Latest Institutional Transactions on Biogen Inc. (BIIB)
This table provides information on the latest institutional transactions involving Biogen Inc. (BIIB) stock. The table includes the name of the institution, the type of operation (buy or sell), whether options were involved, the number of shares exchanged, the range of values for the transaction, and the number of shares held by the institution after the transaction has occurred.
| Report Date | Institution (Fund) | Operation | Option | Shares change | Value Range | Shares Held | Trade History |
|---|---|---|---|---|---|---|---|
|
Aug 14, 2025
Q2 2025
|
Man Group PLC
London, X0 |
BUY
|
- |
28K+ 3.65% |
$3.17M - $3.79M
|
793K
$114M
|
|
|
Aug 14, 2025
Q2 2025
|
Ancora Advisors, LLC
Cleveland, OH |
BUY
|
- |
2New |
$227 - $271
|
2
$287
|
|
|
Aug 14, 2025
Q2 2025
|
Brevan Howard Capital Management LP
St. Helier, Y9 |
BUY
|
- |
5.04K+ 59.89% |
$571K - $683K
|
13.5K
$1.93M
|
|
|
Aug 14, 2025
Q2 2025
|
Ken Griffin
Citadel Advisors LLC | Chicago, Il
|
BUY
|
- |
66.8K+ 12.33% |
$7.58M - $9.05M
|
609K
$87.4M
|
|
|
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 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 14, 2025
Q2 2025
|
Mbb Public Markets I LLC
Chicago, IL |
SELL
|
- |
-421- 19.58% |
$47.7K - $57K
|
1.73K
$248K
|
|
|
Aug 14, 2025
Q2 2025
|
Israel Englander
Millennium Management LLC | New York, Ny
|
BUY
|
- |
252K+ 59.32% |
$28.5M - $34.1M
|
676K
$97M
|
|
|
Aug 14, 2025
Q2 2025
|
Israel Englander
Millennium Management LLC | New York, Ny
|
SELL
|
PUT |
-21.2K- 28.12% |
$2.4M - $2.87M
|
54.2K
$7.78M
|
|
|
Aug 14, 2025
Q2 2025
|
Quantinno Capital Management LP
New York, NY |
BUY
|
- |
37.4K+ 223.84% |
$4.24M - $5.07M
|
54.2K
$7.78M
|
|
|
Aug 14, 2025
Q2 2025
|
Sphera Funds Management Ltd.
Tel Aviv, L3 |
BUY
|
- |
60K+ 263.88% |
$6.8M - $8.13M
|
82.7K
$11.9M
|
|
|
Aug 14, 2025
Q2 2025
|
Schonfeld Strategic Advisors LLC
New York, NY |
BUY
|
- |
64KNew |
$7.26M - $8.67M
|
64K
$9.19M
|
|
|
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
|
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 14, 2025
Q2 2025
|
Jane Street Group, LLC
New York, NY |
SELL
|
- |
-4.21K- 11.31% |
$478K - $571K
|
33K
$4.74M
|
|
|
Aug 14, 2025
Q2 2025
|
Jane Street Group, LLC
New York, NY |
BUY
|
PUT |
113K+ 53.59% |
$12.8M - $15.3M
|
323K
$46.4M
|
|
|
Aug 14, 2025
Q2 2025
|
Sunbelt Securities, Inc.
Houston, TX |
BUY
|
- |
477New |
$54.1K - $64.6K
|
477
$68.5K
|
|
|
Aug 14, 2025
Q2 2025
|
Sherbrooke Park Advisers LLC
White Plains, NY |
BUY
|
- |
2.51KNew |
$285K - $340K
|
2.51K
$361K
|
|
|
Aug 14, 2025
Q2 2025
|
Atomi Financial Group, Inc.
Irvine, CA |
BUY
|
- |
1.8KNew |
$204K - $244K
|
1.8K
$258K
|
|
|
Aug 14, 2025
Q2 2025
|
Syon Capital LLC
San Francisco, CA |
SELL
|
- |
-794- 26.07% |
$90K - $108K
|
2.25K
$323K
|
|
|
Aug 14, 2025
Q2 2025
|
Vident Advisory, LLC
Alpharetta, GA |
SELL
|
- |
-1.77K- 25.86% |
$200K - $239K
|
5.06K
$727K
|
|
|
Aug 14, 2025
Q2 2025
|
Skopos Labs, Inc.
Riverhead, NY |
BUY
|
- |
3.33K+ 357.91% |
$377K - $451K
|
4.25K
$611K
|
|
|
Aug 14, 2025
Q2 2025
|
Federation Des Caisses Desjardins Du Quebec
Levis, A8 |
SELL
|
- |
-599- 5.58% |
$67.9K - $81.2K
|
10.1K
$1.46M
|
|
|
Aug 14, 2025
Q2 2025
|
Point72 (Difc) LTD
Dubai, C0 |
SELL
|
- |
-33.5K- 67.3% |
$3.8M - $4.55M
|
16.3K
$2.34M
|
|
|
Aug 14, 2025
Q2 2025
|
Point72 (Difc) LTD
Dubai, C0 |
SELL
|
PUT |
-16.6K- 98.81% |
$1.88M - $2.25M
|
200
$28.7K
|
|
|
Aug 14, 2025
Q2 2025
|
Mirae Asset Global Etfs Holdings Ltd.
