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Congress Stock Tracker

Tracking congressional stock trades from public STOCK Act Periodic Transaction Reports (PTRs) filed by members of the US House and Senate.

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© 2026 Congress Stock Tracker. Data from public STOCK Act filings.For informational purposes only. Not financial advice.
Stocks
Merck & Co., Inc.

Merck & Co., Inc.MRK

NYSEHealthcarePharmaceuticals$115.62-0.25%

A global pharmaceutical company focused on prescription medicines, vaccines, and biologic therapies, Merck generates a significant share of revenue from its oncology franchise, led by blockbuster immunotherapy Keytruda. The company also maintains a sizable vaccines business and an expanding pipeline in oncology, infectious diseases, and cardiometabolic conditions. Investors monitor patent expiration timelines, clinical trial outcomes, and capital allocation as key drivers of long-term earnings growth.

Market Cap: $285.9B52W Range: $73.31 – $125.14

Congressional Interest in Merck & Co., Inc. (MRK)

20 members of Congress have disclosed 50 trades in Merck & Co., Inc. (MRK), a Healthcare company. The buy/sell breakdown shows 29 purchases versus 21 sales, indicating net buying interest from lawmakers. All data is sourced from STOCK Act periodic transaction reports filed with Congress.

Total Disclosures
50
Unique Politicians
20
Buys
29
Sells
21

Who in Congress Is Trading MRK?

DatePoliticianTypeAmountSecurity
2017-09-14Francis Rooneybuy$1K – $15KStock
2017-09-12David A Perdue , Jrbuy$1K – $15KStock

