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UBS Group AG

Position in PRTA — Prothena Corp Public Ltd Co

CIK 1610520 ZURICH, V8

Position in PRTA

as of Jun 30, 2026 · filed Aug 13, 2026
Position Value
$2,363,550
-$829,381 QoQ
Shares Held
241,425
-26.5% QoQ
Ownership
0.470%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#33
of 187 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in PRTA Over Time

Shares Held

Position Value (USD)

Derivatives in PRTA

reported options exposure · as of Mar 31, 2022
CallValue
$1,462,800
CallShares
40,000
PutValue
$0
PutShares
0

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Biotechnology

Healthcare · as of Jun 30, 2026

UBS Group AG holds $8,751,173,307 across 562 Biotechnology names. PRTA ranks #203 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in PRTA

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27 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $2,363,550 241,425
2026-03-31 $3,192,931 328,491
2025-12-31 $4,071,737 426,360
2025-09-30 $3,912,265 400,847
2025-06-30 $368,229 60,664
2025-03-31 $3,025,425 244,479
2024-12-31 $5,142,323 371,287
2024-09-30 $1,045,724 62,506
2024-06-30 $924,010 44,768
2024-03-31 $4,921,302 198,680
2023-12-31 $4,814,940 132,497
2023-09-30 $2,183,408 45,252
2023-06-30 $1,527,764 22,375
2023-03-31 $2,987,835 61,643
2022-12-31 $5,486,907 91,069
2022-09-30 $372,813 6,149
2022-06-30 $565,344 20,823
2022-03-31 $1,462,800 40,000
2022-03-31 $1,770,682 48,419
2021-12-31 $3,673,976 74,372
2021-09-30 $5,521,535 77,517
2021-06-30 $85,443 1,662
2021-03-31 $605,040 24,086
2020-12-31 $103,561 8,623
2020-09-30 $8,091 810
2020-06-30 $18,848 1,802
2020-03-31 $193,498 18,084