Fairmount Funds Management LLC
Position in JBIO — Jade Biosciences, Inc.
CIK 1802528
WEST CONSHOHOCKEN, PA
Position in JBIO
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$101,178,636
+$37,202,046 QoQ
Shares Held
4,553,494
0.0% QoQ
Ownership
7.16%
of shares outstanding
% of Portfolio
6.69%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Jun 2025
5 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in JBIO Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Jun 30, 2026Fairmount Funds Management LLC holds $1,512,967,792 across 12 Biotechnology names. JBIO ranks #5 (6.7% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ORKA |
Oruka Therapeutics, Inc.
|
3,705,262 | $352,629,784 | |
| 2 | DNTH |
Dianthus Therapeutics, Inc. /DE/
|
2,537,191 | $247,325,378 | |
| 3 | DMRA |
Damora Therapeutics, Inc.
|
8,713,000 | $226,625,130 | |
| 4 | COGT |
Cogent Biosciences, Inc.
|
5,503,418 | $212,982,276 | |
| 5 | JBIO |
Jade Biosciences, Inc.
This page
|
4,553,494 | $101,178,636 | |
| 6 | ELVN |
Enliven Therapeutics, Inc.
|
1,855,644 | $94,173,933 | |
| 7 | VRDN |
Viridian Therapeutics, Inc.\DE
|
5,090,928 | $93,520,347 | |
| 8 | ZBIO |
Zenas BioPharma, Inc.
|
2,359,025 | $59,872,054 |
All Filings in JBIO
Export CSV
5 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $101,178,636 | 4,553,494 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $63,976,590 | 4,553,494 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $70,260,412 | 4,553,494 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $27,791,775 | 3,220,368 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $32,171,476 | 3,220,368 | Shares | Sole | 2025-08-14 | |
| No filing history on record for this holder in this stock. | ||||||