Prothena Corp Public Ltd Co
PRTA- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001559053
In the last 90 days, Prothena Corp Public Ltd Co insiders filed 6 open-market purchases and 2 sales; 187 institutions reported holding it in 13F filings for Q2 2026, worth $462.7M in total; no superinvestor holds it.
Q1 2024 vs. Q4 2023
How the institutions holding Prothena Corp Public Ltd Co changed between Q4 2023 and Q1 2024.
All holders in Q1 2024All holders in Q4 2023
| Measure | Q4 2023 | Of which not filed for Q1 2024 | Q1 2024 | Change |
|---|---|---|---|---|
| Holders | 187 | 2 | 169 | −16 |
| Shares | 53.6M | 67.0K | 53.5M | −26.4K (0.0%) |
| Value | $1.95B | $2.44M | $1.33B | −$619.7M (−31.9%) |
2 institutions that held it in Q4 2023 haven't filed for Q1 2024 yet. Not filing isn't selling, so the changes leave them out.
New holders (25)
Institutions that held Prothena Corp Public Ltd Co at the end of Q1 2024 but not at the end of Q4 2023.
Sold out (41)
Institutions that held Prothena Corp Public Ltd Co at the end of Q4 2023 and filed for Q1 2024 without it.
Not filed for Q1 2024 yet (2)
Institutions that held Prothena Corp Public Ltd Co at the end of Q4 2023 and haven't filed a 13F for Q1 2024. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q4 2023 | Value, Q4 2023 |
|---|---|---|
| Putnam Investments LLC | 66,516 | $2.42M |
| Neo Ivy Capital Management | 482 | $18.0K |