Prothena Corporation plc
DE ˙ DB ˙ IE00B91XRN20
7,74 € ↑0,39 (5,30%)
2026-06-04
CENA AKCJI
SecurityDE:0PT / Prothena Corporation plc
InstitutionPrudential Financial Inc
Latest Disclosed Ownership10,025 shares
Latest Disclosed Value $ 97,443
Prudential Financial Inc ownership in 0PT / Prothena Corporation plc

On May 13, 2026 - Prudential Financial Inc filed a 13F-HR form disclosing ownership of 10,025 shares of Prothena Corporation plc (DE:0PT) valued at $82,205 USD as of March 31, 2026. The entity filed a previous 13F-HR on November 13, 2023 disclosing 0 shares of Prothena Corporation plc. The current value of the position is $77,634 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-13 2026-03-31 13F PROTHENA CORP SHS G72800108 10,025 10,025 97 0.0001
2023-11-13 2023-09-30 13F PROTHENA CORP SHS G72800108 0 -22,911 -100.00 0 -100.00
2023-08-11 2023-06-30 13F PROTHENA CORP SHS G72800108 22,911 4,950 27.56 1,564 79.77 0.0023
2023-05-12 2023-03-31 13F PROTHENA CORP SHS G72800108 17,961 -986 -5.20 871 -23.75 0.0014
2023-02-14 2022-12-31 13F PROTHENA CORP SHS G72800108 18,947 -20,932 -52.49 1,142 -52.77 0.0019
2022-11-04 2022-09-30 13F PROTHENA CORP SHS G72800108 39,879 -10 -0.03 2,416 123.29 0.0041
2022-08-15 2022-06-30 13F PROTHENA CORP SHS G72800108 39,889 -32,420 -44.84 1,082 -59.09 0.0017
2022-05-13 2022-03-31 13F PROTHENA CORP SHS G72800108 72,309 -4,260 -5.56 2,645 -30.06 0.0035
2022-02-14 2021-12-31 13F PROTHENA CORP SHS G72800108 76,569 -67,880 -46.99 3,782 -63.24 0.0047
2021-11-15 2021-09-30 13F PROTHENA CORP SHS G72800108 144,449 87,270 152.63 10,289 250.09 0.0144
2021-08-16 2021-06-30 13F PROTHENA CORP SHS G72800108 57,179 -15,815 -21.67 2,939 60.25 0.0040
2021-05-12 2021-03-31 13F PROTHENA CORP SHS G72800108 72,994 -4,404 -5.69 1,834 97.42 0.0027
2021-08-16 2020-12-31 13F/A-1 PROTHENA CORP SHS 0012 G72800108 77,398 6,100 8.56 929 30.48 0.0016
2021-02-16 2020-12-31 13F PROTHENA CORP SHS G72800108 77,398 6,100 929 0.0016
2020-11-16 2020-09-30 13F PROTHENA CORP SHS G72800108 71,298 -11,697 -14.09 712 -17.97 0.0013
2020-08-12 2020-06-30 13F PROTHENA CORP SHS G72800108 82,995 3,244 4.07 868 1.76 0.0017
2020-05-12 2020-03-31 13F PROTHENA CORP SHS G72800108 79,751 239 0.30 853 -32.25 0.0019
2020-02-11 2019-12-31 13F PROTHENA CORP SHS G72800108 79,512 1,140 1.45 1,259 105.05 0.0019
2019-11-13 2019-09-30 13F PROTHENA CORP SHS G72800108 78,372 68,102 663.12 614 463.30 0.0010
2019-08-08 2019-06-30 13F PROTHENA CORP SHS G72800108 10,270 10,270 109 0.0002
2017-02-07 2016-12-31 13F PROTHENA CORP SHS G72800108 0 -35,960 -100.00 0 -100.00
2016-11-04 2016-09-30 13F PROTHENA CORP SHS G72800108 35,960 -30,810 -46.14 2,157 -7.58 0.0036
2016-08-09 2016-06-30 13F PROTHENA CORP SHS G72800108 66,770 -4,500 -6.31 2,334 -20.42 0.0039
2016-05-09 2016-03-31 13F PROTHENA CORP SHS G72800108 71,270 -43,800 -38.06 2,933 -62.57 0.0052
2016-02-12 2015-12-31 13F PROTHENA CORP SHS G72800108 115,070 -4,200 -3.52 7,837 44.91 0.0142
2015-11-10 2015-09-30 13F PROTHENA CORP SHS G72800108 119,270 -18,200 -13.24 5,408 -25.31 0.0107
2015-08-06 2015-06-30 13F PROTHENA CORP SHS G72800108 137,470 -24,700 -15.23 7,241 17.07 0.0129
2015-05-01 2015-03-31 13F PROTHENA CORP SHS G72800108 162,170 2,500 1.57 6,185 86.58 0.0107
2015-02-06 2014-12-31 13F PROTHENA CORP SHS G72800108 159,670 -10,700 -6.28 3,315 -12.19 0.0060
2014-11-12 2014-09-30 13F PROTHENA CORP SHS G72800108 170,370 98,800 138.05 3,775 133.89 0.0071
2014-08-13 2014-06-30 13F PROTHENA CORP SHS G72800108 71,570 71,570 1,614 0.0028
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.