Related

All stocks traded by CongressFull trade feedMost active tradersAbout the STOCK ActReport missing trade
2017-09-11David A Perdue , Jrbuy$1K – $15KStock
2017-09-08David A Perdue , Jrbuy$15K – $50KStock
2017-09-06JAMES B. RENACCIbuy$1K – $15KStock
2017-09-05Shelley M Capitobuy$1K – $15KStock
2017-08-29MICHAEL T. MCCAULsell$1K – $15KStock
2017-08-02JAMES B. RENACCIsell$1K – $15KStock
2017-07-20MICHAEL T. MCCAULbuy$15K – $50KStock
2017-07-17John Rutherfordbuy$1K – $15KStock
2017-06-15Patty Murraysell$1K – $15KStock
2017-06-15ZOE LOFGRENbuy$1K – $15KStock
2017-06-12David A Perdue , Jrbuy$1K – $15KStock
2017-05-30MICHAEL T. MCCAULsell$1K – $15KStock
2017-05-24MICHAEL T. MCCAULsell$1K – $15KStock
2017-05-11MICHAEL T. MCCAULsell$15K – $50KStock
2017-05-09JAMES B. RENACCIsell$15K – $50KStock
2017-05-04MICHAEL T. MCCAULbuy$1K – $15KStock
2017-03-22Lois Frankelsell$1K – $15KStock
2017-03-17Virginia Foxxbuy$15K – $50KStock
2017-03-16Patty Murraybuy$1K – $15KStock
2017-03-16Lois Frankelsell$1K – $15KStock
2017-03-14Rohit Khannasell$1K – $15KStock
2017-03-08Lois Frankelsell$1K – $15KStock
2017-02-14KATHY CASTORsell$1K – $15KStock
2017-02-07Francis Rooneybuy$1K – $15KStock
2017-01-26JAMES B. RENACCIbuy$1K – $15KStock
2017-01-25John Hoevensell$50K – $100KStock
2017-01-17Francis Rooneysell$1K – $15KStock
2017-01-17Francis Rooneybuy$1K – $15KStock
2017-01-13Francis Rooneybuy$1K – $15KStock
2017-01-04Francis Rooneybuy$1K – $15KStock
2016-12-23KENNY MARCHANTbuy$15K – $50KStock
2016-10-06MICHAEL T. MCCAULbuy$50K – $100KStock
2016-10-04FRED UPTONsell$1K – $15KStock
2016-09-26MICHAEL T. MCCAULsell$1K – $15KStock
2016-08-17Lois Frankelsell$1K – $15KStock
2016-08-04Kurt Schraderbuy$1K – $15KStock
2016-07-01FRED UPTONsell$15K – $50KStock
2016-05-01Vern Buchananbuy$1K – $15KStock
2016-04-01KENNY MARCHANTbuy$1K – $15KStock
2016-03-16E. Scott Rigellbuy$15K – $50KStock
2016-03-14Harold Dallas Rogersbuy$1K – $15KStock
2016-03-08MICHAEL T. MCCAULsell$1K – $15KStock
2016-02-12KATHY CASTORbuy$1K – $15KStock
2016-02-08MICHAEL T. MCCAULsell$1K – $15KStock
2016-02-03MICHAEL T. MCCAULbuy$1K – $15KStock
2016-01-28John Hoevenbuy$50K – $100KStock
2016-01-26Kurt Schradersell$1K – $15KStock
2016-01-21ALAN S. LOWENTHALbuy$15K – $50KStock
Francis Rooneybuy
2017-09-14$1K – $15K
Stock
David A Perdue , Jrbuy
2017-09-12$1K – $15K
Stock
David A Perdue , Jrbuy
2017-09-11$1K – $15K
Stock
David A Perdue , Jrbuy
2017-09-08$15K – $50K
Stock
JAMES B. RENACCIbuy
2017-09-06$1K – $15K
Stock
Shelley M Capitobuy
2017-09-05$1K – $15K
Stock
MICHAEL T. MCCAULsell
2017-08-29$1K – $15K
Stock
JAMES B. RENACCIsell
2017-08-02$1K – $15K
Stock
MICHAEL T. MCCAULbuy
2017-07-20$15K – $50K
Stock
John Rutherfordbuy
2017-07-17$1K – $15K
Stock
Patty Murraysell
2017-06-15$1K – $15K
Stock
ZOE LOFGRENbuy
2017-06-15$1K – $15K
Stock
David A Perdue , Jrbuy
2017-06-12$1K – $15K
Stock
MICHAEL T. MCCAULsell
2017-05-30$1K – $15K
Stock
MICHAEL T. MCCAULsell
2017-05-24$1K – $15K
Stock
MICHAEL T. MCCAULsell
2017-05-11$15K – $50K
Stock
JAMES B. RENACCIsell
2017-05-09$15K – $50K
Stock
MICHAEL T. MCCAULbuy
2017-05-04$1K – $15K
Stock
Lois Frankelsell
2017-03-22$1K – $15K
Stock
Virginia Foxxbuy
2017-03-17$15K – $50K
Stock
Patty Murraybuy
2017-03-16$1K – $15K
Stock
Lois Frankelsell
2017-03-16$1K – $15K
Stock
Rohit Khannasell
2017-03-14$1K – $15K
Stock
Lois Frankelsell
2017-03-08$1K – $15K
Stock
KATHY CASTORsell
2017-02-14$1K – $15K
Stock
Francis Rooneybuy
2017-02-07$1K – $15K
Stock
JAMES B. RENACCIbuy
2017-01-26$1K – $15K
Stock
John Hoevensell
2017-01-25$50K – $100K
Stock
Francis Rooneysell
2017-01-17$1K – $15K
Stock
Francis Rooneybuy
2017-01-17$1K – $15K
Stock
Francis Rooneybuy
2017-01-13$1K – $15K
Stock
Francis Rooneybuy
2017-01-04$1K – $15K
Stock
KENNY MARCHANTbuy
2016-12-23$15K – $50K
Stock
MICHAEL T. MCCAULbuy
2016-10-06$50K – $100K
Stock
FRED UPTONsell
2016-10-04$1K – $15K
Stock
MICHAEL T. MCCAULsell
2016-09-26$1K – $15K
Stock
Lois Frankelsell
2016-08-17$1K – $15K
Stock
Kurt Schraderbuy
2016-08-04$1K – $15K
Stock
FRED UPTONsell
2016-07-01$15K – $50K
Stock
Vern Buchananbuy
2016-05-01$1K – $15K
Stock
KENNY MARCHANTbuy
2016-04-01$1K – $15K
Stock
E. Scott Rigellbuy
2016-03-16$15K – $50K
Stock
Harold Dallas Rogersbuy
2016-03-14$1K – $15K
Stock
MICHAEL T. MCCAULsell
2016-03-08$1K – $15K
Stock
KATHY CASTORbuy
2016-02-12$1K – $15K
Stock
MICHAEL T. MCCAULsell
2016-02-08$1K – $15K
Stock
MICHAEL T. MCCAULbuy
2016-02-03$1K – $15K
Stock
John Hoevenbuy
2016-01-28$50K – $100K
Stock
Kurt Schradersell
2016-01-26$1K – $15K
Stock
ALAN S. LOWENTHALbuy
2016-01-21$15K – $50K
Stock
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