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JANX in the 13F filings

Janux Therapeutics Inc · CUSIP 47103J105

Sector · Pharmaceuticals and biotechnologyTheme · Healthcare: biopharma and medtech· L3VLUP-definedTheme · Pharmaceutical preparations
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q3 2023Q2 2023
Quarter end
31 Dec 2025
the date the book describes
Filed
19 Feb 2026
latest of these filings; the earliest 10 Feb 2026
Managers listing it
27
at least, of 95 tracked, among listed positions
Comparable managers
92
filed both Q3 2025 and Q4 2025; 3 listed it in both
Shares listed
18,011,581
combined, among listed positions
Reported value
$249m
combined, at the quarter end

Among the 92 comparable managers: 21 buyers (opened or added shares) and 6 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -2,058,587.

Managers listing JANX in Q4 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q3 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

27 of 27 holders

ActionFiling
Janus Henderson Group Ltd5,350,453$74munder 0.1%Added+649,34117 Feb 2026 (the filing on sec.gov)
Fidelity (FMR LLC)3,512,384$48munder 0.1%Trimmed-5,543,67817 Feb 2026 (the filing on sec.gov)
Wellington Management Group LLP1,610,186$22munder 0.1%Added+908,58217 Feb 2026 (the filing on sec.gov)
Citadel Advisors LLC1,104,144$15munder 0.1%Added+301,36017 Feb 2026 (the filing on sec.gov)
Woodline Partners LP1,027,221$14m0.05%Added+28317 Feb 2026 (the filing on sec.gov)
Point72 Asset Management LP961,819$13munder 0.1%Trimmed-748,38117 Feb 2026 (the filing on sec.gov)
Balyasny Asset Management LLC885,551$12munder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc744,466$10munder 0.1%Trimmed-521,09017 Feb 2026 (the filing on sec.gov)
Jane Street Group LLC540,233$7.5munder 0.1%Added+458,91112 Feb 2026 (the filing on sec.gov)
Two Sigma Investments LP471,009$6.5munder 0.1%Added+367,53317 Feb 2026 (the filing on sec.gov)
Squarepoint Ops LLC390,952$5.4munder 0.1%Added+324,79113 Feb 2026 (the filing on sec.gov)
Walleye Capital LLC323,017$4.5munder 0.1%Added+287,19613 Feb 2026 (the filing on sec.gov)
Millennium Management LLC289,808$4.0munder 0.1%Added+189,16317 Feb 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP161,548$2.2munder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
Hudson Bay Capital Management LP110,000$1.5munder 0.1%Added+60,00013 Feb 2026 (the filing on sec.gov)
Two Sigma Advisers LP104,100$1.4munder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
Tudor Investment Corp79,158$1.1munder 0.1%Trimmed-19,39817 Feb 2026 (the filing on sec.gov)
Man Group PLC64,512$890kunder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC45,453$627kunder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
Freestone Grove Partners LP41,806$577kunder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
AllianceBernstein LP35,590$491kunder 0.1%Held017 Feb 2026 (the filing on sec.gov)
Susquehanna International Group LLP35,237$486kunder 0.1%Trimmed-133,90417 Feb 2026 (the filing on sec.gov)
D. E. Shaw & Co.32,707$451kunder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
Winton Group Ltd31,800$439kunder 0.1%Newnew11 Feb 2026 (the filing on sec.gov)
Invesco Ltd28,322$391kunder 0.1%Added+3,85319 Feb 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q3 2025 to Q4 2025, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (10)

Exited (1)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
5 in Q3 2024 to 1 in Q2 2026

Tracked managers listing it, at least.

0246820222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
JANX by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20211$8.3mn.a.n.a.
Q3 20211$6.5mn.a.n.a.
Q4 20211$5.5mn.a.n.a.
Q1 20221$4.0mn.a.n.a.
Q2 20221$3.5mn.a.n.a.
Q3 20221$5.4mn.a.n.a.
Q4 20221$6.7mn.a.n.a.
Q1 20231$1.7mn.a.n.a.
Q2 20231$1.6mn.a.n.a.
Q3 20231$864kn.a.n.a.
Q1 20243$76m30
Q2 20243$98m22
Q3 20245$218m41
Q4 20248$850m61
Q1 20253$174m12
Q2 20254$182m12
Q3 20253$182m13
Q4 20252$88m216
Q1 20261$58m1014
Q2 20261$1.4m1413

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

JANX and LLY →JANX and JNJ →JANX and VRTX →Choose a stock to compare with JANX →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own JANX, latest filings →Back to the 13F Explorer →