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 |
|---|---|---|---|---|---|---|---|
|
Aug 14, 2025
Q2 2025
|
T. Rowe Price Investment Management, Inc.
Baltimore, MD |
SELL
|
- |
-1.27M- 47.58% |
$144M - $172M
|
1.39M
$200M
|
|
|
Aug 13, 2025
Q2 2025
|
Amundi
Paris, I0 |
SELL
|
- |
-736K- 55.94% |
$83.5M - $99.7M
|
580K
$83.3M
|
|
|
Aug 14, 2025
Q2 2025
|
Ken Griffin
Citadel Advisors LLC | Chicago, Il
|
SELL
|
PUT |
-735K- 73.58% |
$83.3M - $99.5M
|
264K
$37.9M
|
|
|
Aug 08, 2025
Q2 2025
|
Sg Americas Securities, LLC
|
SELL
|
- |
-697K- 96.88% |
$79.1M - $94.5M
|
22.5K
$3.23M
|
|
|
Aug 27, 2025
Q2 2025
|
Brinker Capital Investments, LLC
|
SELL
|
- |
-509K- 98.34% |
$57.7M - $68.9M
|
8.59K
$1.23M
|
|
|
Aug 14, 2025
Q2 2025
|
Qube Research & Technologies LTD
London, X0 |
SELL
|
- |
-483K- 39.41% |
$54.8M - $65.5M
|
743K
$107M
|
|
|
Aug 14, 2025
Q2 2025
|
Qube Research & Technologies LTD
London, X0 |
SELL
|
PUT |
-401K- 65.71% |
$45.5M - $54.3M
|
209K
$30.1M
|
|
|
Aug 27, 2025
Q2 2025
|
Squarepoint Ops LLC
New York, NY |
SELL
|
- |
-378K- 91.06% |
$42.9M - $51.3M
|
37.2K
$5.34M
|
|
|
Aug 14, 2025
Q2 2025
|
Two Sigma Investments, LP
New York, NY |
SELL
|
- |
-372K- 42.28% |
$42.2M - $50.4M
|
508K
$72.9M
|
|
|
Aug 12, 2025
Q2 2025
|
Franklin Resources Inc
San Mateo, CA |
SELL
|
- |
-359K- 61.06% |
$40.7M - $48.7M
|
229K
$32.9M
|
|
|
Aug 14, 2025
Q2 2025
|
Price T Rowe Associates Inc
Baltimore, MD |
SELL
|
- |
-317K- 27.56% |
$36M - $43M
|
834K
$120M
|
|
|
Aug 14, 2025
Q2 2025
|
David A. Siegel
Two Sigma Advisers, LP | New York, Ny
|
SELL
|
- |
-222K- 32.76% |
$25.2M - $30.1M
|
456K
$65.4M
|
|
|
Aug 14, 2025
Q2 2025
|
D. E. Shaw & Co., Inc.
New York, NY |
SELL
|
- |
-219K- 13.84% |
$24.9M - $29.7M
|
1.37M
$196M
|
|
|
Aug 14, 2025
Q2 2025
|
Verition Fund Management LLC
Greenwich, CT |
SELL
|
- |
-216K- 90.24% |
$24.4M - $29.2M
|
23.3K
$3.35M
|
|
|
Aug 14, 2025
Q2 2025
|
Ubs Group Ag
|
SELL
|
- |
-200K- 31.02% |
$22.7M - $27.2M
|
446K
$64M
|
|
|
Aug 04, 2025
Q2 2025
|
Retirement Systems Of Alabama
|
SELL
|
- |
-152K- 82.87% |
$17.2M - $20.6M
|
31.4K
$4.52M
|
|
|
Jul 28, 2025
Q2 2025
|
Td Asset Management Inc
|
SELL
|
- |
-141K- 49.7% |
$16M - $19.2M
|
143K
$20.5M
|
|
|
Aug 11, 2025
Q2 2025
|
Primecap Management CO
Pasadena, CA |
SELL
|
- |
-141K- 0.89% |
$16M - $19.1M
|
15.8M
$2.27B
|
|
|
Jul 28, 2025
Q2 2025
|
Allianz Asset Management Gmb H
Munich, 2M |
SELL
|
- |
-141K- 21.07% |
$16M - $19.1M
|
527K
$75.7M
|
|
|
Aug 14, 2025
Q2 2025
|
Hrt Financial LP
New York, NY |
SELL
|
- |
-140K- 78.54% |
$15.9M - $19M
|
38.3K
$5.5M
|
|
|
Aug 13, 2025
Q2 2025
|
Patient Capital Management, LLC
Baltimore, MD |
SELL
|
- |
-135K- 29.66% |
$15.3M - $18.3M
|
320K
$46M
|
|
|
Aug 14, 2025
Q2 2025
|
D. E. Shaw & Co., Inc.
New York, NY |
SELL
|
PUT |
-130K- 93.81% |
$14.8M - $17.7M
|
8.6K
$1.23M
|
|
|
Aug 07, 2025
Q2 2025
|
Zurcher Kantonalbank (Zurich Cantonalbank)
Zurich, V8 |
SELL
|
- |
-121K- 64.69% |
$13.8M - $16.5M
|
66.3K
$9.52M
|
|
|
Aug 13, 2025
Q2 2025
|
Barclays PLC
London, X0 |
SELL
|
- |
-121K- 13.14% |
$13.7M - $16.4M
|
798K
$115M
|
|
|
Aug 13, 2025
Q2 2025
|
Capital Fund Management S.A.
