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739 hedge funds and large institutions have $61B invested in Biogen in 2013 Q4 according to their latest regulatory filings, with 122 funds opening new positions, 245 increasing their positions, 266 reducing their positions, and 30 closing their positions.

New
Increased
Maintained
Reduced
Closed

307% more first-time investments, than exits

New positions opened: 122 | Existing positions closed: 30

54% more funds holding in top 10

Funds holding in top 10: 2437 (+13)

18% more call options, than puts

Call options by funds: $913M | Put options by funds: $771M

15% more capital invested

Capital invested by funds: $53B → $61B (+$8B)

13% more funds holding

Funds holding: 656739 (+83)

8% less repeat investments, than reductions

Existing positions increased: 245 | Existing positions reduced: 266

Holders
739
Holders Change
+83
Holders Change %
+12.65%
% of All Funds
21.36%
Holding in Top 10
37
Holding in Top 10 Change
+13
Holding in Top 10 Change %
+54.17%
% of All Funds
1.07%
New
122
Increased
245
Reduced
266
Closed
30
Calls
$913M
Puts
$771M
Net Calls
+$142M
Net Calls Change
+$212M

BIIB Hedge Fund Activity: Q4 2013 in Review

739 of the 3,459 institutional investors tracked by Wall St. Rank reported a position in Biogen (BIIB) for Q4 2013, worth a combined $61B — up 15% from $53B a quarter earlier.

Buyers outnumbered sellers: 122 funds opened new BIIB positions and 30 closed out — a net gain of 92 holders — while 245 added to existing stakes and 266 trimmed.

The largest buyer was T. Rowe Price Associates, adding an estimated $213M. The largest seller was JP Morgan Chase, cutting an estimated $493M.

  • 739 institutional investors held Biogen (BIIB) as of Q4 2013, up from 656 in Q3 2013.
  • Funds reported $61B of Biogen stock for Q4 2013, up 15% quarter-over-quarter.
  • 122 funds opened new Biogen positions in Q4 2013 and 30 closed out, a net change of +92 holders.
  • The largest Biogen buyer in Q4 2013 was T. Rowe Price Associates, an estimated $213M added.
  • The largest Biogen seller in Q4 2013 was JP Morgan Chase, an estimated $493M sold.

Based on aggregated 13F filings for Q4 2013.