Clearbridge Investments, LLC
Position in PTGX — Protagonist Therapeutics, Inc
CIK 1348883
NEW YORK, NY
Position in PTGX
as of Jun 30, 2026
· filed Aug 13, 2026
Position Value
$88,911,564
+$23,371,736 QoQ
Shares Held
725,335
+16.6% QoQ
Ownership
1.12%
of shares outstanding
% of Portfolio
0.07%
of 13F equity value
Holder Rank
#24
of 342 holders
Holding Since
Dec 2025
3 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in PTGX Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Jun 30, 2026Clearbridge Investments, LLC holds $2,924,434,154 across 28 Biotechnology names. PTGX ranks #5 (3.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
2,342,915 | $1,163,796,167 | |
| 2 | ALNY |
Alnylam Pharmaceuticals, Inc.
|
1,259,483 | $379,142,167 | |
| 3 | ARGX |
Argenx SE
|
253,776 | $235,445,759 | |
| 4 | TGTX |
Tg Therapeutics, Inc.
|
2,650,192 | $145,601,548 | |
| 5 | PTGX |
Protagonist Therapeutics, Inc
This page
|
725,335 | $88,911,564 | |
| 6 | RYTM |
Rhythm Pharmaceuticals, Inc.
|
696,473 | $77,329,397 | |
| 7 | INSM |
INSMED Inc
|
715,922 | $76,331,603 | |
| 8 | MIRM |
Mirum Pharmaceuticals, Inc.
|
639,734 | $74,893,659 |
All Filings in PTGX
Export CSV
3 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $88,911,564 | 725,335 | Shares | Sole | 2026-08-13 | |
| 2026-03-31 | $65,539,828 | 621,820 | Shares | Sole | 2026-05-13 | |
| 2025-12-31 | $42,782,800 | 489,842 | Shares | Sole | 2026-02-11 | |
| No filing history on record for this holder in this stock. | ||||||