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Bank of New York Mellon Corp

Bank

Position in PRTA — Prothena Corp Public Ltd Co

CIK 1390777 NEW YORK, NY

Position in PRTA

as of Jun 30, 2026 · filed Aug 6, 2026
Position Value
$1,310,937
-$14,111 QoQ
Shares Held
133,906
-1.8% QoQ
Ownership
0.261%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#42
of 187 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 85% Shared 0% None 15%

Common Shares in PRTA Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

Bank of New York Mellon Corp holds $4,845,290,998 across 311 Biotechnology names. PRTA ranks #181 (0.0% 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 $1,310,937 133,906
2026-03-31 $1,325,048 136,322
2025-12-31 $1,267,283 132,700
2025-09-30 $1,501,086 153,800
2025-06-30 $900,482 148,350
2025-03-31 $1,806,859 146,009
2024-12-31 $2,080,795 150,238
2024-09-30 $2,188,047 130,786
2024-06-30 $3,414,328 165,423
2024-03-31 $3,612,578 145,845
2023-12-31 $16,073,505 442,309
2023-09-30 $24,095,178 499,382
2023-06-30 $35,111,825 514,233
2023-03-31 $7,953,535 164,092
2022-12-31 $8,254,067 136,997
2022-09-30 $8,499,839 140,192
2022-06-30 $3,240,731 119,364
2022-03-31 $5,642,055 154,281
2021-12-31 $7,531,522 152,460
2021-09-30 $9,778,950 137,287
2021-06-30 $6,963,740 135,455
2021-03-31 $3,265,599 130,000
2020-12-31 $1,675,658 139,522
2020-09-30 $1,485,331 148,682
2020-06-30 $1,668,881 159,549
2020-03-31 $3,557,105 332,440