Jane Street
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Jane Street’s Janux Therapeutics JANX Stock Holding History

Jane Street’s Portfolio JANX Stock Details JANX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-24,300
Closed -$335K – 12286
2025
Q4 		$335K Buy
24,300
+12,400
+104% +$292K ﹤0.01% 8582
2025
Q3 		$291K Buy
+11,900
New +$290K ﹤0.01% 8963
2025
Q1 		– Sell
-4,100
Closed -$220K – 10023
2024
Q4 		$220K Sell
4,100
-5,500
-57% -$291K ﹤0.01% 8262
2024
Q3 		$436K Buy
+9,600
New +$418K ﹤0.01% 7431

Other funds holding JANX

RCM
RA Capital Management Boston, Massachusetts $11.5B AUM 168.77% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
PM
Prosight Management Dallas, Texas $580M AUM 29.81% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Federated Hermes
Federated Hermes Pittsburgh, Pennsylvania $69.6B AUM 42.52% 1-Year Est. Return
Point72 Asset Management
Point72 Asset Management Stamford, Connecticut $90.7B AUM 77.13% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
TCM
TCG Crossover Management Palo Alto, California $4.16B AUM 983.43% 1-Year Est. Return
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $38.9B AUM 28.51% 1-Year Est. Return

Jane Street's JANX Position: Q2 2026 in Review

Jane Street increased its Janux Therapeutics (JANX) stake by 56% in Q2 2026, buying an estimated $2.03M and bringing the position to 391,991 shares worth $6.02M. The position accounts for ﹤0.01% of the portfolio, ranked #3448.

Jane Street first reported a position in JANX in Q4 2021 and has held it in 11 quarters since. The position peaked at $7.46M in Q4 2025. 197 funds tracked by Wall St. Rank hold JANX as of Q2 2026.

  • Jane Street held 391,991 shares of Janux Therapeutics worth $6.02M as of Q2 2026.
  • Jane Street bought 140,251 Janux Therapeutics shares in Q2 2026, an estimated $2.03M.
  • Janux Therapeutics made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #3448 holding.
  • Jane Street first reported a position in Janux Therapeutics in Q4 2021 and has held it in 11 quarters since.
  • Jane Street's Janux Therapeutics position peaked at $7.46M in Q4 2025.
  • 197 funds tracked by Wall St. Rank held Janux Therapeutics as of Q2 2026.

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