JANX Institutional Ownership & Shareholders
JANUX THERAPEUTICS INC (JANX) is currently held by 192 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $988.78M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Ra Capital Management, L.P. is currently the largest disclosed institutional shareholder of JANX tracked by InsiderSet, reporting ownership valued at approximately $171.87M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $195.48M, representing an estimated gain of +13.74% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 60% of the total disclosed JANX value among the investors covered in this analysis. Major shareholders include Ra Capital Management, L.P., Blackrock, Inc., Prosight Management, Lp, and several other long-term asset managers with concentrated positions in JANUX THERAPEUTICS INC (JANX).
This page ranks the largest institutional JANX shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
192
Total Reported Value
$988.78M
Largest Holder
Ra Capital Management, L.P.
Largest Position
$171.87M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
73
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Ra Capital Management, L.P. | 1.49% | 11,189,693 | $171,873,684 | $195,483,937 | +$23,610,253 | +13.74% | |
| Blackrock, Inc. | 0.00% | 6,134,667 | $94,228,481 | $107,172,632 | +$12,944,151 | +13.74% | |
| Prosight Management, Lp | 10.07% | 3,804,481 | $58,436,828 | $66,464,283 | +$8,027,455 | +13.74% | |
| Janus Henderson Group Plc | 0.03% | 4,196,409 | $58,279,971 | $73,311,265 | +$15,031,294 | +25.79% | |
| State Street Corp | 0.00% | 3,004,899 | $46,155,249 | $52,495,586 | +$6,340,337 | +13.74% | |
| Fmr Llc | 0.00% | 2,412,825 | $37,060,986 | $42,152,053 | +$5,091,067 | +13.74% | |
| Federated Hermes, Inc. | 0.05% | 2,352,927 | $36,140,959 | $41,105,635 | +$4,964,676 | +13.74% | |
| Point72 Asset Management, L.P. | 0.05% | 1,993,837 | $30,625,336 | $34,832,332 | +$4,206,996 | +13.74% | |
| Vanguard Capital Management Llc | 0.00% | 1,857,351 | $28,528,911 | $32,447,922 | +$3,919,011 | +13.74% | |
| Tcg Crossover Management, Llc | 0.66% | 1,789,617 | $27,488,517 | $31,264,609 | +$3,776,092 | +13.74% | |
| Alyeska Investment Group, L.P. | 0.07% | 1,647,140 | $25,300,070 | $28,775,536 | +$3,475,466 | +13.74% | |
| Wellington Management Group Llp | 0.00% | 1,507,360 | $23,153,049 | $26,333,579 | +$3,180,530 | +13.74% | |
| Vanguard Portfolio Management Llc | 0.00% | 1,330,710 | $20,439,706 | $23,247,504 | +$2,807,798 | +13.74% | |
| Two Sigma Investments, Lp | 0.01% | 1,207,250 | $18,543,360 | $21,090,658 | +$2,547,298 | +13.74% | |
| Geode Capital Management, Llc | 0.00% | 1,204,150 | $18,499,798 | $21,036,501 | +$2,536,703 | +13.71% | |
| Citadel Advisors Llc | 0.01% | 1,200,737 | $18,443,321 | $20,976,875 | +$2,533,554 | +13.74% | |
| Algert Global Llc | 0.20% | 1,110,889 | $17,063,255 | $19,407,231 | +$2,343,976 | +13.74% | |
| D. E. Shaw & Co., Inc. | 0.01% | 1,096,509 | $16,842,378 | $19,156,012 | +$2,313,634 | +13.74% | |
| Goldman Sachs Group Inc | 0.00% | 952,675 | $14,633,088 | $16,643,232 | +$2,010,144 | +13.74% | |
| Bank Of America Corp | 0.00% | 910,460 | $13,984,665 | $15,905,736 | +$1,921,071 | +13.74% | |
| Morgan Stanley | 0.00% | 836,966 | $12,855,801 | $14,621,796 | +$1,765,995 | +13.74% | |
| Nantahala Capital Management, Llc | 0.75% | 809,914 | $12,440,279 | $14,149,198 | +$1,708,919 | +13.74% | |
| Qube Research & Technologies Ltd | 0.01% | 702,057 | $10,783,596 | $12,264,936 | +$1,481,340 | +13.74% | |
| Squarepoint Ops Llc | 0.02% | 532,321 | $8,176,451 | $9,299,648 | +$1,123,197 | +13.74% | |
| Orbimed Advisors Llc | 0.15% | 524,700 | $8,059,392 | $9,166,509 | +$1,107,117 | +13.74% | |
| Millennium Management Llc | 0.01% | 504,544 | $7,749,796 | $8,814,384 | +$1,064,588 | +13.74% | |
| Hrt Financial Lp | 0.01% | 491,001 | $7,541,000 | $8,577,787 | +$1,036,787 | +13.75% | |
