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Biogen
BIIB

1,008 hedge funds and large institutions have $36.1B invested in Biogen in 2023 Q2 according to their latest regulatory filings, with 97 funds opening new positions, 321 increasing their positions, 363 reducing their positions, and 84 closing their positions.

New
Increased
Maintained
Reduced
Closed

15% more first-time investments, than exits

New positions opened: 97 | Existing positions closed: 84

3% more capital invested

Capital invested by funds: $35B → $36.1B (+$1.14B)

1% more funds holding

Funds holding: 1,001 → 1,008 (+7)

0.92% less ownership

Funds ownership: 88.51% → 87.59% (-0.92%)

7% less call options, than puts

Call options by funds: $555M | Put options by funds: $599M

5% less funds holding in top 10

Funds holding in top 10: 19 → 18 (-1)

12% less repeat investments, than reductions

Existing positions increased: 321 | Existing positions reduced: 363

Holders
1,008
Holders Change
+7
Holders Change %
+0.7%
% of All Funds
15.83%
Holding in Top 10
18
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-5.26%
% of All Funds
0.28%
New
97
Increased
321
Reduced
363
Closed
84
Calls
$555M
Puts
$599M
Net Calls
-$44.6M
Net Calls Change
-$119M

Top Buyers

Rank Fund Capital Flow
1
T. Rowe Price Investment Management
T. Rowe Price Investment Management
Maryland
+$1.01B
2
Fidelity Investments
Fidelity Investments
Massachusetts
+$264M
3
Amundi
Amundi
France
+$181M
4
Alyeska Investment Group
Alyeska Investment Group
Illinois
+$109M
5
JP Morgan Chase
JP Morgan Chase
New York
+$108M

Top Sellers

Rank Fund Capital Flow
1
Envestnet Asset Management
Envestnet Asset Management
Illinois
-$668M
2
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
-$286M
3
Marshall Wace
Marshall Wace
United Kingdom
-$157M
4
D.E. Shaw & Co
D.E. Shaw & Co
New York
-$145M
5
Millennium Management
Millennium Management
New York
-$140M
Name Holding Trade Value Shares
Change 		Change in
Stake
Loomis, Sayles & Company
976
Loomis, Sayles & Company
Massachusetts
$3K -$2.68K -9 -45%
HBW
977
Hazlett, Burt & Watson
West Virginia
$3K – – –
TFGT
978
TS Financial Group (TSFG)
Illinois
$3K +$595 +2 +29%
DAC
979
Dividend Assets Capital
South Carolina
$3K +$3.27K +11 New
EBA
980
Eagle Bay Advisors
New York
$2.56K -$45.2K -152 -94%
PPC
981
Park Place Capital
Alabama
$2.56K -$3.57K -12 -57%
ETC
982
Exchange Traded Concepts
Oklahoma
$2.28K -$298 -1 -11%
APC
983
Aspire Private Capital
North Carolina
$2.28K – – –
FP
984
Financial Perspectives
Minnesota
$2.28K – – –
LF
985
Lee Financial
Texas
$2.28K – – –
RCG
986
Rock Creek Group
District of Columbia
$2.28K +$2.38K +8 New
ARS
987
Adirondack Retirement Specialists
New York
$1.99K – – –
CIA
988
Cape Investment Advisory
Georgia
$1.99K – – –
CCP
989
Carmel Capital Partners
California
$1.99K – – –
FGAM
990
Financial Gravity Asset Management
Texas
$1.86K +$2.08K +7 +3%
TFM
991
TFC Financial Management
Massachusetts
$1.71K – – –
IPW
992
Impact Partnership Wealth
Georgia
$1.71K +$1.79K +6 New
AAP
993
Arax Advisory Partners
Colorado
$1.43K – – –
EWM
994
Evermay Wealth Management
Virginia
$1.43K – – –
TWD
995
True Wealth Design
Ohio
$1.14K -$1.19K -4 -50%
TF
996
TimeScale Financial
Massachusetts
$1.14K -$29.8K -100 -96%
CTA
997
Colonial Trust Advisors
South Carolina
$1.14K – – –
TCCM
998
Timber Creek Capital Management
Massachusetts
$1.14K +$1.19K +4 New
PP
999
PrairieView Partners
Minnesota
$1K – – –
TFA
1000
Transamerica Financial Advisors
Florida
$1K – – –
38 39
40
41 42

BIIB Hedge Fund Activity: Q2 2023 in Review

1,008 of the 6,369 institutional investors tracked by Wall St. Rank reported a position in Biogen (BIIB) for Q2 2023, worth a combined $36.1B — up 3.2% from $35B a quarter earlier.

Buyers outnumbered sellers: 97 funds opened new BIIB positions and 84 closed out — a net gain of 13 holders — while 321 added to existing stakes and 363 trimmed.

The largest buyer was T. Rowe Price Investment Management, opening a new position worth an estimated $1.01B. The largest seller was Envestnet Asset Management, cutting an estimated $668M.

  • 1,008 institutional investors held Biogen (BIIB) as of Q2 2023, up from 1,001 in Q1 2023.
  • Funds reported $36.1B of Biogen stock for Q2 2023, up 3.2% quarter-over-quarter.
  • 97 funds opened new Biogen positions in Q2 2023 and 84 closed out, a net change of +13 holders.
  • The largest Biogen buyer in Q2 2023 was T. Rowe Price Investment Management, an estimated $1.01B added.
  • The largest Biogen seller in Q2 2023 was Envestnet Asset Management, an estimated $668M sold.

Based on aggregated 13F filings for Q2 2023.