Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in JANX held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | RA CAPITAL MANAGEMENT, L.P. | 11.2M | $155.5M | 0.0% | 18.349% | 1.65% |
| 2 | BlackRock, Inc. | 5.4M | $75.5M | +33.2% | 8.909% | 0.00% |
| 3 | JANUS HENDERSON GROUP PLC | 4.2M | $58.3M | -21.6% | 6.881% | 0.03% |
| 4 | Prosight Management, LP | 3.5M | $49.3M | +48.4% | 5.821% | 8.09% |
| 5 | FMR LLC | 2.5M | $35.2M | -27.8% | 4.158% | 0.00% |
| 6 | STATE STREET CORP | 2.5M | $34.2M | -36.1% | 4.040% | 0.00% |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 1.8M | $25.2M | β | 2.970% | 0.00% |
| 8 | TCG Crossover Management, LLC | 1.8M | $24.9M | 0.0% | 2.935% | 0.71% |
| 9 | Alyeska Investment Group, L.P. | 1.6M | $22.3M | +23.1% | 2.625% | 0.06% |
| 10 | WELLINGTON MANAGEMENT GROUP LLP | 1.6M | $22.2M | -0.8% | 2.620% | 0.00% |
| 11 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.3M | $17.9M | β | 2.116% | 0.00% |
| 12 | Deep Track Capital, LP | 1.2M | $16.5M | +1225.3% | 1.947% | 0.34% |
| 13 | Point72 Asset Management, L.P. | 1.2M | $16.1M | +20.2% | 1.896% | 0.02% |
| 14 | GEODE CAPITAL MANAGEMENT, LLC | 1.1M | $15.9M | +3.0% | 1.880% | 0.00% |
| 15 | BALYASNY ASSET MANAGEMENT LLC | 1.1M | $15.2M | +23.1% | 1.788% | 0.05% |
| 16 | Logos Global Management LP | 1.0M | $13.9M | 0.0% | 1.640% | 0.69% |
| 17 | ORBIMED ADVISORS LLC | 984K | $13.7M | -49.7% | 1.613% | 0.29% |
| 18 | Nantahala Capital Management, LLC | 810K | $11.3M | β | 1.328% | 0.58% |
| 19 | BANK OF AMERICA CORP /DE/ | 802K | $11.1M | +8.6% | 1.315% | 0.00% |
| 20 | Irenic Capital Management LP | 766K | $10.6M | β | 1.256% | 1.06% |
| 21 | Woodline Partners LP | 738K | $10.3M | -28.1% | 1.210% | 0.04% |
| 22 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 727K | $10.1M | +32.7% | 1.193% | 0.00% |
| 23 | MORGAN STANLEY | 704K | $9.8M | +13.8% | 1.154% | 0.00% |
| 24 | Squarepoint Ops LLC | 604K | $8.4M | +54.5% | 0.990% | 0.01% |
| 25 | GOLDMAN SACHS GROUP INC | 602K | $8.4M | -43.9% | 0.987% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in JANX β a direct measure of their conviction.
Filings activity in JANX during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new JANX position in Q1 2026
Institutions that fully closed their JANX position in Q1 2026
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 185 | +6.3% | 98.57% | 3.43 pp | $815M | 3.4% |
| Q4 2025 | 174 | +4.2% | 102.00% | 85.17 pp | $843M | 46% |
| Q3 2025 | 167 | 2.3% | 187.17% | +13.47 pp | $1.55B | +7.8% |
| Q2 2025 | 171 | 6.6% | 173.70% | 26.29 pp | $1.44B | 17% |
| Q1 2025 | 183 | 14% | 199.99% | +0.00 pp | $1.74B | 46% |
| Q4 2024 | 212 | +34% | 199.99% | +0.00 pp | $3.24B | +63% |
| Q3 2024 | 158 | +4.6% | 199.99% | +0.00 pp | $1.98B | +12% |
| Q2 2024 | 151 | β | 199.99% | β | $1.76B | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying JANX stock.
Based on Q1 2026 13F filings, institutional ownership of Janux Therapeutics, Inc. stands at 98.6%, held across 185 reporting institutions.
RA CAPITAL MANAGEMENT, L.P. is the largest reported institutional holder of JANX, with approximately 11,189,693 shares worth $0.16B as of Q1 2026.
Yes β 2 widely-followed marquee investors appear among the top 25 institutional holders of JANX, including Point72 Asset Management, L.P., SUSQUEHANNA INTERNATIONAL GROUP, LLP.
Our composite Smart Money Score for JANX is 47 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
46 institutions opened new positions in JANX during Q1 2026, while 35 fully exited. 81 added to existing positions and 52 trimmed.
JANX institutional ownership fell by 3.43 percentage points quarter-over-quarter, with a net change of +11 holders.
The top 10 institutions account for 61.7% of all reported 13F value in JANX, and the top 25 account for 84.9%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Janux Therapeutics, Inc. (JANX) Institutional Ownership