Ken Griffin
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Ken Griffin’s Janux Therapeutics JANX Stock Holding History

Ken Griffin’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 		$4.9M Sell
352,177
-751,967
-68% -$10.3M ﹤0.01% 4370
2025
Q4 		$15.2M Buy
1,104,144
+301,360
+38% +$7.09M ﹤0.01% 2686
2025
Q3 		$19.6M Sell
802,784
-428,342
-35% -$10.4M ﹤0.01% 2369
2025
Q2 		$28.4M Buy
1,231,126
+524,462
+74% +$13.8M ﹤0.01% 1743
2025
Q1 		$19.1M Sell
706,664
-654,214
-48% -$24.7M ﹤0.01% 2093
2024
Q4 		$72.9M Buy
1,360,878
+351,110
+35% +$18.6M 0.01% 964
2024
Q3 		$45.9M Sell
1,009,768
-547,348
-35% -$23.8M 0.01% 1296
2024
Q2 		$65.2M Sell
1,557,116
-793,122
-34% -$37.2M 0.01% 947
2024
Q1 		$88.5M Sell
2,350,238
-769,967
-25% -$16.8M 0.02% 784
2023
Q4 		$33.5M Sell
3,120,205
-311,004
-9% -$2.69M 0.01% 1516
2023
Q3 		$34.6M Buy
3,431,209
+1,315,635
+62% +$15.2M 0.01% 1387
2023
Q2 		$25.1M Buy
2,115,574
+262,548
+14% +$3.51M 0.01% 1656
2023
Q1 		$22.4M Sell
1,853,026
-1,785
-0.1% -$29.7K ﹤0.01% 1808
2022
Q4 		$24.4M Buy
1,854,811
+1,595
+0.1% +$23.3K 0.01% 1751
2022
Q3 		$25.1M Sell
1,853,216
-216
-0% -$2.89K 0.01% 1652
2022
Q2 		$22.6M Hold
1,853,432
– – 0.01% 1720
2022
Q1 		$26.6M Hold
1,853,432
– – 0.01% 1679
2021
Q4 		$36.6M Sell
1,853,432
-5,814
-0.3% -$122K 0.01% 1434
2021
Q3 		$39.6M Sell
1,859,246
-27,466
-1% -$790K 0.01% 1311
2021
Q2 		$46.2M Buy
+1,886,712
New +$42M 0.01% 1192

Other funds holding JANX

RCM
RA Capital Management Boston, Massachusetts $9.44B AUM 157.3% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return
PM
Prosight Management Dallas, Texas $610M AUM 40.86% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
TCM
TCG Crossover Management Palo Alto, California $3.5B AUM 1,165.83% 1-Year Est. Return
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $35.4B AUM 33.54% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

Ken Griffin's JANX Position: Q1 2026 in Review

Ken Griffin reduced its Janux Therapeutics (JANX) stake by 68% in Q1 2026, selling an estimated $10.3M and leaving 352,177 shares worth $4.9M. The position accounts for ﹤0.01% of the portfolio, ranked #4370.

Ken Griffin first reported a position in JANX in Q2 2021 and has held it in 20 quarters since. The position peaked at $88.5M in Q1 2024. 190 funds tracked by Wall St. Rank hold JANX as of Q1 2026.

  • Ken Griffin held 352,177 shares of Janux Therapeutics worth $4.9M as of Q1 2026.
  • Ken Griffin sold 751,967 Janux Therapeutics shares in Q1 2026, an estimated $10.3M.
  • Janux Therapeutics made up ﹤0.01% of Ken Griffin's portfolio in Q1 2026, its #4370 holding.
  • Ken Griffin first reported a position in Janux Therapeutics in Q2 2021 and has held it in 20 quarters since.
  • Ken Griffin's Janux Therapeutics position peaked at $88.5M in Q1 2024.
  • 190 funds tracked by Wall St. Rank held Janux Therapeutics as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.