JANX · Insider trading · 13F holders · Congress trades
Janux Therapeutics Inc (JANX)
Who is buying and selling JANX: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 8
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 0
JANX at a glance
- No open-market insider purchases or sales of JANX were filed in the last 90 days.
- 8 13F filers hold JANX among their 50 largest positions, worth $268.2M combined, including Peter Kolchinsky. The biggest bets by portfolio weight are Prosight Management, LP (10.1%), Peter Kolchinsky (1.5%) and West Tower Group, LLC (1.5%). In their latest 13Fs, 1 manager opened a new position and 1 added to one.
- No member of Congress has disclosed a trade in JANX.
JANX insider trading
No open-market insider purchases or sales of JANX were filed in the last 90 days.
Who owns JANX? Hedge funds and superinvestors
8 13F filers hold JANX among their 50 largest positions, worth $268.2M combined, including Peter Kolchinsky. The biggest bets by portfolio weight are Prosight Management, LP (10.1%), Peter Kolchinsky (1.5%) and West Tower Group, LLC (1.5%). In their latest 13Fs, 1 manager opened a new position and 1 added to one.
Superinvestors holding JANX: Peter Kolchinsky 1.5%
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Peter KolchinskyHedge fund | 1.5% | $171.9M | 11,189,693 | +0.0% shares | Q2 2026 |
| Prosight Management, LPHedge fund | 10.1% | $58.4M | 3,804,481 | +7.2% shares | Q2 2026 |
| TCG Crossover Management, LLCHedge fund | 0.7% | $27.5M | 1,789,617 | +0.0% shares | Q2 2026 |
| Nationale-Nederlanden Powszechne Towarzystwo Emerytalne S.A.Investment manager | 0.3% | $5.8M | 376,496 | +0.0% shares | Q2 2026 |
| BML Capital Management, LLCHedge fund | 1.4% | $2.4M | 154,961 | +0.0% shares | Q2 2026 |
| Rangeley Capital, LLCHedge fund | 1.4% | $1.5M | 97,978 | -20.0% shares | Q2 2026 |
| West Tower Group, LLCHedge fund | 1.5% | $397K | 23,000 | New | Q3 2026 |
| Lion Point Capital, LPHedge fund | 1.4% | $292K | 19,000 | +0.0% shares | Q2 2026 |
Each manager counts with its latest 13F (Q3 2026: 1, Q2 2026: 7). Screen JANX in the grand portfolio →
JANX stock trades by members of Congress
No member of Congress has disclosed a trade in JANX.
JANX questions and answers
Are insiders buying JANX stock?
No open-market insider purchases or sales of JANX were filed in the last 90 days.
Which hedge funds own JANX?
8 13F filers hold JANX among their 50 largest positions, worth $268.2M combined, including Peter Kolchinsky. The biggest bets by portfolio weight are Prosight Management, LP (10.1%), Peter Kolchinsky (1.5%) and West Tower Group, LLC (1.5%). In their latest 13Fs, 1 manager opened a new position and 1 added to one.
Has Congress traded JANX?
No member of Congress has disclosed a trade in JANX.
Who is the largest holder of JANX?
Among 13F filers, Peter Kolchinsky reports the largest JANX position, $171.9M (11,189,693 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Prosight Management, LP's: 10.1% of its portfolio.
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