Prothena Ownership

Who are the major shareholders and have insiders been buying or selling?


Recent Insider Transactions

Insider Trading Volume

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.


Ownership Breakdown

What is the ownership structure of 0Y3M?
Owner TypeNumber of SharesOwnership Percentage
Individual Insiders2,484,6634.5%
Hedge Funds11,584,28021.2%
Institutions40,562,93674.2%

Dilution of Shares: Shareholders have been diluted in the past year, with total shares outstanding growing by 12.7%.


Top Shareholders

Top 25 shareholders own 89.3% of the company
OwnershipNameSharesCurrent ValueChange %Portfolio %
21.96%
EcoR1 Capital, LLC
11,584,280$838.0m0%23.43%
12.82%
FMR LLC
6,762,010$489.2m71.31%0.04%
7.8%
T. Rowe Price Group, Inc.
4,116,976$297.8m-0.41%0.03%
6.87%
BlackRock, Inc.
3,624,627$262.2m4%0.01%
4.67%
William Scully
2,463,000$178.2m0%no data
4.3%
Wellington Management Group LLP
2,266,078$163.9m28.4%0.03%
3.99%
State Street Global Advisors, Inc.
2,102,458$152.1m2.46%0.01%
3.15%
Palo Alto Investors LP
1,663,777$120.4m0.31%10.12%
3.03%
Janus Henderson Group plc
1,596,303$115.5m11.45%0.06%
2.86%
First Light Asset Management, LLC
1,511,168$109.3m-1.59%9.96%
2.34%
Dimensional Fund Advisors LP
1,232,635$89.2m-6.65%0.02%
2.02%
Avidity Partners Management, L.P.
1,068,200$77.3m-63.83%2.44%
1.79%
The Vanguard Group, Inc.
944,556$68.3m8.55%no data
1.48%
Geode Capital Management, LLC
779,824$56.4m8.97%0.01%
1.47%
PFM Health Sciences, LP
774,546$56.0m-11.53%2.59%
1.43%
Rock Springs Capital Management LP
753,462$54.5m0%1.27%
1.06%
Bank of America Corporation, Asset Management Arm
559,559$40.5m533.67%0.02%
0.96%
Teachers Insurance and Annuity Association-College Retirement Equities Fund
506,728$36.7m-11.53%0.01%
0.85%
Prosight Management, LP
447,092$32.3m35.48%13.33%
0.83%
Eventide Asset Management, LLC
438,732$31.7m0%0.59%
0.77%
Renaissance Technologies LLC
407,300$29.5m-14.23%0.04%
0.73%
Northern Trust Global Investments
382,688$27.7m5.84%0.01%
0.72%
Two Sigma Advisers, LP
381,300$27.6m16.61%0.08%
0.71%
Point72 Asset Management, L.P.
376,648$27.2m6.7%0.07%
0.69%
Two Sigma Investments, LP
365,539$26.4m79.68%0.09%