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XTX Topco Ltd

Position in PRTA — Prothena Corp Public Ltd Co

CIK 1828301 LONDON, X0

Position in PRTA

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$839,169
-$58,239 QoQ
Shares Held
85,717
-7.2% QoQ
Ownership
0.167%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#49
of 187 holders
Holding Since
Sep 2023
8 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in PRTA Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

XTX Topco Ltd holds $413,183,716 across 381 Biotechnology names. PRTA ranks #132 (0.2% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in PRTA

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8 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $839,169 85,717
2026-03-31 $897,408 92,326
2025-12-31 $524,113 54,881
2025-09-30 $154,286 15,808
2024-12-31 $258,510 18,665
2024-09-30 $260,385 15,564
2023-12-31 $263,973 7,264
2023-09-30 $536,154 11,112