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 2022 vs. Q4 2021
How the institutions holding Prothena Corp Public Ltd Co changed between Q4 2021 and Q1 2022.
All holders in Q1 2022All holders in Q4 2021
| Measure | Q4 2021 | Of which not filed for Q1 2022 | Q1 2022 | Change |
|---|---|---|---|---|
| Holders | 196 | 3 | 174 | −19 |
| Shares | 42.8M | 8 | 44.1M | +1.28M (+3.0%) |
| Value | $2.12B | $0 | $1.61B | −$502.5M (−23.7%) |
3 institutions that held it in Q4 2021 haven't filed for Q1 2022 yet. Not filing isn't selling, so the changes leave them out.
New holders (18)
Institutions that held Prothena Corp Public Ltd Co at the end of Q1 2022 but not at the end of Q4 2021.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Maple Rock Capital Partners Inc. | 334,000 | $12.2M | 1.35% |
| Paradigm Biocapital Advisors LP | 267,946 | $9.80M | 2.59% |
| Sessa Capital IM, L.P. | 187,000 | $6.84M | 0.42% |
| AXA S.A. | 35,100 | $1.28M | 0.00% |
| Engineers Gate Manager LP | 21,992 | $804.0K | 0.03% |
| Twinbeech Capital LP | 18,374 | $672.0K | 0.03% |
| Algert Global LLC | 16,875 | $617.0K | 0.04% |
| AlphaCrest Capital Management LLC | 15,348 | $561.0K | 0.03% |
| HighTower Advisors, LLC | 7,820 | $286.0K | 0.00% |
| E Fund Management Co., Ltd. | 7,202 | $263.0K | 0.01% |
| Wetherby Asset Management Inc | 6,582 | $241.0K | 0.01% |
| Amalgamated Financial Corp. | 5,541 | $203.0K | 0.00% |
| Point72 Hong Kong Ltd | 3,863 | $141.0K | 0.01% |
| Lloyd Advisory Services, LLC. | 48 | $2.00K | 0.00% |
| JFS Wealth Advisors, LLC | 3 | $0 | 0.00% |
| Disciplined Investments, LLC | 2 | $0 | 0.00% |
| Cordant, Inc. | 4 | $0 | 0.00% |
| Schubert & Co | 3 | $0 | 0.00% |
Sold out (37)
Institutions that held Prothena Corp Public Ltd Co at the end of Q4 2021 and filed for Q1 2022 without it.
Not filed for Q1 2022 yet (3)
Institutions that held Prothena Corp Public Ltd Co at the end of Q4 2021 and haven't filed a 13F for Q1 2022. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q4 2021 | Value, Q4 2021 |
|---|---|---|
| Harbour Investments, Inc. | 4 | $0 |
| Reilly Financial Advisors, LLC | 1 | $0 |
| NEXT Financial Group, Inc | 3 | $0 |