Ameritas Investment Partners, Inc.
Position in PRTA — Prothena Corp Public Ltd Co
CIK 1055980
LINCOLN, NE
Position in PRTA
as of Jun 30, 2026
· filed Aug 13, 2026
Position Value
$33,560
+$240 QoQ
Shares Held
3,428
0.0% QoQ
Ownership
0.007%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#132
of 187 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 0%
Shared 0%
None 100%
Common Shares in PRTA Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Jun 30, 2026Ameritas Investment Partners, Inc. holds $62,741,652 across 267 Biotechnology names. PRTA ranks #174 (0.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
12,422 | $6,170,379 | |
| 2 | EXEL |
Exelixis, Inc.
|
75,969 | $4,133,473 | |
| 3 | HALO |
Halozyme Therapeutics, Inc.
|
40,729 | $3,187,858 | |
| 4 | CYTK |
Cytokinetics Inc
|
36,992 | $3,151,348 | |
| 5 | ROIV |
Roivant Sciences Ltd.
|
83,064 | $2,939,634 | |
| 6 | REGN |
Regeneron Pharmaceuticals, Inc.
|
4,593 | $2,863,919 | |
| 7 | JAZZ |
Jazz Pharmaceuticals plc
|
11,547 | $2,782,480 | |
| 8 | ARWR |
Arrowhead Pharmaceuticals, Inc.
|
25,923 | $2,112,983 |
All Filings in PRTA
Export CSV
26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $33,560 | 3,428 | Shares | Other | 2026-08-13 | |
| 2026-03-31 | $33,320 | 3,428 | Shares | Other | 2026-05-13 | |
| 2025-12-31 | $32,737 | 3,428 | Shares | Other | 2026-02-11 | |
| 2025-09-30 | $33,457 | 3,428 | Shares | Other | 2025-11-10 | |
| 2025-06-30 | $26,513 | 4,368 | Shares | Other | 2025-08-12 | |
| 2025-03-31 | $54,054 | 4,368 | Shares | Other | 2025-05-12 | |
| 2024-12-31 | $60,496 | 4,368 | Shares | Other | 2025-02-13 | |
| 2024-09-30 | $73,076 | 4,368 | Shares | Other | 2024-11-13 | |
| 2024-06-30 | $90,155 | 4,368 | Shares | Other | 2024-08-13 | |
| 2024-03-31 | $108,195 | 4,368 | Shares | Other | 2024-05-13 | |
| 2023-12-31 | $158,733 | 4,368 | Shares | Other | 2024-02-14 | |
| 2023-09-30 | $198,741 | 4,119 | Shares | Other | 2023-11-13 | |
| 2023-06-30 | $233,722 | 3,423 | Shares | Other | 2023-08-11 | |
| 2023-03-31 | $152,292 | 3,142 | Shares | Other | 2023-05-10 | |
| 2022-12-31 | $176,773 | 2,934 | Shares | Other | 2023-02-13 | |
| 2022-09-30 | $163,822 | 2,702 | Shares | Other | 2022-11-14 | |
| 2022-06-30 | $73,359 | 2,702 | Shares | Other | 2022-08-12 | |
| 2022-03-31 | $98,812 | 2,702 | Shares | Other | 2022-05-13 | |
| 2021-12-31 | $133,478 | 2,702 | Shares | Other | 2022-02-11 | |
| 2021-09-30 | $192,463 | 2,702 | Shares | Other | 2021-11-15 | |
| 2021-06-30 | $132,483 | 2,577 | Shares | Other | 2021-08-06 | |
| 2021-03-31 | $64,734 | 2,577 | Shares | Other | 2021-05-14 | |
| 2020-12-31 | $30,949 | 2,577 | Shares | Other | 2021-02-12 | |
| 2020-09-30 | $32,457 | 3,249 | Shares | Other | 2020-11-13 | |
| 2020-06-30 | $33,984 | 3,249 | Shares | Other | 2020-08-05 | |
| 2020-03-31 | $34,764 | 3,249 | Shares | Other | 2020-05-13 | |
| No filing history on record for this holder in this stock. | ||||||