $2.2M.
  • Korro Bio made up ﹤0.01% of Vanguard Group's portfolio in Q4 2025, its #3348 holding.
  • Vanguard Group first reported a position in Korro Bio in Q4 2019 and has held it in 25 quarters since.
  • Vanguard Group's Korro Bio position peaked at $52.5M in Q4 2020.
  • 83 funds tracked by Wall St. Rank held Korro Bio as of Q4 2025.

Based on Vanguard Group's 13F filing for Q4 2025, filed 29 Jan 2026.