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Prothena shares owned by Janney Montgomery Scott

Quarter-by-quarter ownership of Prothena (PRTA) shares owned by Janney Montgomery Scott from 13F filings

Historical chart of Janney Montgomery Scott investment in Prothena

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All positions including Prothena held by Janney Montgomery Scott consolidated in one spreadsheet with up to 7 years of data

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Quarterly reported holdings in Prothena by Janney Montgomery Scott

Quarter filed Position value Share count Share price at filing
2025-09-30 $1.0M 107k 9.76

More positions owned by Janney Montgomery Scott

Apple Common Stock (AAPL)
Microsoft Corp Common Stock (MSFT)
Nvidia Corp Common Stock (NVDA)
Ishs Core Sp 500 Etf ETF/Closed End (IVV)
Tech Sel Sect Spdr Etf ETF/Closed End (XLK)
Amazoncom Common Stock (AMZN)
Broadcom Common Stock (AVGO)
Inv Qqq Etf ETF/Closed End (QQQ)
Jpmorgan Chase Common Stock (JPM)
Alphabet Inc A Common Stock (GOOGL)
Spdr Sp 500 Etf ETF/Closed End (SPY)
Comm Svcs Sel Spdr Etf ETF/Closed End (XLC)
Jpm Betabldrs U S Eq Etf ETF/Closed End (BBUS)
Finl Sel Sect Spdr Etf ETF/Closed End (XLF)
Hlthcr Sel Sect Spdr Etf ETF/Closed End (XLV)

View all positions for Janney Montgomery Scott

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