| Adar1 Capital Management, Llc | 0.30% | 420,881 | $6,464,732 | $7,352,791 | +$888,059 | +13.74% | |
| Northern Trust Corp | 0.00% | 398,366 | $6,118,902 | $6,959,454 | +$840,552 | +13.74% | |
| Jane Street Group, Llc | 0.00% | 391,991 | $6,020,981 | $6,848,083 | +$827,102 | +13.74% | |
| Nationale-Nederlanden Powszechne Towarzystwo Emerytalne S.A. | 0.32% | 376,496 | $5,782,979 | $6,577,385 | +$794,406 | +13.74% | |
| Woodline Partners Lp | 0.02% | 370,032 | $5,683,692 | $6,464,459 | +$780,767 | +13.74% | |
| Charles Schwab Investment Management Inc | 0.00% | 369,191 | $5,670,774 | $6,449,767 | +$778,993 | +13.74% | |
| Rock Springs Capital Management Lp | 0.28% | 367,009 | $5,637,258 | $6,411,647 | +$774,389 | +13.74% | |
| Jump Financial, Llc | 0.05% | 361,665 | $5,555,174 | $6,318,288 | +$763,114 | +13.74% | |
| Dimensional Fund Advisors Lp | 0.00% | 359,725 | $5,525,376 | $6,284,396 | +$759,020 | +13.74% | |
| Vanguard Fiduciary Trust Co | 0.00% | 315,271 | $4,842,563 | $5,507,784 | +$665,221 | +13.74% | |
| Panagora Asset Management Inc | 0.01% | 269,113 | $4,133,576 | $4,701,404 | +$567,828 | +13.74% | |
| Man Group Plc | 0.01% | 248,801 | $3,821,583 | $4,346,553 | +$524,970 | +13.74% | |
| Balyasny Asset Management L.P. | 0.01% | 211,635 | $3,250,714 | $3,697,263 | +$446,549 | +13.74% | |
| Bnp Paribas Financial Markets | 0.00% | 209,593 | $3,219,348 | $3,661,590 | +$442,242 | +13.74% | |
| Creative Planning | 0.00% | 168,202 | $2,906,524 | $2,938,489 | +$31,965 | +1.10% | |
| Jpmorgan Chase & Co | 0.00% | 178,535 | $2,736,049 | $3,119,006 | +$382,957 | +14.00% | |
| Allspring Global Investments Holdings, Llc | 0.00% | 166,092 | $2,434,909 | $2,901,627 | +$466,718 | +19.17% | |
| Bml Capital Management, Llc | 1.36% | 154,961 | $2,380,201 | $2,707,169 | +$326,968 | +13.74% | |
| Ubs Group Ag | 0.00% | 150,701 | $2,314,767 | $2,632,746 | +$317,979 | +13.74% | |
| Bank Of New York Mellon Corp | 0.00% | 135,072 | $2,074,706 | $2,359,708 | +$285,002 | +13.74% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | 133,870 | $2,056,243 | $2,338,709 | +$282,466 | +13.74% | |
| Thrivent Financial For Lutherans | 0.00% | 115,030 | $1,766,000 | $2,009,574 | +$243,574 | +13.79% | |
| Aqr Capital Management Llc | 0.00% | 108,077 | $1,660,063 | $1,888,105 | +$228,042 | +13.74% |
Frequently asked questions about JANX
Who are the largest institutional holders of JANX?
The largest institutional holders of JANX reported in the latest SEC Form 13F filings include Ra Capital Management, L.P., Blackrock, Inc., Prosight Management, Lp, Janus Henderson Group Plc, and State Street Corp. InsiderSet ranks institutional holders by their latest reported JANX position.
What is JANX institutional ownership?
This page tracks JANX positions reported by institutional investment managers through SEC Form 13F. JANUX THERAPEUTICS INC (JANX) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own JANX?
InsiderSet currently tracks 192 institutional managers reporting JANX holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of JANX shareholders.
How much JANX stock do institutions own?
Institutional investment managers disclosed approximately $988.78M in JANX holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was JANX institutional ownership last updated?
The latest JANX institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional JANX holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its JANX position after the reporting date.
Are institutions buying or selling JANX?
Institutional buying and selling can be analyzed by comparing JANX positions across consecutive 13F reporting periods. InsiderSet's JANX Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View JANX ownership changes.
How has JANX institutional ownership changed over time?
InsiderSet tracks JANX institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.