BIIB · Healthcare
Biogen Inc
21/100
Smart-money confidence1 of 3 sources positive
Bottom band — money moving out
No standout activity across the feeds we track.
What this band has actually done: stocks scoring 0–25 beat the S&P 500 over the next three months 39.9% of the time, across 100,496 cases since 2015. That is below a coin flip — and so is every other band, because the median stock loses to a cap-weighted index. How we measured this
Hedge funds
28
Congress
No data
Insiders
No data
Cross-source blend of hedge-fund breadth, Congress trades, and insider Form 4s. ·
how the score works
Market cap
$33.6B
Industry
Drug Manufacturers - General
Sector
Healthcare
Exchange
NasdaqGS
About BIOGEN INC
Biogen Inc. discovers, develops, manufactures, and delivers therapies in the United States, Europe, Germany, Asia, and internationally. The company provides TECFIDERA, VUMERITY, AVONEX, PLEGRIDY, and TYSABRI for multiple sclerosis (MS); SPINRAZA for spinal muscular atrophy; SKYCLARYS to treat Friedreich's Ataxia; QALSODY for treating amyotrophic lateral sclerosis; FUMADERM to treat plaque psoriasis; BENEPALI, an etanercept biosimilar referencing ENBREL; IMRALDI, an adalimumab biosimilar referencing HUMIRA; FLIXABI, an infliximab biosimilar referencing REMICADE. It offers LEQEMBI for the…
Who's behind the signal
Every informed buyer we can see on BIIB, across all three feeds.
Hedge funds · 6
D.E. Shaw & Co
New position
Citadel Advisors
Increased +203%
AQR Capital Management
Unchanged
Gotham Asset Mgmt (Greenblatt)
Decreased −6%
Point72 (Steve Cohen)
Decreased −89%
Renaissance Technologies
Decreased −62%
Congress · 15
Kevin Hern
sold
Gilbert Ray Cisneros, Jr.
bought
Maria Elvira Salazar
sold
Alan Armstrong
bought
Robert P. Bresnahan, Jr.
bought
Daniel S. Goldman
sold
Shri Thanedar
sold
Kathy E. Manning
sold
+7 more in the full record below ↓
Insiders
No significant Form 4 insider activity in the window.
Congressional trades · 45 on record
Disclosures from 2014-03-27 to 2026-08-18
| Trade date | Member | Chamber | Action | Amount |
|---|---|---|---|---|
| 2026-08-18 | Kevin Hern · R-OK | House | Sold | $1,001 - $15,000 |
| 2026-06-05 | Gilbert Ray Cisneros, Jr. · D-CA | House | Bought | $1,001 - $15,000 |
| 2026-06-02 | Maria Elvira Salazar · R-FL | House | Sold | $15,001 - $50,000 |
| 2026-05-12 | Maria Elvira Salazar · R-FL | House | Bought | $1,001 - $15,000 |
| 2026-05-11 | Maria Elvira Salazar · R-FL | House | Bought | $1,001 - $15,000 |
| 2026-05-11 | Maria Elvira Salazar · R-FL | House | Bought | $50,001 - $100,000 |
| 2026-03-27 | Alan Armstrong · R-OK | Senate | Bought | $1,001 - $15,000 |
| 2026-01-30 | Gilbert Ray Cisneros, Jr. · D-CA | House | Bought | $1,001 - $15,000 |
| 2025-05-15 | Robert P. Bresnahan, Jr. · R-PA | House | Bought | $1,001 - $15,000 |
| 2025-04-08 | Robert P. Bresnahan, Jr. · R-PA | House | Sold | $1,001 - $15,000 |
Show the other 35
| Trade date | Member | Chamber | Action | Amount |
|---|---|---|---|---|
| 2025-02-25 | Robert P. Bresnahan, Jr. · R-PA | House | Bought | $1,001 - $15,000 |
| 2023-03-06 | Daniel S. Goldman · D-NY | House | Sold | $1,001 - $15,000 |
| 2023-01-23 | Shri Thanedar · D-MI | House | Sold | $15,001 - $50,000 |
| 2022-08-03 | Kathy E. Manning · D-NC | House | Sold | $1,001 - $15,000 |
| 2022-07-20 | Kathy E. Manning · D-NC | House | Bought | $1,001 - $15,000 |
| 2022-03-17 | Josh Gottheimer · D-NJ | House | Sold | $1,001 - $15,000 |
| 2022-01-14 | Kathy E. Manning · D-NC | House | Sold | $1,001 - $15,000 |
| 2022-01-10 | Josh Gottheimer · D-NJ | House | Bought | $1,001 - $15,000 |
| 2021-12-09 | Josh Gottheimer · D-NJ | House | Sold | $1,001 - $15,000 |
