1,018 hedge funds and large institutions have $51.5B invested in Biogen in 2017 Q1 according to their latest regulatory filings, with 90 funds opening new positions, 389 increasing their positions, 395 reducing their positions, and 83 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more ownership

Funds ownership:

less funds holding

Funds holding:

less repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

4% less capital invested

Capital invested by funds: $53.8B → $51.5B (-$2.28B)

25% less call options, than puts

Call options by funds: $808M | Put options by funds: $1.07B

34% less funds holding in top 10

Funds holding in top 10: 4127 (-14)

Holders
1,018
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
27
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$808M
Puts
$1.07B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
301
$7.56M
302
$7.55M
303
$7.53M
304
$7.49M
305
$7.47M
306
$7.39M
307
$7.36M
308
$7.17M
309
$7.15M
310
$7.12M
311
$7.11M
312
$7.08M
313
$7.04M
314
$7.04M
315
$7.03M
316
$6.99M
317
$6.86M
318
$6.84M
319
$6.78M
320
$6.78M
321
$6.77M
322
$6.77M
323
$6.71M
324
$6.65M
325
$6.56M