Healthcare
NEW YORK STOCK EXCHANGE, INC.
MRK Merck & Co Inc
65 members of Congress traded MRK 362 times between 2014 and 2025.
362
Total Trades
65
Politicians
51%
Buys
2014–2025
Active Period
MRK Trading by Party
Republican
137 trades
Democrat
225 trades
Democrats account for 62% of disclosed MRK trades in Congress.
MRK Congressional Trading Activity by Year
2025
52
2024
24
2023
44
2022
31
2021
27
2020
42
2019
20
2018
22
2017
53
2016
10
2015
16
2014
21
Complete MRK Trade History
Politician
Type
Date
Size
All data covers 2012 to end of 2025.
This is the historical record
MRK is still being traded in Congress today.
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