D. E. Shaw & Co., Inc.
- SEC CIK
- 0001009207
- Latest filing
- Aug 14, 2026
PRTA holding history
Prothena Corp Public Ltd Co in every 13F filed by D. E. Shaw & Co., Inc., 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 (Q2 2026)
- 1,611,457
- Value
- $15.8M
- % of portfolio
- <0.1%
- Quarters held
- 15
- Since Q1 2021
| Quarter | Shares | Value | % of portfolio | Share change | Action | All holders |
|---|---|---|---|---|---|---|
| Q2 2026 | 1,611,457 | $15.8M | <0.1% | −151,890−8.6% | Reduced | Holders |
| Q1 2026 | 1,763,347 | $17.1M | <0.1% | +81,978+4.9% | Added | Holders |
| Q4 2025 | 1,681,369 | $16.1M | <0.1% | +365,951+27.8% | Added | Holders |
| Q3 2025 | 1,315,418 | $12.8M | <0.1% | +923,923+236.0% | Added | Holders |
| Q2 2025 | 391,495 | $2.38M | <0.1% | +373,692+2,099.0% | Added | Holders |
| Q1 2025 | 17,803 | $220.3K | <0.1% | +17,803 | New | Holders |
| Q2 2023 | 0 | $0 | 0.0% | −5,705−100.0% | Sold out | Holders |
| Q1 2023 | 5,705 | $276.5K | <0.1% | −21,151−78.8% | Reduced | Holders |
| Q4 2022 | 26,856 | $1.62M | <0.1% | −78,374−74.5% | Reduced | Holders |
| Q3 2022 | 105,230 | $6.38M | <0.1% | +44,034+72.0% | Added | Holders |
| Q2 2022 | 61,196 | $1.66M | <0.1% | −25,957−29.8% | Reduced | Holders |
| Q1 2022 | 87,153 | $3.19M | <0.1% | −24,912−22.2% | Reduced | Holders |
| Q4 2021 | 112,065 | $5.54M | <0.1% | +78,744+236.3% | Added | Holders |
| Q3 2021 | 33,321 | $2.37M | <0.1% | +13,026+64.2% | Added | Holders |
| Q2 2021 | 20,295 | $1.04M | <0.1% | −39,003−65.8% | Reduced | Holders |
| Q1 2021 | 59,298 | $1.49M | <0.1% | – | – | Holders |
Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.