| 2021-10-18 | Josh Gottheimer · D-NJ | House | Bought | $1,001 - $15,000 |
| 2021-09-15 | Josh Gottheimer · D-NJ | House | Sold | $1,001 - $15,000 |
| 2021-06-08 | Josh Gottheimer · D-NJ | House | Bought | $1,001 - $15,000 |
| 2021-02-16 | Peter Meijer · R-MI | House | Sold | $15,001 - $50,000 |
| 2021-01-04 | Chris Jacobs · R-NY | House | Sold | $1,001 - $15,000 |
| 2020-12-22 | Gilbert Ray Cisneros, Jr. · D-CA | House | Sold | $1,001 - $15,000 |
| 2020-09-16 | Gilbert Ray Cisneros, Jr. · D-CA | House | Bought | $1,001 - $15,000 |
| 2020-07-07 | Josh Gottheimer · D-NJ | House | Bought | $1,001 - $15,000 |
| 2020-04-29 | Gilbert Ray Cisneros, Jr. · D-CA | House | Bought | $1,001 - $15,000 |
| 2020-03-18 | Gilbert Ray Cisneros, Jr. · D-CA | House | Sold | $1,001 - $15,000 |
| 2020-02-07 | Gilbert Ray Cisneros, Jr. · D-CA | House | Bought | $1,001 - $15,000 |
| 2019-06-24 | Donna E. Shalala · D-FL | House | Sold | $1,001 - $15,000 |
| 2019-03-22 | Sheldon Whitehouse · D-RI | Senate | Sold | $1,001 - $15,000 |
| 2018-01-08 | Sheldon Whitehouse · D-RI | Senate | Sold | $1,001 - $15,000 |
| 2016-12-23 | Sheldon Whitehouse · D-RI | Senate | Sold | $1,001 - $15,000 |
| 2016-12-13 | Sheldon Whitehouse · D-RI | Senate | Sold | $15,001 - $50,000 |
| 2016-07-21 | James M. Inhofe · R-OK | Senate | Sold | $50,001 - $100,000 |
| 2015-08-28 | Sheldon Whitehouse · D-RI | Senate | Bought | $1,001 - $15,000 |
| 2015-08-10 | Sheldon Whitehouse · D-RI | Senate | Bought | $1,001 - $15,000 |
| 2015-08-04 | Sheldon Whitehouse · D-RI | Senate | Bought | $1,001 - $15,000 |
| 2015-07-10 | Sheldon Whitehouse · D-RI | Senate | Bought | $1,001 - $15,000 |
| 2015-07-09 | James M. Inhofe · R-OK | Senate | Bought | $15,001 - $50,000 |
| 2015-05-07 | Sheldon Whitehouse · D-RI | Senate | Bought | $15,001 - $50,000 |
| 2015-04-07 | Sheldon Whitehouse · D-RI | Senate | Bought | $1,001 - $15,000 |
| 2014-07-23 | Susan M. Collins · R-ME | Senate | Sold | $1,001 - $15,000 |
| 2014-03-27 | Susan M. Collins · R-ME | Senate | Sold | $1,001 - $15,000 |
Not a model pick — but on our radar.
BIOGEN INC isn't in the top-10 model right now, but 6 tracked investors hold it. Everything below is real signal from public filings — treat this as a watch candidate, not a conviction call.
6
Investors
1
New positions
1
Increasing
3
Decreasing
1
Unchanged
Price History
Loading price data...
A member of Congress bought
A member sold
Return:
High:
Low:
Markers sit on the transaction date the member disclosed, snapped to the nearest close on the chart. They are not the date the public found out — that came later, and the gap is its own page. Every marker is listed by name in the table above.
Who's Holding This Stock
Position sizes and recent activity from tracked institutional investors
Trust weight: 1.0×
% of portfolio
0.0%
Position change
NEW
0.0% of D.E. Shaw & Co's portfolio
Trust weight: 1.0×
% of portfolio
0.1%
Position change
+203%
0.1% of Citadel Advisors's portfolio
Trust weight: 1.0×
% of portfolio
0.1%
Position change
—
0.1% of AQR Capital Management's portfolio
Trust weight: 1.1×
% of portfolio
0.1%
Position change
−6%
0.1% of Gotham Asset Mgmt's portfolio
Trust weight: 1.1×
% of portfolio
0.0%
Position change
−89%
0.0% of Point72's portfolio
Trust weight: 1.0×
% of portfolio
0.0%
Position change
−62%
0.0% of Renaissance Technologies's portfolio
Portfolio Allocation
How much of each investor's portfolio is allocated to BIOGEN INC
⚠ Disclaimer: This page is for informational purposes only. Holdings data from SEC EDGAR 13F filings, delayed up to 135 days. Not a recommendation to buy or sell BIOGEN INC or any security.
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