BIOGEN INC

$BIIB
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Smart money positioned

17 of the Top-200 alpha managers hold $BIIB as of the latest 13F snapshot.

13F holders
12
Insider buys · 90d
0
Congress · 90d
3trades

Smart Money · top-200 alpha cohort

17 holders · Q1 2026

$BIIB is held by 17 managers from the Top-Performer cohort as of Q1 2026. Position weights range from 0.00% to 1.67%, with an average of 0.15% of portfolio. Largest holder: Lpwm LLC at 1.67%. A weekly Smart-Money commentary for this ticker has not been generated yet this batch — the table below shows the full cohort positioning.

01
Lpwm LLC
1.67% ↓ 0.7pp
α +19.0pts
02
Sectoral Asset Management Inc.
0.32% NEW
α +39.3pts
03
ADAR1 Capital Management, LLC
0.12% held
α +74.0pts
04
Wellington Management Group LLP
0.10% held
α +10.5pts
05
Erste Asset Management GmbH
0.09% held
α +33.4pts

Smart Money shows holdings from our Top-Performer cohort — the 200 highest-alpha manager_13f funds in our universe. Position weight (current quarter) and QoQ delta versus prior quarter. α is the manager's annual alpha vs benchmark.

Institutional holders

Top 10 of 12 · Source: 13F-HR
01
Vanguard Group Inc.
0.04% of portfolio
17,447,092 sh
02
State Street
0.05% of portfolio
7,167,922 sh
03
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
0.05% of portfolio
1,377,568 sh
04
Citigroup Inc.
0.06% of portfolio
500,507 sh
05
Renaissance Technologies
0.06% of portfolio
203,396 sh
06
Citadel
0.02% of portfolio
138,093 sh
07
Erste Asset Management GmbH
0.11% of portfolio
66,677 sh
08
ADAR1 Capital Management, LLC
0.12% of portfolio
11,000 sh
09
Two Sigma
—
9,444 sh
10
WINTON GROUP Ltd
0.02% of portfolio
3,297 sh
See all 12 13F holders · Pro →

Insider activity · last 90 days

46 transactions · 19 filers
09 Jun 2026
Hawkins William A —
· GRANT
1,505
—
A
09 Jun 2026
Rowinsky Eric K —
· GRANT
1,505
—
A
09 Jun 2026
Sherwin Stephen A —
· GRANT
1,505
—
A
09 Jun 2026
Mantas Jesus B —
· GRANT
1,505
—
A
09 Jun 2026
Langer Susan —
· GRANT
1,505
—
A
09 Jun 2026
Patolawala Monish D —
· GRANT
1,505
—
A
09 Jun 2026
Minor Lloyd —
· GRANT
1,505
—
A
09 Jun 2026
Pangalos Menelas N —
· EX/ACQ
2,370
—
M
09 Jun 2026
Pangalos Menelas N —
· GRANT
1,505
—
A
09 Jun 2026
Pangalos Menelas N —
· EX/ACQ
2,370
—
M
09 Jun 2026
Freire Maria C —
· GRANT
2,005
—
A
01 May 2026
Keeney Adam —
· EX/ACQ
939
—
M

Transaction codes: P open-market purchase · S sale · M option exercise · A grant · F tax-withhold sale. Insider names link to each individual's expert page.

Congress trades · last 90 days

4 disclosures · STOCK Act
Maria Elvira Salazar
House · Florida · Traded May 11
BOUGHT
$BIIBBiogen Inc. - Common Stock
—
Jun 8STOCK
Maria Elvira Salazar
House · Florida · Traded May 12
BOUGHT
$BIIBBiogen Inc. - Common Stock
$1K–$15K
Jun 8STOCK
Maria Elvira Salazar
House · Florida · Traded May 11
BOUGHT
$BIIBBiogen Inc. - Common Stock
$1K–$15K
Jun 8STOCK
Gilbert Cisneros
Traded Jan 30
BOUGHT
$BIIBBiogen Inc. - Common Stock
$1K–$15K
Feb 13STOCK

Convergence · $BIIB

Pattern cards reflect public SEC EDGAR and Congressional filing data only. Detection uses filing dates; trade execution dates may differ. Past convergence patterns do not predict future returns. Nothing here is investment advice.

Source data: SEC EDGAR · 13F-HR · Form 4 · U.S. House Clerk PTR (disclosures-clerk.house.gov) · Senate eFD (senate.gov) · Last refreshed 13:36 UTC.