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 |
|---|---|---|---|---|---|---|---|
|
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
|
|
|
Nov 14, 2025
Q3 2025
|
Logos Global Management LP
San Francisco, CA |
SELL
|
- |
-100K- 50.0% |
$12.3M - $14.9M
|
100K
$16.8M
|
|
|
Nov 14, 2025
Q3 2025
|
Exodus Point Capital Management, LP
New York, NY |
SELL
|
- |
-97.6K- 75.34% |
$12M - $14.5M
|
31.9K
$5.35M
|
|
|
Nov 14, 2025
Q3 2025
|
Qube Research & Technologies LTD
London, X0 |
SELL
|
PUT |
-83.2K- 39.75% |
$10.2M - $12.4M
|
126K
$21.1M
|
|
|
Nov 13, 2025
Q3 2025
|
Jim Simons
Renaissance Technologies LLC | New York, Ny
|
SELL
|
- |
-80.7K- 7.72% |
$9.9M - $12M
|
964K
$162M
|
|
|
Nov 12, 2025
Q3 2025
|
Group One Trading, L.P.
Chicago, IL |
SELL
|
- |
-70.9K- 78.6% |
$8.7M - $10.6M
|
19.3K
$3.24M
|
|
|
Nov 14, 2025
Q3 2025
|
National Bank Of Canada
|
SELL
|
- |
-70.1K- 48.94% |
$8.6M - $10.4M
|
73.1K
$12.3M
|
|
|
Nov 13, 2025
Q3 2025
|
Capital Fund Management S.A.
Paris, I0 |
SELL
|
- |
-70K- 59.45% |
$8.58M - $10.4M
|
47.7K
$8M
|
|
|
Nov 12, 2025
Q3 2025
|
Dimensional Fund Advisors LP
Austin, TX |
SELL
|
- |
-55.4K- 5.97% |
$6.8M - $8.25M
|
873K
$146M
|
|
|
Nov 14, 2025
Q3 2025
|
Cubist Systematic Strategies, LLC
Stamford, CT |
SELL
|
- |
-54.6K- 97.68% |
$6.7M - $8.13M
|
1.3K
$218K
|
|
|
Nov 05, 2025
Q3 2025
|
Pro Share Advisors LLC
|
SELL
|
- |
-41.4K- 17.35% |
$5.08M - $6.16M
|
197K
$33M
|
|
|
Nov 07, 2025
Q3 2025
|
Skandinaviska Enskilda Banken Ab (Publ)
Stockholm, V7 |
SELL
|
- |
-38.1K- 56.74% |
$4.68M - $5.68M
|
29.1K
$4.87M
|
|
|
Nov 14, 2025
Q3 2025
|
Northern Trust Corp
Chicago, IL |
SELL
|
- |
-37.6K- 2.45% |
$4.62M - $5.6M
|
1.5M
$251M
|
|
|
Nov 14, 2025
Q3 2025
|
Summit Tx Capital, L.P.
Fort Worth, TX |
SELL
|
- |
-37.6K- 68.38% |
$4.61M - $5.6M
|
17.4K
$2.91M
|
|
|
Nov 13, 2025
Q3 2025
|
Capital Fund Management S.A.
Paris, I0 |
SELL
|
PUT |
-36.7K- 33.92% |
$4.5M - $5.46M
|
71.5K
$12M
|
|
|
Nov 14, 2025
Q3 2025
|
Dz Bank Ag Deutsche Zentral Genossenschafts Bank, Frankfurt Am Main
Frankfurt Am Main, 2M |
SELL
|
- |
-33.9K- 23.01% |
$4.16M - $5.05M
|
114K
$19M
|
|
|
Nov 14, 2025
Q3 2025
|
Hrt Financial LP
New York, NY |
SELL
|
- |
-33.8K- 88.38% |
$4.15M - $5.04M
|
4.45K
$745K
|
|
|
Nov 12, 2025
Q3 2025
|
First Trust Advisors LP
Wheaton, IL |
SELL
|
- |
-33.3K- 3.81% |
$4.08M - $4.95M
|
841K
$141M
|
|
|
Nov 14, 2025
Q3 2025
|
Squarepoint Ops LLC
New York, NY |
SELL
|
- |
-29.5K- 79.47% |
$3.62M - $4.4M
|
7.63K
$1.28M
|
|
|
Nov 14, 2025
Q3 2025
|
Pdt Partners, LLC
New York, NY |
SELL
|
- |
-29.3K- 92.58% |
$3.6M - $4.36M
|
2.35K
$393K
|
|
|
Nov 13, 2025
Q3 2025
|
Jane Street Group, LLC
New York, NY |
SELL
|
- |
-27.7K- 83.84% |
$3.4M - $4.12M
|
5.34K
$895K
|
|
|
Oct 31, 2025
Q3 2025
|
Amf Tjanstepension Ab
|
SELL
|
- |
-25.6K- 43.37% |
$3.15M - $3.82M
|
33.5K
$5.61M
|
|
|
Nov 06, 2025
Q3 2025
|
Illinois Municipal Retirement Fund
|
SELL
|
- |
-23.8K- 22.26% |
$2.92M - $3.54M
|
83.1K
$13.9M
|
|
|
Nov 12, 2025
Q3 2025
|
Rafferty Asset Management, LLC
New York, NY |
SELL
|
- |
-21.8K- 12.09% |
$2.68M - $3.25M
|
159K
$26.6M
|
|
|
Nov 10, 2025
Q3 2025
|
Citigroup Inc
|
SELL
|
- |
-20.9K- 9.38% |
$2.57M - $3.12M
|
202K
$33.9M
|
|
|
Nov 12, 2025
Q3 2025
|
Vinva Investment Management LTD
Sydney, C3 |
SELL
|
- |
-20.2K- 34.25% |
$2.47M - $3M
|
38.7K
$6.48M
|
|
|
Nov 14, 2025
Q3 2025
|
Palo Alto Investors LP
Palo Alto, CA |
SELL
|
- |
-20.1K- 9.77% |
$2.47M - $2.99M
|
186K
$31.1M
|
|
|
Nov 14, 2025
Q3 2025
|
Csm Advisors, LLC
Pittsburgh, PA |
SELL
|
- |
-19.5K- 70.97% |
$2.39M - $2.9M
|
7.97K
$1.34M
|
|
|
Nov 13, 2025
Q3 2025
|
Mackenzie Financial Corp
Toronto Ontario, A6 |
SELL
|
- |
-18.6K- 22.57% |
$2.28M - $2.77M
|
63.8K
$10.7M
|
|
|
Nov 06, 2025
Q3 2025
|
Abrdn PLC
|
SELL
|
- |
-17.9K- 11.41% |
$2.19M - $2.66M
|
139K
$23.3M
|
|