Avidity Partners Management LP
- SEC CIK
- 0001791827
- Latest filing
- Aug 14, 2026
PRTA holding history
Prothena Corp Public Ltd Co in every 13F filed by Avidity Partners Management LP, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.
PRTA overviewAll 13F holders of PRTAFull Q2 2026 holdings
- Shares (Q4 2023)
- 0
- Sold out in Q4 2023
- Value
- $0
- % of portfolio
- 0.0%
- Quarters held
- 6
- Since Q2 2021
| Quarter | Shares | Value | % of portfolio | Share change | Action | All holders |
|---|---|---|---|---|---|---|
| Q4 2023 | 0 | $0 | 0.0% | −382,305−100.0% | Sold out | Holders |
| Q3 2023 | 382,305 | $18.4M | 0.7% | −152,695−28.5% | Reduced | Holders |
| Q2 2023 | 535,000 | $36.5M | 1.3% | −533,200−49.9% | Reduced | Holders |
| Q1 2023 | 1,068,200 | $51.8M | 1.7% | −1,884,800−63.8% | Reduced | Holders |
| Q4 2022 | 2,953,000 | $177.9M | 4.2% | +986,000+50.1% | Added | Holders |
| Q3 2022 | 1,967,000 | $119.3M | 2.6% | +1,967,000 | New | Holders |
| Q3 2021 | 0 | $0 | 0.0% | −182,000−100.0% | Sold out | Holders |
| Q2 2021 | 182,000 | $9.36M | 0.3% | +182,000 | New | Holders |