Security key
47103J105
Janux Therapeutics, Inc. - Common Stock (JANX)
CUSIP: 47103J105
Q1 2026 13F Holders as of 31 Mar 2026
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 59,586,416
- Total 13F value
- $827,823,488
- Share change
- -3,279,463
- Put/Call ratio
- 92%
- SEC-reported price per share
- $13.90
- Number of holders
- 188
- Value change
- -$45,198,829
- Number of buys
- 104
- Number of sells
- 81
- Shares outstanding
- 61,171,000
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2026
Institutions
188
Top holders
10
JANX full security history
Ownership snapshot
Full 13F holder table
Janux Therapeutics, Inc. SEC filings
Janux Therapeutics, Inc. company facts
Broader feeds
Ownership snapshot
Top reported holders of JANX - Janux Therapeutics, Inc. - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
RA CAPITAL MANAGEMENT, L.P.
Disclosed value leader
RA CAPITAL MANAGEMENT, L.P.
Comparable rows
15/15
Latest evidence
03 Feb 2026
13D/G
13F
3/4/5
Lead comparable stake: 20%
13D/G row: RA CAPITAL MANAGEMENT, L.P.
Showing 1-6 of 15 holder rows.
Quick read
RA CAPITAL MANAGEMENT, L.P. leads the comparable SEC ownership view at 20%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens RA CAPITAL MANAGEMENT, L.P.'s linked filing trail.
Comparable ownership
Top 5
RA CAPITAL MANAGEMENT, L.P.
20%
Janus Henderson Group Ltd.
6.9%
Prosight Management, LP
5.3%
Paradigm Biocapital Advisors LP
4.9%
Adage Capital Management, L.P.
4.3%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. |
13D/G
13F
Company
|
20%
|
$383,922,060
11,971,377 shares
|
$0 | 06 Mar 2025 |
| Janus Henderson Group Ltd. |
13F
13D/G
Company · JANUS HENDERSON GROUP PLC
|
6.9%
from 13D/G
|
$73,850,341
5,350,453 shares
|
— | 31 Dec 2025 |
| Prosight Management, LP |
13D/G
13F
W. Lawrence Hawkins · Company
|
5.3%
|
$43,569,636
3,157,220 shares
|
$0 | 03 Feb 2026 |
| Paradigm Biocapital Advisors LP |
13D/G
|
4.9%
|
$73,444,489
2,920,258 shares
|
-$14,982,559 | 30 Jun 2025 |
| Adage Capital Management, L.P. |
13D/G
|
4.3%
|
$63,503,750
2,525,000 shares
|
-$13,499,262 | 30 Jun 2025 |
| FMR LLC |
13F
13D/G
Company
|
4.2%
from 13D/G
|
$48,470,898
3,512,384 shares
|
— | 31 Dec 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q1 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
188
Shares
59,586,416
Rows available
188
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q1 2026 vs Q1 2026 Across Filers
Q1 2026 holders
188
Q1 2026 holders
188
Holder diff
0
| Investor | Q1 2026 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q1 2026 value | Q1 2026 value | Value change | Value Chg % |
|---|