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STATE STREET CORP

Position in PRTA — Prothena Corp Public Ltd Co

CIK 93751 BOSTON, MA

Position in PRTA

as of Jun 30, 2026 · filed Aug 7, 2026
Position Value
$23,431,620
+$4,589,420 QoQ
Shares Held
2,393,424
+23.5% QoQ
Ownership
4.66%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#4
of 187 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 9% Shared 0% None 91%

Common Shares in PRTA Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

STATE STREET CORP holds $36,552,510,511 across 411 Biotechnology names. PRTA ranks #152 (0.1% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in PRTA

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $23,431,620 2,393,424
2026-03-31 $18,842,200 1,938,498
2025-12-31 $21,657,509 2,267,802
2025-09-30 $8,794,130 901,038
2025-06-30 $6,100,362 1,005,002
2025-03-31 $18,826,879 1,521,364
2024-12-31 $25,783,727 1,861,641
2024-09-30 $28,021,227 1,674,909
2024-06-30 $39,886,222 1,932,472
2024-03-31 $86,050,880 3,473,996
2023-12-31 $100,246,215 2,758,564
2023-09-30 $101,818,742 2,110,233
2023-06-30 $127,934,733 1,873,678
2023-03-31 $101,906,139 2,102,458
2022-12-31 $123,630,590 2,051,960
2022-09-30 $114,093,170 1,881,794
2022-06-30 $60,980,881 2,246,073
2022-03-31 $86,582,510 2,367,583
2021-12-31 $97,463,730 1,972,950
2021-09-30 $100,095,530 1,405,244
2021-06-30 $63,156,105 1,228,479
2021-03-31 $30,251,815 1,204,292
2020-12-31 $7,327,901 610,150
2020-09-30 $12,322,175 1,233,451
2020-06-30 $15,037,557 1,437,625
2020-03-31 $11,271,893 1,053,448