Jane Street
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Jane Street’s Keros Therapeutics KROS Stock Holding History

Jane Street’s Portfolio KROS Stock Details KROS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$1.23M Buy
115,267
+70,810
+159% +$789K ﹤0.01% 6098
2026
Q1 		$491K Sell
44,457
-117,552
-73% -$1.82M ﹤0.01% 8083
2025
Q4 		$3.3M Sell
162,009
-446
-0.3% -$7.83K ﹤0.01% 3894
2025
Q3 		$2.57M Buy
162,455
+105,174
+184% +$1.55M ﹤0.01% 4472
2025
Q2 		$765K Buy
57,281
+10,336
+22% +$140K ﹤0.01% 6105
2025
Q1 		$478K Sell
46,945
-54,167
-54% -$629K ﹤0.01% 6941
2024
Q4 		$1.6M Buy
101,112
+40,934
+68% +$2.13M ﹤0.01% 4516
2024
Q3 		$3.49M Buy
60,178
+15,281
+34% +$755K ﹤0.01% 3456
2024
Q2 		$2.05M Buy
44,897
+25,518
+132% +$1.37M ﹤0.01% 4426
2024
Q1 		$1.28M Sell
19,379
-38
-0.2% -$2.25K ﹤0.01% 4947
2023
Q4 		$772K Buy
19,417
+8,811
+83% +$276K ﹤0.01% 6035
2023
Q3 		$338K Sell
10,606
-1,960
-16% -$73.2K ﹤0.01% 6890
2023
Q2 		$505K Sell
12,566
-6,476
-34% -$284K ﹤0.01% 6309
2023
Q1 		$813K Buy
+19,042
New +$962K ﹤0.01% 5411
2022
Q3 		– Sell
-33,356
Closed -$921K – 10098
2022
Q2 		$921K Buy
+33,356
New +$1.46M ﹤0.01% 5638
2020
Q3 		– Sell
-10,397
Closed -$390K – 7564
2020
Q2 		$390K Buy
+10,397
New +$320K ﹤0.01% 5445

Other funds holding KROS

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
NCM
Nantahala Capital Management New Canaan, Connecticut $3.01B AUM 119.46% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
O
OrbiMed New York $5.4B AUM 163.13% 1-Year Est. Return
Federated Hermes
Federated Hermes Pittsburgh, Pennsylvania $69.6B AUM 42.52% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Mackenzie Financial
Mackenzie Financial Toronto Ontario, Ontario, Canada $100B AUM 36.93% 1-Year Est. Return
MAP
Madison Avenue Partners New York $2.32B AUM 132.6% 1-Year Est. Return
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT) London, United Kingdom $108B AUM 37.29% 1-Year Est. Return

Jane Street's KROS Position: Q2 2026 in Review

Jane Street increased its Keros Therapeutics (KROS) stake by 159% in Q2 2026, buying an estimated $789K and bringing the position to 115,267 shares worth $1.23M. The position accounts for ﹤0.01% of the portfolio, ranked #6098.

Jane Street first reported a position in KROS in Q2 2020 and has held it in 16 quarters since. The position peaked at $3.49M in Q3 2024. 132 funds tracked by Wall St. Rank hold KROS as of Q2 2026.

  • Jane Street held 115,267 shares of Keros Therapeutics worth $1.23M as of Q2 2026.
  • Jane Street bought 70,810 Keros Therapeutics shares in Q2 2026, an estimated $789K.
  • Keros Therapeutics made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #6098 holding.
  • Jane Street first reported a position in Keros Therapeutics in Q2 2020 and has held it in 16 quarters since.
  • Jane Street's Keros Therapeutics position peaked at $3.49M in Q3 2024.
  • 132 funds tracked by Wall St. Rank held Keros Therapeutics as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.