Central, K3 |
SELL
|
- |
-4.76K- 3.29% |
$540K - $645K
|
140K
$20.1M
|
|
|
Aug 14, 2025
Q2 2025
|
Raymond James Financial Inc
St. Petersburg, FL |
BUY
|
- |
10K+ 23.91% |
$1.14M - $1.36M
|
52K
$7.47M
|
|
|
Aug 14, 2025
Q2 2025
|
Jain Global LLC
New York, NY |
BUY
|
- |
2.67K+ 11.42% |
$303K - $362K
|
26K
$3.74M
|
|
|
Aug 14, 2025
Q2 2025
|
Freestone Grove Partners LP
San Francisco, CA |
BUY
|
- |
111KNew |
$12.6M - $15M
|
111K
$15.9M
|
|
|
Aug 14, 2025
Q2 2025
|
Principia Wealth Advisory, LLC
Dallas, TX |
BUY
|
- |
13+ 7.65% |
$1.47K - $1.76K
|
183
$26.3K
|
|
|
Aug 14, 2025
Q2 2025
|
Summit Tx Capital, L.P.
Fort Worth, TX |
BUY
|
- |
43.3K+ 370.55% |
$4.91M - $5.87M
|
55K
$7.89M
|
|
|
Aug 14, 2025
Q2 2025
|
Dkrt Investments Corp.
Toronto, |
BUY
|
- |
2.5KNew |
$283K - $339K
|
2.5K
$359K
|
|
|
Aug 14, 2025
Q2 2025
|
Kestra Advisory Services, LLC
|
BUY
|
- |
314+ 16.41% |
$35.6K - $42.5K
|
2.23K
$320K
|
|
|
Aug 14, 2025
Q2 2025
|
Wfa Of San Diego, LLC
|
SELL
|
- |
-78- 23.56% |
$8.84K - $10.6K
|
253
$36.3K
|
|
|
Aug 14, 2025
Q2 2025
|
Great West Life Assurance CO
Winnipeg, A2 |
BUY
|
- |
5.43K+ 4.32% |
$615K - $735K
|
131K
$18.8M
|
|
|
Aug 14, 2025
Q2 2025
|
Harvest Fund Management Co., LTD
Beijing, F4 |
SELL
|
- |
-927- 10.03% |
$105K - $126K
|
8.32K
$1.19M
|
|
|
Aug 14, 2025
Q2 2025
|
Tower Research Capital LLC (Trc)
New York, NY |
SELL
|
- |
-5.31K- 64.57% |
$602K - $720K
|
2.91K
$418K
|
|
|
Aug 14, 2025
Q2 2025
|
E Fund Management Co., Ltd.
Guangzhou, F4 |
BUY
|
- |
423+ 3.16% |
$48K - $57.3K
|
13.8K
$1.98M
|
|
|
Aug 14, 2025
Q2 2025
|
Captrust Financial Advisors
Raleigh, NC |
BUY
|
- |
2.01K+ 16.0% |
$228K - $273K
|
14.6K
$2.1M
|
|
|
Aug 13, 2025
Q2 2025
|
Baird Financial Group, Inc.
Milwaukee, WI |
SELL
|
- |
-5.01K- 51.74% |
$568K - $679K
|
4.67K
$671K
|
|
|
Aug 13, 2025
Q2 2025
|
Russell Investments Group, Ltd.
|
BUY
|
- |
34.4K+ 16.57% |
$3.9M - $4.66M
|
242K
$34.8M
|
|
|
Aug 13, 2025
Q2 2025
|
Korea Investment Corp
Seoul, M5 |
SELL
|
- |
-4.9K- 7.38% |
$556K - $664K
|
61.5K
$8.83M
|
|
|
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 13, 2025
Q2 2025
|
Northwestern Mutual Wealth Management CO
|
BUY
|
- |
271+ 4.9% |
$30.7K - $36.7K
|
5.8K
$833K
|
|
|
Aug 13, 2025
Q2 2025
|
Hsbc Holdings PLC
London, X0 |
SELL
|
- |
-40.8K- 8.42% |
$4.62M - $5.52M
|
443K
$63.7M
|
|
|
Aug 13, 2025
Q2 2025
|
State Board Of Administration Of Florida Retirement System
|
BUY
|
- |
1.3K+ 0.97% |
$147K - $176K
|
135K
$19.4M
|
|
|
Aug 13, 2025
Q2 2025
|
Patient Capital Management, LLC
Baltimore, MD |
SELL
|
- |
-135K- 29.66% |
$15.3M - $18.3M
|
320K
$46M
|
|
|
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 13, 2025
Q2 2025
|
Capital Fund Management S.A.
Paris, I0 |
SELL
|
PUT |
-116K- 51.8% |
$13.2M - $15.8M
|
108K
$15.5M
|
|
|
Aug 13, 2025
Q2 2025
|
Groupama Asset Managment
Paris, I0 |
BUY
|
- |
986+ 12.43% |
$112K - $134K
|
8.92K
$1.28M
|