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 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 06, 2026
Q4 2025
|
Board Of The Pension Protection Fund
Croydon, X0 |
SELL
|
- |
-1.1K- 78.57% |
$156K - $184K
|
300
$50.3K
|
|
|
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 12, 2026
Q4 2025
|
Avanza Fonder Ab
Stockholm, V7 |
SELL
|
- |
-544- 3.56% |
$77.4K - $91.1K
|
14.7K
$2.47M
|
|
|
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 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 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 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
|
|
| 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
|
|
|
Nov 14, 2025
Q3 2025
|
David A. Siegel
Two Sigma Advisers, LP | New York, Ny
|
SELL
|
- |
-442K- 97.04% |
$54.2M - $65.8M
|
13.5K
$2.26M
|
|
|
Nov 14, 2025
Q3 2025
|
T. Rowe Price Investment Management, Inc.
Baltimore, MD |
SELL
|
- |
-327K- 23.45% |
$40.1M - $48.7M
|
1.07M
$179M
|
|
|
Nov 14, 2025
Q3 2025
|
Ubs Asset Management Americas Inc
Chicago, IL |
SELL
|
- |
-304K- 17.44% |
$37.3M - $45.2M
|
1.44M
$241M
|
|
|
Nov 14, 2025
Q3 2025
|
Two Sigma Investments, LP
New York, NY |
SELL
|
- |
-302K- 59.56% |
$37.1M - $45M
|
205K
$34.4M
|
|
|
Nov 05, 2025
Q3 2025
|
State Of Michigan Retirement System
|
SELL
|
- |
-248K- 85.2% |
$30.4M - $36.9M
|
43.1K
$7.22M
|
|
|
Nov 13, 2025
Q3 2025
|
Arrowstreet Capital, Limited Partnership
Boston, MA |
SELL
|
- |
-244K- 39.01% |
$29.9M - $36.3M
|
381K
$63.8M
|
|
|
Nov 14, 2025
Q3 2025
|
Ken Griffin
Citadel Advisors LLC | Chicago, Il
|
SELL
|
- |
-236K- 38.76% |
$28.9M - $35.1M
|
373K
$62.5M
|
|
|
Nov 07, 2025
Q3 2025
|
Jpmorgan Chase & CO
New York, NY |
SELL
|
- |
-195K- 13.35% |
$24M - $29.1M
|
1.27M
$213M
|
|
|
Nov 14, 2025
Q3 2025
|
Susquehanna International Group, LLP
Bala Cynwyd, PA |
SELL
|
- |
-153K- 25.76% |
$18.8M - $22.8M
|
441K
$73.9M
|
|
|
Nov 14, 2025
Q3 2025
|
State Street Corp
Boston, MA |
SELL
|
- |
-149K- 2.0% |
$18.3M - $22.2M
|
7.32M
$1.23B
|
|
|
Nov 04, 2025
Q3 2025
|
Allianz Asset Management Gmb H
Munich, 2M |
SELL
|
- |
-130K- 24.71% |
$16M - $19.4M
|
397K
$66.5M
|
|
|
Nov 14, 2025
Q3 2025
|
Susquehanna International Group, LLP
Bala Cynwyd, PA |
SELL
|
PUT |
-125K- 12.11% |
$15.4M - $18.6M
|
909K
$152M
|
|
|
Oct 17, 2025
Q3 2025
|
J. L. Bainbridge & Co., Inc.
|
SELL
|
- |
-119K- 97.57% |
$14.6M - $17.8M
|
2.97K
$497K
|
|
|
Nov 13, 2025
Q3 2025
|
Jane Street Group, LLC
New York, NY |
SELL
|
PUT |
-115K- 35.7% |
$14.1M - $17.2M
|
208K
$34.8M
|
|
|
Nov 14, 2025
Q3 2025
|
Ken Griffin
Citadel Advisors LLC | Chicago, Il
|
SELL
|
PUT |
-106K- 40.11% |
$13M - $15.7M
|
158K
$26.5M
|
|
|
Nov 13, 2025
Q3 2025
|
Connor, Clark & Lunn Investment Management Ltd.
|
SELL
|
- |
-101K- 46.3% |
$12.4M - $15M
|
117K
$19.6M
|
|
|
Nov 13, 2025
Q3 2025
|
Russell Investments Group, Ltd.
|
SELL
|
- |
-101K- 41.6% |
$12.4M - $15M
|
141K
$23.7M
|
|