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GAMMA Investing LLC

Position in PRTA — Prothena Corp Public Ltd Co

CIK 2010235 FOSTER CITY, CA

Position in PRTA

as of Jun 30, 2026 · filed Jul 7, 2026
Position Value
$25,336
+$4,390 QoQ
Shares Held
2,588
+20.1% QoQ
Ownership
0.005%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#133
of 187 holders
Holding Since
Dec 2023
11 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

GAMMA Investing LLC holds $18,803,269 across 254 Biotechnology names. PRTA ranks #96 (0.1% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in PRTA

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11 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $25,336 2,588
2026-03-31 $20,946 2,155
2025-12-31 $4,870 510
2025-09-30 $3,767 386
2025-06-30 $1,195 197
2025-03-31 $6,001 485
2024-12-31 $1,758 127
2024-09-30 $1,120 67
2024-06-30 $7,574 367
2024-03-31 $1,436 58
2023-12-31 $1,453 40