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966 hedge funds and large institutions have $90B invested in Biogen in 2015 Q1 according to their latest regulatory filings, with 133 funds opening new positions, 336 increasing their positions, 371 reducing their positions, and 42 closing their positions.

New
Increased
Maintained
Reduced
Closed

217% more first-time investments, than exits

New positions opened: 133 | Existing positions closed: 42

31% more funds holding in top 10

Funds holding in top 10: 5268 (+16)

25% more capital invested

Capital invested by funds: $72.3B → $90B (+$17.7B)

9% more funds holding

Funds holding: 884966 (+82)

9% less repeat investments, than reductions

Existing positions increased: 336 | Existing positions reduced: 371

35% less call options, than puts

Call options by funds: $1.06B | Put options by funds: $1.64B

Holders
966
Holders Change
+82
Holders Change %
+9.28%
% of All Funds
25.74%
Holding in Top 10
68
Holding in Top 10 Change
+16
Holding in Top 10 Change %
+30.77%
% of All Funds
1.81%
New
133
Increased
336
Reduced
371
Closed
42
Calls
$1.06B
Puts
$1.64B
Net Calls
-$582M
Net Calls Change
-$200M
Name Holding Trade Value Shares
Change
Change in
Stake
EAM
276
EULAV Asset Management
Florida
$13.5M
N
277
Natixis
France
$13.2M +$12.3M +31,323 New
BPC
278
Banque Pictet & Cie
Switzerland
$13.2M +$245K +622 +2%
TAM
279
Tocqueville Asset Management
New York
$13.2M +$2.75M +6,988 +29%
CB
280
Commerce Bank
Missouri
$13.1M -$2.37K -6 -0%
Renaissance Technologies
281
Renaissance Technologies
New York
$12.8M -$13.7M -34,861 -53%
MSA
282
Mason Street Advisors
Wisconsin
$12.8M -$37.4M -95,006 -76%
PMAM
283
Picton Mahoney Asset Management
Ontario, Canada
$12.6M +$11.7M +29,800 New
MCM
284
Mitchell Capital Management
Kansas
$12.5M -$3.56M -9,025 -23%
ARTA
285
A.R.T. Advisors
New York
$12.4M +$11.6M +29,427 New
MOACM
286
Mutual of America Capital Management
New York
$12.3M -$371K -942 -3%
AL
287
Airain Ltd
Guernsey
$12.1M +$1.06M +2,696 +10%
QI
288
Quotient Investors
New York
$12.1M +$5.16M +13,100 +84%
BA
289
Boston Advisors
Massachusetts
$12M +$579K +1,470 +5%
OAM
290
Oxford Asset Management
United Kingdom
$11.8M +$4.62M +11,727 +72%
FLPIM
291
F.L. Putnam Investment Management
Massachusetts
$11.7M +$1.4M +3,556 +15%
NMERB
292
New Mexico Educational Retirement Board
New Mexico
$11.6M -$473K -1,200 -4%
CIBC Asset Management
293
CIBC Asset Management
Ontario, Canada
$11.6M +$709K +1,798 +7%
ZA
294
Zweig Advisers
Connecticut
$11.5M -$1.38M -3,500 -11%
RIM
295
RS Investment Management
California
$11.5M +$10.2M +25,979 +2,133%
COPPSERS
296
Commonwealth of Pennsylvania Public School Employees Retirement System
Pennsylvania
$11.4M -$6.37M -16,174 -38%
Balyasny Asset Management
297
Balyasny Asset Management
Illinois
$11.4M -$9.26M -23,483 -47%
WAM
298
World Asset Management
Michigan
$11.3M -$141K -358 -1%
CC
299
Curian Capital
Colorado
$11.1M -$2.23M -5,658 -18%
William Blair & Company
300
William Blair & Company
Illinois
$11M +$3.49M +8,849 +52%

BIIB Hedge Fund Activity: Q1 2015 in Review

966 of the 3,753 institutional investors tracked by Wall St. Rank reported a position in Biogen (BIIB) for Q1 2015, worth a combined $90B — up 25% from $72.3B a quarter earlier.

Buyers outnumbered sellers: 133 funds opened new BIIB positions and 42 closed out — a net gain of 91 holders — while 336 added to existing stakes and 371 trimmed.

The largest buyer was Fidelity Investments, adding an estimated $888M. The largest seller was T. Rowe Price Associates, cutting an estimated $546M.

  • 966 institutional investors held Biogen (BIIB) as of Q1 2015, up from 884 in Q4 2014.
  • Funds reported $90B of Biogen stock for Q1 2015, up 25% quarter-over-quarter.
  • 133 funds opened new Biogen positions in Q1 2015 and 42 closed out, a net change of +91 holders.
  • The largest Biogen buyer in Q1 2015 was Fidelity Investments, an estimated $888M added.
  • The largest Biogen seller in Q1 2015 was T. Rowe Price Associates, an estimated $546M sold.

Based on aggregated 13F filings for Q1 2015.