1,100 hedge funds and large institutions have $51.4B invested in Biogen in 2018 Q1 according to their latest regulatory filings, with 94 funds opening new positions, 424 increasing their positions, 416 reducing their positions, and 101 closing their positions.

New
Increased
Maintained
Reduced
Closed

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

less ownership

Funds ownership:

less first-time investments, than exits

New positions opened: | Existing positions closed:

less funds holding

Funds holding:

7% less funds holding in top 10

Funds holding in top 10: 2826 (-2)

14% less capital invested

Capital invested by funds: $60B → $51.4B (-$8.57B)

34% less call options, than puts

Call options by funds: $695M | Put options by funds: $1.05B

Holders
1,100
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
26
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$695M
Puts
$1.05B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
376
$5.03M
377
$5.02M
378
$4.96M
379
$4.92M
380
$4.89M
381
$4.83M
382
$4.83M
383
$4.8M
384
$4.79M
385
$4.75M
386
$4.72M
387
$4.71M
388
$4.65M
389
$4.63M
390
$4.63M
391
$4.56M
392
$4.54M
393
$4.54M
394
$4.51M
395
$4.5M
396
$4.5M
397
$4.49M
398
$4.48M
399
$4.48M
400
$4.47M