Biotechnology
NASDAQ NMS - GLOBAL MARKET
BIIB Biogen Inc
25 members of Congress traded BIIB 146 times between 2013 and 2025.
146
Total Trades
25
Politicians
50%
Buys
2013–2025
Active Period
Party Breakdown
Republican
42 trades
Democrat
104 trades
Democrats account for 71% of disclosed BIIB trades in Congress.
Activity by Year
2025
9
2024
8
2023
11
2022
15
2021
6
2020
11
2019
18
2018
15
2017
6
2016
11
2015
21
2014
12
2013
3
Disclosed Trades
Politician
Type
Date
Size
All data covers 2012 to end of 2025.
This is the historical record
BIIB is still being traded in Congress today.
Get alerted the moment a new BIIB trade is disclosed with insider score, conflict signals, and AI-written analysis.