1,010 hedge funds and large institutions have $37.6B invested in Biogen in 2019 Q2 according to their latest regulatory filings, with 84 funds opening new positions, 317 increasing their positions, 451 reducing their positions, and 142 closing their positions.

New
Increased
Maintained
Reduced
Closed

less ownership

Funds ownership:

less funds holding

Funds holding:

less capital invested

Capital invested by funds: $ → $

less call options, than puts

Call options by funds: $ | Put options by funds: $

27% less funds holding in top 10

Funds holding in top 10: 2216 (-6)

30% less repeat investments, than reductions

Existing positions increased: 317 | Existing positions reduced: 451

41% less first-time investments, than exits

New positions opened: 84 | Existing positions closed: 142

Holders
1,010
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
16
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$883M
Puts
$1.2B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
376
$2.71M
377
$2.62M
378
$2.62M
379
$2.62M
380
$2.61M
381
$2.6M
382
$2.59M
383
$2.57M
384
$2.56M
385
$2.55M
386
$2.49M
387
$2.49M
388
$2.46M
389
$2.45M
390
$2.42M
391
$2.39M
392
$2.38M
393
$2.38M
394
$2.37M
395
$2.36M
396
$2.36M
397
$2.35M
398
$2.35M
399
$2.35M
400
$2.34M