Prothena Corp Public Ltd Co Stock Ownership - Who owns Prothena Public Co?

Insider buying vs selling

Have Prothena Corp Public Ltd Co insiders been buying or selling?
Karin L. WalkerChief Accounting Officer2023-11-305,000$13.53
Karin L. WalkerChief Accounting Officer2023-11-305,000$34.00
Karin L. WalkerChief Accounting Officer2023-10-255,000$13.53
Karin L. WalkerChief Accounting Officer2023-10-25294$42.28
Karin L. WalkerChief Accounting Officer2023-10-252,917$41.38
Karin L. WalkerChief Accounting Officer2023-10-251,789$40.27
Brandon S. SmithChief Operating Officer2023-10-11444$47.74
Brandon S. SmithChief Operating Officer2023-10-114,000$11.12
Brandon S. SmithChief Operating Officer2023-10-113,556$46.62
Carol D. KarpChief Regulatory Officer2023-10-04663$47.29

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Net Insider Buy/Sell (L12M) Ownership

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PRTA Shareholders

What type of owners hold Prothena Corp Public Ltd Co stock?
Ecor1 Capital LLC64.76%34,752,840$1.25BInsider
Ecor1 Capital LLC21.59%11,584,280$417.96MInstitution
Oleg Nodelman17.57%9,426,640$340.11MInsider
Fmr LLC14.96%8,030,290$289.73MInstitution
Price T Rowe Associates Inc7.12%3,820,013$137.83MInstitution
Blackrock Inc6.60%3,541,244$127.77MInstitution
Elan Corp PLC5.93%3,182,253$114.82MInsider
Wellington Management Group LLP3.99%2,141,647$77.27MInstitution
State Street Corp3.93%2,110,233$76.14MInstitution
Janus Henderson Group PLC3.40%1,826,609$65.90MInstitution

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PRTA vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
PRTA52.72%47.28%Net BuyingNet Buying
NMRA23.77%65.44%Net BuyingNet Buying
SWTX61.86%38.14%Net Selling
IDYA88.86%11.14%Net BuyingNet Buying
PTCT85.48%14.52%Net Selling

Prothena Public Co Stock Ownership FAQ

Who owns Prothena Public Co?

Prothena Public Co (NASDAQ: PRTA) is owned by 98.49% institutional shareholders, 88.33% Prothena Public Co insiders, and 0.00% retail investors. Ecor1 Capital LLC is the largest individual Prothena Public Co shareholder, owning 34.75M shares representing 64.76% of the company. Ecor1 Capital LLC's Prothena Public Co shares are currently valued at $1.25B.

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