PRICE T ROWE ASSOCIATES INC /MD/
Position in PRTA — Prothena Corp Public Ltd Co
CIK 80255
BALTIMORE, MD
Position in PRTA
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$1,069,577
+$139,869 QoQ
Shares Held
109,252
+14.2% QoQ
Ownership
0.213%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#45
of 187 holders
Holding Since
Sep 2020
24 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in PRTA Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Jun 30, 2026PRICE T ROWE ASSOCIATES INC /MD/ holds $17,555,963,376 across 304 Biotechnology names. PRTA ranks #174 (0.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ARGX |
Argenx SE
|
2,678,047 | $2,484,611,664 | |
| 2 | REGN |
Regeneron Pharmaceuticals, Inc.
|
1,529,709 | $953,834,749 | |
| 3 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
1,728,421 | $858,558,562 | |
| 4 | KYMR |
Kymera Therapeutics, Inc.
|
7,112,980 | $815,645,416 | |
| 5 | RPRX |
Royalty Pharma plc
|
11,193,657 | $627,628,347 | |
| 6 | RVMD |
Revolution Medicines, Inc.
|
2,969,853 | $447,655,945 | |
| 7 | MRNA |
Moderna, Inc.
|
5,589,560 | $391,436,886 | |
| 8 | SRRK |
Scholar Rock Holding Corp
|
6,794,837 | $373,716,035 |
All Filings in PRTA
Export CSV
24 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $1,069,577 | 109,252 | Shares | Defined | 2026-08-14 | |
| 2026-03-31 | $929,708 | 95,649 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $778,468 | 81,515 | Shares | Defined | 2026-02-17 | |
| 2025-09-30 | $766,618 | 78,547 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $431,255 | 71,047 | Shares | Defined | 2025-08-14 | |
| 2025-03-31 | $42,766,217 | 3,455,856 | Shares | Sole | 2025-05-14 | |
| 2024-12-31 | $51,047,055 | 3,685,708 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $63,949,320 | 3,822,434 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $87,460,018 | 4,237,404 | Shares | Defined | 2024-08-14 | |
| 2024-03-31 | $104,077,867 | 4,201,771 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $153,985,335 | 4,237,351 | Shares | Sole | 2024-02-16 | |
| 2023-09-30 | $184,315,626 | 3,820,013 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $242,651,278 | 3,553,768 | Shares | Sole | 2023-08-14 | |
| 2023-03-31 | $155,215,141 | 3,202,293 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $193,155,655 | 3,205,903 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $180,795,081 | 2,981,941 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $161,971,144 | 5,965,788 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $223,579,544 | 6,113,742 | Shares | Sole | 2022-05-16 | |
| 2021-12-31 | $293,873,733 | 5,948,861 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $431,841,063 | 6,062,629 | Shares | Sole | 2021-11-15 | |
| 2021-06-30 | $299,364,799 | 5,823,085 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $83,206,131 | 3,312,346 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $173,124 | 14,415 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $145,104 | 14,525 | Shares | Sole | 2020-11-16 | |
| No filing history on record for this holder in this stock. | ||||||