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Biogen
BIIB

1,104 hedge funds and large institutions have $43.5B invested in Biogen in 2021 Q2 according to their latest regulatory filings, with 136 funds opening new positions, 324 increasing their positions, 468 reducing their positions, and 110 closing their positions.

New
Increased
Maintained
Reduced
Closed

108% more funds holding in top 10

Funds holding in top 10: 13 → 27 (+14)

24% more first-time investments, than exits

New positions opened: 136 | Existing positions closed: 110

22% more capital invested

Capital invested by funds: $35.7B → $43.5B (+$7.81B)

1% more funds holding

Funds holding: 1,093 → 1,104 (+11)

0.17% less ownership

Funds ownership: 83.93% → 83.76% (-0.17%)

6% less call options, than puts

Call options by funds: $1.8B | Put options by funds: $1.91B

31% less repeat investments, than reductions

Existing positions increased: 324 | Existing positions reduced: 468

Holders
1,104
Holders Change
+11
Holders Change %
+1.01%
% of All Funds
19.22%
Holding in Top 10
27
Holding in Top 10 Change
+14
Holding in Top 10 Change %
+107.69%
% of All Funds
0.47%
New
136
Increased
324
Reduced
468
Closed
110
Calls
$1.8B
Puts
$1.91B
Net Calls
-$111M
Net Calls Change
-$185M

Top Buyers

1
JP Morgan Chase
JP Morgan Chase
New York
+$445M
2
Marshall Wace
Marshall Wace
United Kingdom
+$148M
3
SC
Samlyn Capital
New York
+$114M
4
Citadel Advisors
Citadel Advisors
Florida
+$101M
5
HM
HealthCor Management
New York
+$78.4M

Top Sellers

1
Renaissance Technologies
Renaissance Technologies
New York
-$184M
2
Berkshire Hathaway
Berkshire Hathaway
Nebraska
-$180M
3
Fidelity Investments
Fidelity Investments
Massachusetts
-$171M
4
LSV Asset Management
LSV Asset Management
Illinois
-$169M
5
SAM
Southeastern Asset Management
Tennessee
-$169M
Name Holding Trade Value Shares
Change 		Change in
Stake
BWL
1076
Bogart Wealth LLC
Virginia
$5K -$303 -1 -6%
ATC
1077
Adirondack Trust Company
New York
$5K – – –
FCA
1078
FinTrust Capital Advisors
South Carolina
$5K – – –
LIM
1079
Longfellow Investment Management
Massachusetts
$5K +$909 +3 +30%
EWM
1080
Elmwood Wealth Management
California
$5K +$4.54K +15 New
SFO
1081
Standard Family Office
South Dakota
$4K – – –
TLFA
1082
True Link Financial Advisors
California
$4K +$3.33K +11 New
MF
1083
Magnetar Financial
Illinois
$3.71K +$1.01M +3,342 +45%
APC
1084
Aspire Private Capital
North Carolina
$3K -$16.1K -53 -87%
AWM
1085
Avior Wealth Management
Nebraska
$3K – – –
FI
1086
FormulaFolio Investments
Michigan
$3K – – –
PFSC
1087
Peoples Financial Services Corp
Pennsylvania
$3K – – –
RAM
1088
Riggs Asset Management
Pennsylvania
$3K – – –
LF
1089
Lee Financial
Texas
$3K +$2.42K +8 New
FP
1090
Financial Perspectives
Minnesota
$2.77K -$676K -2,230 -100%
BBHC
1091
Brown Brothers Harriman & Co
New York
$2.04K -$126K -417 -7%
Lazard Asset Management
1092
Lazard Asset Management
New York
$2K -$17.3K -57 -88%
BMD
1093
Better Money Decisions
New Mexico
$2K – – –
Kayne Anderson Rudnick Investment Management
1094
Kayne Anderson Rudnick Investment Management
California
$2K – – –
SWG
1095
Summit Wealth Group
Vermont
$2K – – –
TFGT
1096
TS Financial Group (TSFG)
Illinois
$2K – – –
SB
1097
Strategic Blueprint
Georgia
$2K +$1.51K +5 New
FFG
1098
Ford Financial Group
California
$2K +$2.42K +8 New
RCG
1099
Rock Creek Group
District of Columbia
$1K -$2.12K -7 -70%
MAM
1100
McCarthy Asset Management
California
$1K – – –
42 43
44
45 46

BIIB Hedge Fund Activity: Q2 2021 in Review

1,104 of the 5,745 institutional investors tracked by Wall St. Rank reported a position in Biogen (BIIB) for Q2 2021, worth a combined $43.5B — up 22% from $35.7B a quarter earlier.

Buyers outnumbered sellers: 136 funds opened new BIIB positions and 110 closed out — a net gain of 26 holders — while 324 added to existing stakes and 468 trimmed.

The largest buyer was JP Morgan Chase, adding an estimated $445M. The largest seller was Renaissance Technologies, cutting an estimated $184M.

  • 1,104 institutional investors held Biogen (BIIB) as of Q2 2021, up from 1,093 in Q1 2021.
  • Funds reported $43.5B of Biogen stock for Q2 2021, up 22% quarter-over-quarter.
  • 136 funds opened new Biogen positions in Q2 2021 and 110 closed out, a net change of +26 holders.
  • The largest Biogen buyer in Q2 2021 was JP Morgan Chase, an estimated $445M added.
  • The largest Biogen seller in Q2 2021 was Renaissance Technologies, an estimated $184M sold.

Based on aggregated 13F filings for Q2 2021.