Prothena shares owned by Palo Alto Investors
Quarter-by-quarter ownership of Prothena (PRTA) shares owned by Palo Alto Investors
from 13F filings
Historical chart of Palo Alto Investors investment in Prothena
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All positions including Prothena held by Palo Alto Investors consolidated in one spreadsheet with up to 7 years of data
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Quarterly reported holdings in Prothena by Palo Alto Investors
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2023-12-31 | $60M | 1.7M | 36.34 |
| 2023-09-30 | $80M | 1.7M | 48.25 |
| 2023-06-30 | $113M | 1.7M | 68.28 |
| 2023-03-31 | $81M | 1.7M | 48.47 |
| 2022-12-31 | $100M | 1.7M | 60.25 |
| 2022-09-30 | $100M | 1.6M | 60.63 |
| 2022-06-30 | $46M | 1.7M | 27.15 |
| 2022-03-31 | $62M | 1.7M | 36.57 |
| 2021-12-31 | $83M | 1.7M | 49.40 |
| 2021-09-30 | $120M | 1.7M | 71.23 |
| 2021-06-30 | $89M | 1.7M | 51.41 |
| 2021-03-31 | $44M | 1.7M | 25.12 |
| 2020-12-31 | $20M | 1.7M | 12.01 |
| 2020-09-30 | $13M | 1.3M | 9.99 |
| 2020-06-30 | $8.1M | 771k | 10.46 |
| 2020-03-31 | $8.3M | 775k | 10.70 |
| 2019-12-31 | $16M | 993k | 15.83 |
| 2019-09-30 | $7.9M | 1.0M | 7.84 |
| 2019-06-30 | $12M | 1.1M | 10.57 |
| 2019-03-31 | $13M | 1.1M | 12.13 |
| 2018-12-31 | $11M | 1.1M | 10.30 |
| 2018-09-30 | $14M | 1.1M | 13.08 |
| 2018-06-30 | $16M | 1.1M | 14.58 |
| 2018-03-31 | $40M | 1.1M | 36.71 |
| 2017-12-31 | $41M | 1.1M | 37.49 |
| 2017-09-30 | $71M | 1.1M | 64.77 |
| 2017-06-30 | $58M | 1.1M | 54.12 |
| 2017-03-31 | $59M | 1.1M | 55.79 |
| 2016-12-31 | $49M | 994k | 49.19 |
| 2016-09-30 | $56M | 935k | 59.97 |
| 2016-06-30 | $28M | 789k | 34.96 |
| 2016-03-31 | $29M | 696k | 41.16 |
| 2015-12-31 | $47M | 696k | 68.11 |
| 2015-09-30 | $32M | 696k | 45.34 |
| 2015-06-30 | $37M | 696k | 52.67 |
| 2015-03-31 | $27M | 696k | 38.14 |
| 2014-12-31 | $14M | 691k | 20.76 |
| 2014-09-30 | $15M | 674k | 22.16 |
| 2014-06-30 | $12M | 534k | 22.55 |
| 2014-03-31 | $20M | 533k | 38.31 |
| 2013-12-31 | $14M | 537k | 26.52 |
| 2013-09-30 | $1.8M | 89k | 20.23 |
| 2013-06-30 | $1.1M | 89k | 12.92 |