Latest Institutional Sells of Biogen Inc. (BIIB)
This list provides information on the latest institutional transactions involving Biogen Inc. (BIIB) stock that were sells. The list includes the name of the institution, the number of shares exchanged, the range of values for the transaction, and the number of shares held by the institution after the sale has occurred.
| Report Date | Institution (Fund) | Operation | Option | Shares change | Value Range | Shares Held | Trade History |
|---|---|---|---|---|---|---|---|
|
Jan 08, 2026
Q4 2025
|
Nordea Investment Management Ab
Stockholm, V7 |
SELL
|
- |
-119K- 89.42% |
$16.9M - $19.9M
|
14K
$2.35M
|
|
|
Jan 22, 2026
Q4 2025
|
Robeco Institutional Asset Management B.V.
|
SELL
|
- |
-60.1K- 8.96% |
$8.56M - $10.1M
|
611K
$102M
|
|
|
Jan 23, 2026
Q4 2025
|
Sumitomo Mitsui Trust Holdings, Inc.
|
SELL
|
- |
-45K- 10.82% |
$6.4M - $7.54M
|
371K
$62.1M
|
|
|
Jan 16, 2026
Q4 2025
|
Louisiana State Employees Retirement System
|
SELL
|
- |
-10.9K- 59.24% |
$1.55M - $1.83M
|
7.5K
$1.26M
|
|
|
Jan 15, 2026
Q4 2025
|
Nisa Investment Advisors, LLC
|
SELL
|
- |
-9.12K- 19.18% |
$1.3M - $1.53M
|
38.4K
$6.44M
|
|
|
Jan 14, 2026
Q4 2025
|
Fluent Financial, LLC
|
SELL
|
- |
-6.4K- 25.05% |
$910K - $1.07M
|
19.1K
$3.21M
|
|
|
Jan 15, 2026
Q4 2025
|
Mn Services Vermogensbeheer B.V.
|
SELL
|
- |
-3.3K- 12.41% |
$469K - $553K
|
23.3K
$3.9M
|
|
|
Jan 15, 2026
Q4 2025
|
J. Safra Sarasin Holding Ag
Basel, V8 |
SELL
|
- |
-2.61K- 28.71% |
$371K - $437K
|
6.47K
$1.08M
|
|
|
Jan 21, 2026
Q4 2025
|
Yousif Capital Management, LLC
|
SELL
|
- |
-1.16K- 6.77% |
$164K - $194K
|
15.9K
$2.67M
|
|
|
Jan 06, 2026
Q4 2025
|
Board Of The Pension Protection Fund
Croydon, X0 |
SELL
|
- |
-1.1K- 78.57% |
$156K - $184K
|
300
$50.3K
|
|
|
Jan 23, 2026
Q4 2025
|
State Of Alaska, Department Of Revenue
|
SELL
|
- |
-995- 5.47% |
$142K - $167K
|
17.2K
$2.88M
|
|
|
Jan 09, 2026
Q4 2025
|
Assenagon Asset Management S.A.
|
SELL
|
- |
-713- 10.31% |
$101K - $119K
|
6.2K
$1.04M
|
|
|
Jan 12, 2026
Q4 2025
|
E. Ohman J:Or Asset Management Ab
Stockholm, V7 |
SELL
|
- |
-680- 10.63% |
$96.7K - $114K
|
5.72K
$958K
|
|
|
Jan 16, 2026
Q4 2025
|
Trust CO Of Vermont
|
SELL
|
- |
-660- 62.92% |
$93.9K - $111K
|
389
$65.2K
|
|
|
Jan 21, 2026
Q4 2025
|
Flagship Harbor Advisors, LLC
|
SELL
|
- |
-607- 26.4% |
$86.4K - $102K
|
1.69K
$283K
|
|
|
Jan 23, 2026
Q4 2025
|
Patton Fund Management, Inc.
|
SELL
|
- |
-602- 32.61% |
$85.6K - $101K
|
1.24K
$208K
|
|
|
Jan 12, 2026
Q4 2025
|
Avanza Fonder Ab
Stockholm, V7 |
SELL
|
- |
-544- 3.56% |
$77.4K - $91.1K
|
14.7K
$2.47M
|
|
|
Jan 21, 2026
Q4 2025
|
Prime Capital Investment Advisors, LLC
Overland Park, KS |
SELL
|
- |
-525- 14.0% |
$74.7K - $88K
|
3.23K
$541K
|
|
|
Jan 14, 2026
Q4 2025
|
Hourglass Capital, LLC
|
SELL
|
- |
-420- 2.34% |
$59.7K - $70.4K
|
17.6K
$2.94M
|
|
|
Jan 05, 2026
Q4 2025
|
Park Avenue Securities LLC
|
SELL
|
- |
-417- 12.1% |
$59.3K - $69.9K
|
3.03K
$508K
|
|
|
Jan 14, 2026
Q4 2025
|
Exchange Traded Concepts, LLC
|
SELL
|
- |
-367- 14.97% |
$52.2K - $61.5K
|
2.08K
$349K
|
|
|
Jan 16, 2026
Q4 2025
|
Ronald Blue Trust, Inc.