Paris, I0 |
SELL
|
PUT |
-116K- 51.8% |
$13.2M - $15.8M
|
108K
$15.5M
|
|
|
Jul 31, 2025
Q2 2025
|
Nisa Investment Advisors, LLC
|
SELL
|
- |
-102K- 66.78% |
$11.6M - $13.9M
|
50.9K
$7.31M
|
|
|
Aug 14, 2025
Q2 2025
|
Paul Tudor Jones
Tudor Investment Corp Et Al | Stamford, Ct
|
SELL
|
- |
-99.9K- 94.33% |
$11.3M - $13.5M
|
6K
$862K
|
|
|
Aug 14, 2025
Q2 2025
|
Susquehanna International Group, LLP
Bala Cynwyd, PA |
SELL
|
PUT |
-96.3K- 8.52% |
$10.9M - $13M
|
1.03M
$148M
|
|
|
Aug 13, 2025
Q2 2025
|
Capital Fund Management S.A.
Paris, I0 |
SELL
|
- |
-95.3K- 44.75% |
$10.8M - $12.9M
|
118K
$16.9M
|
|
|
Aug 14, 2025
Q2 2025
|
Cubist Systematic Strategies, LLC
Stamford, CT |
SELL
|
- |
-85K- 60.31% |
$9.63M - $11.5M
|
55.9K
$8.03M
|
|
|
Aug 11, 2025
Q2 2025
|
Citigroup Inc
|
SELL
|
- |
-79.4K- 26.23% |
$9M - $10.8M
|
223K
$32.1M
|
|
|
Aug 13, 2025
Q2 2025
|
Walleye Capital LLC
Plymouth, MN |
SELL
|
- |
-66K- 94.34% |
$7.48M - $8.94M
|
3.96K
$568K
|
|
|
Aug 13, 2025
Q2 2025
|
Jump Financial, LLC
Chicago, IL |
SELL
|
- |
-65K- 88.83% |
$7.37M - $8.8M
|
8.17K
$1.17M
|
|
|
Aug 08, 2025
Q2 2025
|
M&G PLC
London, X0 |
SELL
|
- |
-64.1K- 88.18% |
$7.27M - $8.69M
|
8.59K
$1.23M
|
|
|
Aug 07, 2025
Q2 2025
|
Connor, Clark & Lunn Investment Management Ltd.
|
SELL
|
- |
-60.1K- 21.63% |
$6.81M - $8.14M
|
218K
$31.3M
|
|
|
Aug 13, 2025
Q2 2025
|
National Bank Of Canada
|
SELL
|
- |
-58.3K- 28.94% |
$6.61M - $7.9M
|
143K
$20.6M
|
|
|
Aug 12, 2025
Q2 2025
|
Dimensional Fund Advisors LP
Austin, TX |
SELL
|
- |
-58.2K- 5.9% |
$6.6M - $7.89M
|
928K
$133M
|
|
|
Aug 14, 2025
Q2 2025
|
Jacobs Levy Equity Management, Inc
Florham Park, NJ |
SELL
|
- |
-48.8K- 79.44% |
$5.53M - $6.61M
|
12.6K
$1.81M
|
|
|
Aug 13, 2025
Q2 2025
|
Schroder Investment Management Group
London, X0 |
SELL
|
- |
-46.6K- 77.18% |
$5.28M - $6.31M
|
13.8K
$1.98M
|
|
|
Aug 13, 2025
Q2 2025
|
California Public Employees Retirement System
Sacramento, CA |
SELL
|
- |
-46K- 11.96% |
$5.22M - $6.24M
|
339K
$48.7M
|
|
|
Aug 14, 2025
Q2 2025
|
Axa S.A.
Paris, I0 |
SELL
|
- |
-45.4K- 29.48% |
$5.15M - $6.15M
|
109K
$15.6M
|
|
|
Aug 14, 2025
Q2 2025
|
Engineers Gate Manager LP
New York, NY |
SELL
|
- |
-44K- 57.11% |
$4.98M - $5.95M
|
33K
$4.74M
|
|
|
Aug 13, 2025
Q2 2025
|
Hsbc Holdings PLC
London, X0 |
SELL
|
- |
-40.8K- 8.42% |
$4.62M - $5.52M
|
443K
$63.7M
|
|
|
Aug 14, 2025
Q2 2025
|
Paul Tudor Jones
Tudor Investment Corp Et Al | Stamford, Ct
|
SELL
|
PUT |
-39.1K- 53.13% |
$4.43M - $5.3M
|
34.5K
$4.95M
|
|
|
Aug 13, 2025
Q2 2025
|
Lido Advisors, LLC
Los Angeles, CA |
SELL
|
- |
-37.9K- 88.04% |
$4.3M - $5.13M
|
5.15K
$739K
|
|
|
Aug 13, 2025
Q2 2025
|
Rhenman & Partners Asset Management Ab
Stockholm, V7 |
SELL
|
- |
-37.5K- 75.76% |
$4.25M - $5.08M
|
12K
$1.72M
|
|
|
Aug 15, 2025
Q2 2025
|
Morgan Stanley
New York, NY |
SELL
|
- |
-34.5K- 1.73% |
$3.91M - $4.67M
|
1.96M
$281M
|
|
|
Jul 11, 2025
Q2 2025
|
Assenagon Asset Management S.A.
|
SELL
|
- |
-33.9K- 75.59% |
$3.84M - $4.59M
|
10.9K
$1.57M
|
|
|
Aug 14, 2025
Q2 2025
|
Point72 (Difc) LTD
Dubai, C0 |
SELL
|
- |
-33.5K- 67.3% |
$3.8M - $4.55M
|
16.3K
$2.34M
|
|
|
Aug 12, 2025
Q2 2025
|
Prudential Financial Inc
Newark, NJ |
SELL
|
- |
-32.8K- 7.8% |
$3.72M - $4.45M
|
388K
$55.7M
|