PRTA position history
The shares of Prothena (PRTA) that Palo Alto Investors LP reported in each quarter’s 13F.
Shares held by quarter
New Add Reduce Exit
- 2021 Q3: 1,685,282 shares, $120M, 7.2% of portfolio
- 2021 Q4: 1,685,282 shares, $83M, 5.3% of portfolio
- 2022 Q1: 1,681,477 shares, $61M, 4.8% of portfolio, Reduce −0.2%
- 2022 Q2: 1,681,477 shares, $46M, 4.0% of portfolio
- 2022 Q3: 1,649,777 shares, $100M, 7.9% of portfolio, Reduce −1.9%
- 2022 Q4: 1,658,577 shares, $100M, 8.5% of portfolio, Add +0.5%
- 2023 Q1: 1,663,777 shares, $81M, 6.7% of portfolio, Add +0.3%
- 2023 Q2: 1,657,458 shares, $113M, 9.1% of portfolio, Reduce −0.4%
- 2023 Q3: 1,657,458 shares, $80M, 7.6% of portfolio
- 2023 Q4: 3,320,114 shares, $121M, 10.9% of portfolio, Add +100.3%
- 2024 Q1: 1,663,448 shares, $41M, 4.6% of portfolio, Reduce −49.9%
- 2024 Q2: 1,666,378 shares, $34M, 4.0% of portfolio, Add +0.2%
- 2024 Q3: 1,737,964 shares, $29M, 3.8% of portfolio, Add +4.3%
- 2024 Q4: 1,737,964 shares, $24M, 3.7% of portfolio
- 2025 Q1: 1,659,734 shares, $21M, 3.9% of portfolio, Reduce −4.5%
- 2025 Q2: 1,274,753 shares, $7.7M, 1.6% of portfolio, Reduce −23.2%
- 2025 Q3: 1,324,028 shares, $13M, 2.4% of portfolio, Add +3.9%
- 2025 Q4: 1,320,510 shares, $13M, 1.8% of portfolio, Reduce −0.3%
- 2026 Q1: 1,208,568 shares, $12M, 1.8% of portfolio, Reduce −8.5%
- 2026 Q2: 1,143,155 shares, $11M, 1.5% of portfolio, Reduce −5.4%
| Holdings date | Value | % of holdings | Shares | Filing date | All 13F holders |
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