Prothena shares owned by American International
Quarter-by-quarter ownership of Prothena (PRTA) shares owned by American International
from 13F filings
Historical chart of American International investment in Prothena
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Quarterly reported holdings in Prothena by American International
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2023-12-31 | $762k | 21k | 36.34 |
| 2023-09-30 | $998k | 21k | 48.25 |
| 2023-06-30 | $1.4M | 20k | 68.28 |
| 2023-03-31 | $915k | 19k | 48.47 |
| 2022-12-31 | $1.0M | 17k | 60.25 |
| 2022-09-30 | $1.0M | 17k | 60.62 |
| 2022-06-30 | $451k | 17k | 27.16 |
| 2022-03-31 | $656k | 18k | 36.55 |
| 2021-12-31 | $949k | 19k | 49.40 |
| 2021-09-30 | $1.4M | 19k | 71.25 |
| 2021-06-30 | $982k | 19k | 51.39 |
| 2021-03-31 | $450k | 18k | 25.09 |
| 2020-12-31 | $215k | 18k | 12.02 |
| 2020-09-30 | $184k | 18k | 10.00 |
| 2020-06-30 | $197k | 19k | 10.47 |
| 2020-03-31 | $255k | 24k | 10.71 |
| 2019-12-31 | $399k | 25k | 15.85 |
| 2019-09-30 | $199k | 25k | 7.84 |
| 2019-06-30 | $270k | 26k | 10.56 |
| 2019-03-31 | $311k | 26k | 12.14 |
| 2018-12-31 | $272k | 27k | 10.28 |
| 2018-09-30 | $349k | 27k | 13.09 |
| 2018-06-30 | $382k | 26k | 14.59 |
| 2018-03-31 | $911k | 25k | 36.70 |
| 2017-12-31 | $970k | 26k | 37.50 |
| 2017-09-30 | $1.7M | 26k | 64.79 |
| 2017-06-30 | $1.3M | 24k | 54.11 |
| 2017-03-31 | $1.2M | 21k | 55.80 |
| 2016-12-31 | $982k | 20k | 49.17 |
| 2016-09-30 | $1.2M | 20k | 59.97 |
| 2016-06-30 | $699k | 20k | 34.96 |
| 2016-03-31 | $754k | 18k | 41.15 |
| 2015-12-31 | $1.2M | 18k | 68.11 |
| 2015-09-30 | $832k | 18k | 45.33 |
| 2015-06-30 | $966k | 18k | 52.67 |
| 2015-03-31 | $639k | 17k | 38.14 |
| 2014-12-31 | $348k | 17k | 20.76 |
| 2014-09-30 | $383k | 17k | 22.16 |
| 2014-06-30 | $332k | 15k | 22.55 |
| 2014-03-31 | $371k | 9.7k | 38.31 |
| 2013-12-31 | $250k | 9.4k | 26.52 |
| 2013-09-30 | $161k | 8.0k | 20.23 |
| 2013-06-30 | $13 | 1 | 13.00 |