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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
PAG
401
Private Advisor Group
New Jersey
$2.7M +$31.5K +104 +1%
LWCFA
402
Loring Wolcott & Coolidge Fiduciary Advisors
Massachusetts
$2.68M -$142K -468 -6%
HI
403
Hendershot Investments
Virginia
$2.67M -$161K -530 -6%
PAM
404
Paradigm Asset Management
New York
$2.63M – – –
CFD
405
Creative Financial Designs
Indiana
$2.61M +$321K +1,061 +16%
CT
406
Chicago Trust
Illinois
$2.6M +$559K +1,845 +33%
TCM
407
Teza Capital Management
Illinois
$2.57M +$2.25M +7,417 New
MCC
408
Malaga Cove Capital
California
$2.54M +$39.7K +131 +2%
P
409
Pitcairn
Pennsylvania
$2.51M -$335K -1,107 -13%
CIG
410
Cairn Investment Group
Washington
$2.47M +$53K +175 +3%
LS
411
Leelyn Smith
Illinois
$2.47M -$132K -436 -6%
CSPAM
412
Cary Street Partners Asset Management
Virginia
$2.44M -$6.75M -22,275 -76%
Capstone Investment Advisors
413
Capstone Investment Advisors
New York
$2.41M +$2.11M +6,966 New
SAM
414
Shell Asset Management
Netherlands
$2.41M -$1.64M -5,408 -44%
OC
415
Oppenheimer & Co
New York
$2.38M -$1.37M -4,524 -40%
DY
416
Dowling & Yahnke
California
$2.37M -$15.4K -51 -0.7%
NMIMC
417
Northwestern Mutual Investment Management Company
Wisconsin
$2.37M -$20.9K -69 -1%
PSUF
418
People's United Financial
Connecticut
$2.37M +$17K +56 +0.8%
HNW
419
High Note Wealth
Minnesota
$2.34M -$20.9K -69 -1%
TRCT
420
Tower Research Capital (TRC)
New York
$2.33M -$3.99M -13,174 -66%
RC
421
RegentAtlantic Capital
New Jersey
$2.31M -$90.9K -300 -4%
SDIC
422
South Dakota Investment Council
South Dakota
$2.3M -$164K -540 -8%
CYG
423
Clean Yield Group
Vermont
$2.29M -$2.01M -6,651 -50%
FAN
424
Financial Advisors Network
California
$2.28M -$78.5K -259 -4%
MJRIC
425
Mogy Joel R Investment Counsel
California
$2.25M – – –
15 16
17
18 19

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.