Biogen 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 BIIB34?
Owner TypeNumber of SharesOwnership Percentage
State or Government140,3680.0963%
Individual Insiders349,2210.24%
General Public13,679,5779.39%
Institutions131,550,17490.3%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.


Top Shareholders

Top 25 shareholders own 65.08% of the company
OwnershipNameSharesCurrent ValueChange %Portfolio %
11.4%
The Vanguard Group, Inc.
16,678,507R$15.6b0.47%0.04%
11.2%
PRIMECAP Management Company
16,315,079R$15.3b-0.14%1.81%
10.5%
BlackRock, Inc.
15,347,041R$14.4b5.56%0.04%
5.04%
State Street Global Advisors, Inc.
7,344,960R$6.9b3.51%0.04%
4.23%
T. Rowe Price Group, Inc.
6,168,832R$5.8b-19.8%0.08%
3.52%
Wellington Management Group LLP
5,131,193R$4.8b-0.68%0.12%
2.48%
Geode Capital Management, LLC
3,613,020R$3.4b1.32%0.04%
2.42%
JP Morgan Asset Management
3,524,314R$3.3b6.09%0.06%
1.43%
Norges Bank Investment Management
2,078,745R$1.9b0%0.03%
1.2%
Beutel Goodman & Company Ltd.
1,744,154R$1.6b-0.19%1.2%
1.14%
UBS Asset Management AG
1,656,544R$1.6b4.43%0.03%
1.04%
Legal & General Investment Management Limited
1,511,506R$1.4b-2.41%0.04%
0.97%
Invesco Capital Management LLC
1,413,892R$1.3b29.8%0.08%
0.93%
Northern Trust Global Investments
1,353,135R$1.3b-5.1%0.03%
0.91%
Morgan Stanley, Investment Banking and Brokerage Investments
1,323,321R$1.2b33.3%0.02%
0.81%
RA Capital Management, L.P.
1,184,456R$1.1b20.6%2.24%
0.79%
Columbia Management Investment Advisers, LLC
1,150,486R$1.1b-20.7%0.04%
0.76%
Dimensional Fund Advisors LP
1,114,340R$1.0b0.38%0.03%
0.67%
BNY Asset Management
982,172R$919.2m-19.5%0.03%
0.65%
Renaissance Technologies LLC
952,706R$891.6m54.1%0.21%
0.63%
Charles Schwab Investment Management, Inc.
913,029R$854.5m1.37%0.02%
0.62%
JPMorgan Chase & Co, Private Banking and Investment Banking Investments
903,148R$845.2m4.71%0.03%
0.62%
Amundi Asset Management SAS
902,664R$844.7m31.4%0.03%
0.56%
OrbiMed Advisors LLC
813,000R$760.8m-9.76%1.75%
0.49%
Massachusetts Financial Services Company
711,184R$665.6m29.6%0.02%