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Headlands Technologies LLC

Position in PRTA — Prothena Corp Public Ltd Co

CIK 1570271 CHICAGO, IL

Position in PRTA

as of Jun 30, 2026 · filed Aug 13, 2026
Position Value
$147,603
-$75,408 QoQ
Shares Held
15,077
-35.4% QoQ
Ownership
0.029%
of shares outstanding
% of Portfolio
0.02%
of 13F equity value
Holder Rank
#104
of 187 holders
Holding Since
Sep 2023
7 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

Headlands Technologies LLC holds $60,689,199 across 67 Biotechnology names. PRTA ranks #55 (0.2% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in PRTA

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7 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $147,603 15,077
2025-12-31 $223,011 23,352
2024-12-31 $101,520 7,330
2024-09-30 $41,356 2,472
2024-06-30 $34,572 1,675
2024-03-31 $96,132 3,881
2023-09-30 $73,870 1,531