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ADAR1 Capital Management, LLC

Position in PRTA — Prothena Corp Public Ltd Co

CIK 1940272 AUSTIN, TX

Position in PRTA

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$15,218,897
-$152,728 QoQ
Shares Held
1,554,535
-1.7% QoQ
Ownership
3.03%
of shares outstanding
% of Portfolio
0.74%
of 13F equity value
Holder Rank
#8
of 187 holders
Holding Since
Dec 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

ADAR1 Capital Management, LLC holds $1,760,528,411 across 192 Biotechnology names. PRTA ranks #25 (0.9% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in PRTA

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9 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $15,218,897 1,554,535
2026-03-31 $15,371,625 1,581,443
2025-12-31 $13,921,646 1,457,764
2025-09-30 $14,338,396 1,469,098
2025-09-30 $14,338,396 1,469,098
2025-06-30 $20,486,304 3,375,009
2024-06-30 $123,592 5,988
2024-03-31 $148,322 5,988
2023-12-31 $221,746 6,102