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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: 1,0391,009 (-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: 1511 (-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
Name Holding Trade Value Shares
Change
Change in
Stake
Primecap Management
1
Primecap Management
California
$3.78B -$129M -501,510 -3%
BlackRock
2
BlackRock
New York
$3.29B -$44.8M -174,299 -1%
Vanguard Group
3
Vanguard Group
Pennsylvania
$2.77B -$39.7M -154,577 -1%
State Street
4
State Street
Massachusetts
$1.68B +$27.8M +107,970 +2%
Wellington Management Group
5
Wellington Management Group
Massachusetts
$1.48B +$156M +606,735 +11%
JP Morgan Chase
6
JP Morgan Chase
New York
$1.09B -$275M -1,068,817 -19%
Geode Capital Management
7
Geode Capital Management
Massachusetts
$657M -$7.7M -29,935 -1%
ClearBridge Investments
8
ClearBridge Investments
New York
$605M -$216M -840,525 -25%
Northern Trust
9
Northern Trust
Illinois
$406M -$17.2M -66,768 -4%
Deutsche Bank
10
Deutsche Bank
Germany
$376M +$47.5M +184,738 +13%
Norges Bank
11
Norges Bank
Norway
$373M -$17.2M -66,806 -4%
Bank of New York Mellon
12
Bank of New York Mellon
New York
$352M -$37.2M -144,492 -9%
Legal & General Group
13
Legal & General Group
United Kingdom
$326M -$12.4M -48,116 -3%
Dimensional Fund Advisors
14
Dimensional Fund Advisors
Texas
$286M +$16M +62,060 +5%
UBS AM
15
UBS AM
Illinois
$278M -$22M -85,684 -7%
T. Rowe Price Associates
16
T. Rowe Price Associates
Maryland
$271M -$168M -652,779 -37%
Invesco
17
Invesco
Georgia
$271M +$36.1M +140,484 +14%
Renaissance Technologies
18
Renaissance Technologies
New York
$258M +$23.7M +92,100 +9%
Arrowstreet Capital
19
Arrowstreet Capital
Massachusetts
$232M +$178M +691,743 +252%
Goldman Sachs
20
Goldman Sachs
New York
$228M +$38.4M +149,312 +19%
BGC
21
Beutel, Goodman & Co
Ontario, Canada
$219M +$93.5M +363,520 +66%
Bank of America
22
Bank of America
North Carolina
$219M +$43.2M +168,052 +23%
SAM
23
Southeastern Asset Management
Tennessee
$206M +$221M +858,523 New
American Century Companies
24
American Century Companies
Missouri
$205M -$72.8M -283,047 -25%
Barclays
25
Barclays
United Kingdom
$196M +$111M +431,657 +112%

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.