Brentwood, TN |
SELL
|
- |
-362- 30.12% |
$51.5K - $60.7K
|
840
$141K
|
|
|
Jan 23, 2026
Q4 2025
|
Sage Mountain Advisors LLC
|
SELL
|
- |
-348- 14.56% |
$49.5K - $58.3K
|
2.04K
$342K
|
|
|
Jan 16, 2026
Q4 2025
|
Linden Thomas Advisory Services, LLC
Charlotte, NC |
SELL
|
- |
-329- 4.33% |
$46.8K - $55.1K
|
7.26K
$1.22M
|
|
|
Jan 16, 2026
Q4 2025
|
Banque Pictet & Cie Sa
|
SELL
|
- |
-305- 0.43% |
$43.4K - $51.1K
|
71.4K
$12M
|
|
|
Jan 14, 2026
Q4 2025
|
Beacon Investment Advisory Services, Inc.
|
SELL
|
- |
-256- 1.98% |
$36.4K - $42.9K
|
12.7K
$2.12M
|
|
|
Jan 13, 2026
Q4 2025
|
Capital Investment Advisors, LLC
|
SELL
|
- |
-144- 6.71% |
$20.5K - $24.1K
|
2K
$335K
|
|
|
Jan 23, 2026
Q4 2025
|
Nbt Bank N A
|
SELL
|
- |
-108- 46.15% |
$15.4K - $18.1K
|
126
$21.1K
|
|
|
Jan 20, 2026
Q4 2025
|
Cidel Asset Management Inc
Toronto, Ontario, A6 |
SELL
|
- |
-85- 4.2% |
$12.1K - $14.2K
|
1.94K
$325K
|
|
|
Jan 23, 2026
Q4 2025
|
Bsw Wealth Partners
Boulder, CO |
SELL
|
- |
-79- 3.97% |
$11.2K - $13.2K
|
1.91K
$320K
|
|
|
Jan 23, 2026
Q4 2025
|
Choreo, LLC
Minneapolis, MN |
SELL
|
- |
-67- 2.74% |
$9.53K - $11.2K
|
2.38K
$398K
|
|
|
Jan 15, 2026
Q4 2025
|
Retirement Systems Of Alabama
|
SELL
|
- |
-65- 0.21% |
$9.25K - $10.9K
|
31.2K
$5.23M
|
|
|
Jan 14, 2026
Q4 2025
|
First County Bank /Ct/
Stamford, CT |
SELL
|
- |
-65- 1.45% |
$9.25K - $10.9K
|
4.41K
$739K
|
|
|
Jan 20, 2026
Q4 2025
|
Cigna Investments Inc
Bloomfield, CT |
SELL
|
- |
-62- 4.26% |
$8.82K - $10.4K
|
1.4K
$234K
|
|
|
Jan 20, 2026
Q4 2025
|
Quintet Private Bank (Europe) S.A.
Luxembourg, N4 |
SELL
|
- |
-60- 23.53% |
$8.54K - $10.1K
|
195
$32.7K
|
|
|
Jan 13, 2026
Q4 2025
|
Trust Asset Management LLC
Houston, TX |
SELL
|
- |
-58- 3.46% |
$8.25K - $9.72K
|
1.62K
$271K
|
|
|
Jan 20, 2026
Q4 2025
|
Tower Trust & Investment CO
Davenport, IA |
SELL
|
- |
-43- 1.48% |
$6.12K - $7.2K
|
2.86K
$479K
|
|
|
Jan 23, 2026
Q4 2025
|
Transcend Capital Advisors, LLC
|
SELL
|
- |
-30- 1.79% |
$4.27K - $5.03K
|
1.65K
$276K
|
|
|
Jan 23, 2026
Q4 2025
|
Ogorek Anthony Joseph
|
SELL
|
- |
-20- 11.63% |
$2.85K - $3.35K
|
152
$25.5K
|
|
|
Jan 15, 2026
Q4 2025
|
Ironwood Financial, LLC
|
SELL
|
- |
-8- 0.23% |
$1.14K - $1.34K
|
3.54K
$592K
|
|
|
Jan 12, 2026
Q4 2025
|
Byrne Asset Management LLC
|
SELL
|
- |
-8- 21.05% |
$1.14K - $1.34K
|
30
$5.03K
|
|
|
Jan 14, 2026
Q4 2025
|
Spire Wealth Management
|
SELL
|
- |
-7- 4.22% |
$996 - $1.17K
|
159
$26.6K
|
|
|
Jan 20, 2026
Q4 2025
|
Harbor Capital Advisors, Inc.
|
SELL
|
- |
-4- 0.17% |
$569 - $670
|
2.29K
$384K
|
|
|
Jan 16, 2026
Q4 2025
|
Tema Etfs LLC
New York, NY |
SELL
|
- |
-4- 0.15% |
$569 - $670
|
2.62K
$439K
|
|
|
Jan 23, 2026
Q4 2025
|
Private Wealth Management Group, LLC
Princeton, NJ |
SELL
|
- |
-2- 3.7% |
$285 - $335
|
52
$8.71K
|
|
|
Jan 23, 2026
Q4 2025
|
Avion Wealth
The Woodlands, TX |
SELL
|
- |
-1- 1.37% |
$142 - $168
|
72
$12.1K
|
|
| Q3 2025 | |||||||
|
Nov 14, 2025
Q3 2025
|
D. E. Shaw & Co., Inc.
New York, NY |
SELL
|
- |
-888K- 65.02% |
$109M - $132M
|
478K
$80.1M
|
|
|
Nov 10, 2025
Q3 2025
|
Primecap Management CO
Pasadena, CA |
SELL
|
- |
-847K- 5.36% |
$104M - $126M
|
15M
$2.51B
|
|
|
Nov 14, 2025
Q3 2025
|
Qube Research & Technologies LTD
London, X0 |
SELL
|
- |
-622K- 83.64% |
$76.3M - $92.5M
|
122K
$20.4M
|
|
|
Nov 14, 2025
Q3 2025
|
Wellington Management Group LLP
Boston, MA |
SELL
|
- |
-552K- 11.5% |
$67.7M - $82.1M
|
4.25M
$712M
|
|