Connor, Clark & Lunn Investment Management Ltd.
Position in PRTA — Prothena Corp Public Ltd Co
CIK 1596800
VANCOUVER, A1
Position in PRTA
as of Jun 30, 2026
· filed Aug 13, 2026
Position Value
$1,876,674
+$354,999 QoQ
Shares Held
191,693
+22.4% QoQ
Ownership
0.373%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#38
of 187 holders
Holding Since
Mar 2020
18 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, 2026Connor, Clark & Lunn Investment Management Ltd. holds $650,455,383 across 105 Biotechnology names. PRTA ranks #52 (0.3% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
135,236 | $67,175,777 | |
| 2 | IONS |
Ionis Pharmaceuticals Inc
|
684,236 | $54,253,072 | |
| 3 | ARWR |
Arrowhead Pharmaceuticals, Inc.
|
625,569 | $50,990,129 | |
| 4 | MIRM |
Mirum Pharmaceuticals, Inc.
|
420,063 | $49,176,775 | |
| 5 | REGN |
Regeneron Pharmaceuticals, Inc.
|
42,465 | $26,478,625 | |
| 6 | AXSM |
Axsome Therapeutics, Inc.
|
97,698 | $23,913,539 | |
| 7 | INSM |
INSMED Inc
|
212,676 | $22,675,515 | |
| 8 | VKTX |
Viking Therapeutics, Inc.
|
530,607 | $20,698,979 |
All Filings in PRTA
Export CSV
18 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $1,876,674 | 191,693 | Shares | Sole | 2026-08-13 | |
| 2026-03-31 | $1,521,675 | 156,551 | Shares | Sole | 2026-05-11 | |
| 2025-12-31 | $1,202,249 | 125,890 | Shares | Sole | 2026-02-10 | |
| 2025-06-30 | $114,698 | 18,896 | Shares | Sole | 2025-08-07 | |
| 2025-03-31 | $1,132,089 | 91,482 | Shares | Sole | 2025-05-12 | |
| 2024-12-31 | $1,271,984 | 91,840 | Shares | Sole | 2025-02-10 | |
| 2024-09-30 | $2,049,291 | 122,492 | Shares | Sole | 2024-11-08 | |
| 2024-06-30 | $2,328,728 | 112,826 | Shares | Sole | 2024-08-09 | |
| 2024-03-31 | $3,267,286 | 131,905 | Shares | Sole | 2024-05-09 | |
| 2023-12-31 | $5,666,932 | 155,942 | Shares | Sole | 2024-02-09 | |
| 2023-09-30 | $6,165,143 | 127,775 | Shares | Sole | 2023-11-13 | |
| 2023-06-30 | $7,520,086 | 110,136 | Shares | Sole | 2023-08-10 | |
| 2023-03-31 | $4,334,381 | 89,424 | Shares | Sole | 2023-05-10 | |
| 2022-12-31 | $3,641,028 | 60,432 | Shares | Sole | 2023-02-10 | |
| 2022-09-30 | $1,670,720 | 27,556 | Shares | Sole | 2022-11-10 | |
| 2022-06-30 | $435,214 | 16,030 | Shares | Sole | 2022-08-05 | |
| 2021-09-30 | $476,528 | 6,690 | Shares | Sole | 2021-11-12 | |
| 2020-03-31 | $280,607 | 26,225 | Shares | Sole | 2020-05-13 | |
| No filing history on record for this holder in this stock. | ||||||