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Biogen
BIIB

1,009 hedge funds and large institutions have $29.6B invested in Biogen in 2021 Q4 according to their latest regulatory filings, with 144 funds opening new positions, 295 increasing their positions, 395 reducing their positions, and 153 closing their positions.

New
Increased
Maintained
Reduced
Closed

1.2% more ownership

Funds ownership: 83.05% → 84.25% (+1.2%)

6% less first-time investments, than exits

New positions opened: 144 | Existing positions closed: 153

3% less funds holding

Funds holding: 1,039 → 1,009 (-30)

15% less capital invested

Capital invested by funds: $35B → $29.6B (-$5.39B)

25% less repeat investments, than reductions

Existing positions increased: 295 | Existing positions reduced: 395

27% less funds holding in top 10

Funds holding in top 10: 15 → 11 (-4)

28% less call options, than puts

Call options by funds: $1.1B | Put options by funds: $1.52B

Holders
1,009
Holders Change
-30
Holders Change %
-2.89%
% of All Funds
15.53%
Holding in Top 10
11
Holding in Top 10 Change
-4
Holding in Top 10 Change %
-26.67%
% of All Funds
0.17%
New
144
Increased
295
Reduced
395
Closed
153
Calls
$1.1B
Puts
$1.52B
Net Calls
-$420M
Net Calls Change
+$46.5M

Top Buyers

Rank Fund Capital Flow
1
SAM
Southeastern Asset Management
Tennessee
+$221M
2
Arrowstreet Capital
Arrowstreet Capital
Massachusetts
+$178M
3
Wellington Management Group
Wellington Management Group
Massachusetts
+$156M
4
Point72 Asset Management
Point72 Asset Management
Connecticut
+$149M
5
Barclays
Barclays
United Kingdom
+$111M

Top Sellers

Rank Fund Capital Flow
1
JP Morgan Chase
JP Morgan Chase
New York
-$275M
2
Fidelity Investments
Fidelity Investments
Massachusetts
-$255M
3
ClearBridge Investments
ClearBridge Investments
New York
-$216M
4
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
-$168M
5
Primecap Management
Primecap Management
California
-$129M
Name Holding Trade Value Shares
Change 		Change in
Stake
HNWAG
976
High Net Worth Advisory Group
Florida
$4K +$3.86K +15 New
PP
977
Pacifica Partners
Canada
$4K +$3.86K +15 New
MGIM
978
M&G Investment Management
United Kingdom
$3.12K -$19M -73,893 -85%
ATC
979
Adirondack Trust Company
New York
$3K – – –
FCA
980
FinTrust Capital Advisors
South Carolina
$3K – – –
Kayne Anderson Rudnick Investment Management
981
Kayne Anderson Rudnick Investment Management
California
$3K +$1.03K +4 +57%
NIC
982
Northwest Investment Counselors
Oregon
$3K +$2.83K +11 New
SFO
983
Standard Family Office
South Dakota
$3K +$2.83K +11 New
WFS
984
Widmann Financial Services
Maryland
$3K +$4.11K +16 New
HVM
985
Harvest Volatility Management
Connecticut
$2.15K +$535K +2,079 +30%
1832 Asset Management
986
1832 Asset Management
Ontario, Canada
$2K -$278K -1,082 -99%
APC
987
Aspire Private Capital
North Carolina
$2K – – –
MWM
988
Mascoma Wealth Management
New Hampshire
$2K – – –
PFSC
989
Peoples Financial Services Corp
Pennsylvania
$2K – – –
RAM
990
Riggs Asset Management
Pennsylvania
$2K – – –
SFM
991
Signet Financial Management
New Jersey
$2K +$1.8K +7 New
CAC
992
Core Alternative Capital
Georgia
$2K +$2.31K +9 New
SC
993
Schubert & Co
Texas
$2K +$2.57K +10 New
FP
994
Financial Perspectives
Minnesota
$1.92K – – –
BBHC
995
Brown Brothers Harriman & Co
New York
$1.29K -$136K -529 -9%
FGAM
996
Financial Gravity Asset Management
Texas
$1.27K +$924K +3,595 +71,900%
VRS
997
Virginia Retirement Systems
Virginia
$1.1K – – –
HIIFS
998
Harel Insurance Investments & Financial Services
Israel
$1K -$42.2K -164 -98%
EWM
999
Edge Wealth Management
New York
$1K – – –
RIM
1000
Rockbridge Investment Management
New York
$1K – – –
38 39
40
41 42

BIIB Hedge Fund Activity: Q4 2021 in Review

1,009 of the 6,498 institutional investors tracked by Wall St. Rank reported a position in Biogen (BIIB) for Q4 2021, worth a combined $29.6B — down 15% from $35B a quarter earlier.

Sellers outnumbered buyers: 153 funds closed out of BIIB and 144 opened new positions — a net loss of 9 holders — while 395 trimmed existing stakes and 295 added.

The largest buyer was Southeastern Asset Management, opening a new position worth an estimated $221M. The largest seller was JP Morgan Chase, cutting an estimated $275M.

  • 1,009 institutional investors held Biogen (BIIB) as of Q4 2021, down from 1,039 in Q3 2021.
  • Funds reported $29.6B of Biogen stock for Q4 2021, down 15% quarter-over-quarter.
  • 144 funds opened new Biogen positions in Q4 2021 and 153 closed out, a net change of -9 holders.
  • The largest Biogen buyer in Q4 2021 was Southeastern Asset Management, an estimated $221M added.
  • The largest Biogen seller in Q4 2021 was JP Morgan Chase, an estimated $275M sold.

Based on aggregated 13F filings for Q4 2021.