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Prothena Corporation plc (PRTA)

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12.79 -1.02 (-7.39%)
At close: December 13 at 4:00:01 PM EST
12.97 +0.18 (+1.41%)
After hours: December 13 at 7:21:38 PM EST

Major Holders

Breakdown
13.46% % of Shares Held by All Insider
96.97% % of Shares Held by Institutions
112.05% % of Float Held by Institutions
246 Number of Institutions Holding Shares

Top Institutional Holders

HolderSharesDate Reported% OutValue
EcoR1 Capital, LLC 11.58M Sep 30, 2024 21.53% 148,162,940
FMR, LLC 8.07M Sep 30, 2024 14.99% 103,176,712
Wellington Management Group, LLP 4.18M Sep 30, 2024 7.77% 53,446,698
Blackrock Inc. 4.03M Sep 30, 2024 7.49% 51,523,069
Price (T.Rowe) Associates Inc 3.82M Sep 30, 2024 7.10% 48,888,930
Palo Alto Investors Lp 1.74M Sep 30, 2024 3.23% 22,228,559
State Street Corporation 1.67M Sep 30, 2024 3.11% 21,422,086
Armistice Capital, LLC 1.65M Sep 30, 2024 3.07% 21,103,499
Vanguard Group Inc 1.26M Sep 30, 2024 2.34% 16,103,901
Siren, L.L.C. 1.1M Sep 30, 2024 2.04% 14,066,953

Top Mutual Fund Holders

HolderSharesDate Reported% OutValue
Vanguard Specialized-Health Care Fund 3.01M Jul 31, 2024 5.59% 38,467,242
Fidelity Growth Company Fund 2.36M Oct 31, 2024 4.38% 30,123,992
Price (T.Rowe) New Horizons Fund 1.89M Sep 30, 2024 3.52% 24,193,909
iShares Russell 2000 ETF 1.1M Sep 30, 2024 2.04% 14,042,818
Fidelity Growth Company K6 Fund 816.39k Oct 31, 2024 1.52% 10,441,628
Fidelity Series Growth Company Fund 758.61k Oct 31, 2024 1.41% 9,702,557
Fidelity Select Portfolios - Biotechnology 738.12k Oct 31, 2024 1.37% 9,440,516
SPDR (R) Ser Tr-SPDR (R) S&P (R) Biotech ETF 715.34k Sep 30, 2024 1.33% 9,149,172
Vanguard Extended Market Index Fund 551.67k Sep 30, 2024 1.03% 7,055,884
Price (T.Rowe) Health Sciences Fund 525.01k Sep 30, 2024 0.98% 6,714,839

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