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 4 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.
13F holders, Q2 2023
Institutional positions in Prothena Corp Public Ltd Co as of Jun 30, 2023. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 196
- +4 vs. Q1 2023
- Shares held
- 52.0M
- +214.3K (+0.4%) vs. Q1 2023
- Total value
- $3.54B
- +$1.03B (+41.0%) vs. Q1 2023
- New holders
- 30
- 72 more added
- Sold out
- 26
- 58 more reduced
Compare with Q1 2023: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting PRTA on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 187 | $462.7M |
| Q1 2026 | 186 | $459.5M |
| Q4 2025 | 182 | $451.6M |
| Q3 2025 | 187 | $415.8M |
| Q2 2025 | 189 | $253.6M |
| Q1 2025 | 161 | $647.2M |
| Q4 2024 | 171 | $741.3M |
| Q3 2024 | 164 | $855.8M |
| Q2 2024 | 160 | $1.05B |
| Q1 2024 | 169 | $1.33B |
| Q4 2023 | 187 | $1.95B |
| Q3 2023 | 187 | $2.56B |
| Q2 2023 | 196 | $3.54B |
| Q1 2023 | 192 | $2.51B |
| Q4 2022 | 201 | $2.98B |
| Q3 2022 | 183 | $2.69B |
| Q2 2022 | 167 | $1.21B |
| Q1 2022 | 174 | $1.61B |
| Q4 2021 | 196 | $2.12B |
| Q3 2021 | 192 | $2.92B |
| Q2 2021 | 156 | $2.08B |
| Q1 2021 | 146 | $1.00B |
Institutions, Q2 2023
Shares, value and share of portfolio for each institution holding Prothena Corp Public Ltd Co; share changes are against Q1 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| First Trust Advisors LP | 0 | $0 | 0.00% | −21,108−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −20,861−100.0% | Sold out |
| Capula Management Ltd | 0 | $0 | 0.00% | −10,420−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −9,430−100.0% | Sold out |
| Aquatic Capital Management LLC | 0 | $0 | 0.00% | −7,000−100.0% | Sold out |
| Aigen Investment Management, LP | 0 | $0 | 0.00% | −6,503−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −6,485−100.0% | Sold out |
| Bayesian Capital Management, LP | 0 | $0 | 0.00% | −5,917−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −5,705−100.0% | Sold out |
| Brighton Jones LLC | 0 | $0 | 0.00% | −5,012−100.0% | Sold out |
| Occudo Quantitative Strategies LP | 0 | $0 | 0.00% | −4,796−100.0% | Sold out |
| Artal Group S.A. | 0 | $0 | 0.00% | −2,746−100.0% | Sold out |
| Kapitalo Investimentos Ltda | 0 | $0 | 0.00% | −2,623−100.0% | Sold out |
| Values First Advisors, Inc. | 0 | $0 | 0.00% | −2,274−100.0% | Sold out |
| Lazard Asset Management LLC | 0 | $0 | 0.00% | −1,228−100.0% | Sold out |
| Cutler Group LP | 0 | $0 | 0.00% | −500−100.0% | Sold out |
| TCI Wealth Advisors, Inc. | 0 | $0 | 0.00% | −227−100.0% | Sold out |
| Belpointe Asset Management LLC | 0 | $0 | 0.00% | −54−100.0% | Sold out |
| Schubert & Co | 0 | $0 | 0.00% | −14−100.0% | Sold out |
| Plante Moran Financial Advisors, LLC | 0 | $0 | 0.00% | −9−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −8−100.0% | Sold out |
| Steward Financial Group LLC | 0 | $0 | 0.00% | −7−100.0% | Sold out |