A detailed history of Polymer Capital Management (Us) LLC transactions in Biogen Inc. stock. As of the latest transaction made, Polymer Capital Management (Us) LLC holds 2,674 shares of BIIB stock, worth $448,028. This represents 0.04% of its overall portfolio holdings.

Number of Shares
2,674
Previous 3,760 28.88%
Holding current value
$448,028
Previous $472 Million 20.68%
% of portfolio
0.04%
Previous 0.06%

Shares

3 transactions
Quarter Operation Price Per share shares change shares Held SEC Form
Q3 2025

Nov 14, 2025

SELL
$122.68 - $148.84 $133,230 - $161,640
-1,086 Reduced 28.88%
2,674 $375 Million
Q2 2025

Aug 14, 2025

SELL
$113.38 - $135.49 $13,605 - $16,258
-120 Reduced 3.09%
3,760 $472 Million
Q1 2025

May 15, 2025

BUY
$133.43 - $153.27 $517,708 - $594,687
3,880 New
3,880 $531 Million

Others Institutions Holding BIIB

About BIOGEN INC.


  • Ticker BIIB
  • Exchange NASDAQ
  • Sector Healthcare
  • Industry Drug Manufacturers—General
  • Shares Outstandng 144,000,992
  • Market Cap $24.1B
  • Description
  • Biogen Inc. discovers, develops, manufactures, and delivers therapies for treating neurological and neurodegenerative diseases. The company offers TECFIDERA, VUMERITY, AVONEX, PLEGRIDY, TYSABRI, and FAMPYRA for multiple sclerosis (MS); SPINRAZA for spinal muscular atrophy; and FUMADERM to treat plaque psoriasis. It also provides BENEPALI, an eta...
More about BIIB
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