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Prothena shares owned by Rubric Capital Management

Quarter-by-quarter ownership of Prothena (PRTA) shares owned by Rubric Capital Management from 13F filings

Historical chart of Rubric Capital Management investment in Prothena

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All positions including Prothena held by Rubric Capital Management consolidated in one spreadsheet with up to 7 years of data

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Quarterly reported holdings in Prothena by Rubric Capital Management

Quarter filed Position value Share count Share price at filing
2025-09-30 $15M 1.5M 9.76

More positions owned by Rubric Capital Management

Talen Energy Corp (TLN)
Spdr S&p 500 Etf Tr Tr Unit Put Option (SPY)
Ftai Aviation SHS (FTAI)
Teva Pharmaceutical Inds Sponsored Ads (TEVA)
Ishares Tr Russell 2000 Etf Put Option (IWM)
Golar Lng SHS (GLNG)
Roivant Sciences SHS (ROIV)
Transalta Corp (TAC)
Arcutis Biotherapeutics (ARQT)
Fluor Corporation (FLR)
Mercury General Corporation (MCY)
Bgc Group Cl A (BGC)
Kiniksa Pharmaceuticals Intl Ord Shs Cl A (KNSA)
Viatris (VTRS)
Quidel Corp (QDEL)

View all positions for Rubric Capital Management

Top funds holding Prothena

FMR
BlackRock
Vanguard Group
Armistice Capital
Rubric Capital Management
ADAR1 Capital Management
Palo Alto Investors
D. E. Shaw & Co
Susquehanna International
Acadian Asset Management
Geode Capital Management
Citadel Advisors
Morgan Stanley
State Street Corporation
Jane Street

View all funds holding Prothena