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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 manufacturer focused on prescription medicines, vaccines, and biologic therapies, with major franchises in oncology, infectious diseases, and animal health. Its cancer immunotherapy Keytruda is one of the world’s highest‑selling drugs and a primary driver of revenue growth. I...

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

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

6 members of Congress have disclosed 9 trades in Merck & Co., Inc. (MRK), a Healthcare company. The buy/sell breakdown shows 4 purchases versus 5 sales, indicating net selling pressure from lawmakers. All data is sourced from STOCK Act periodic transaction reports filed with Congress.

Total Disclosures
9
Unique Politicians
6
Buys
4
Sells
5

Who in Congress Is Trading MRK?

DatePoliticianTypeAmountSecurity
2014-04-24Lois Frankelbuy$1K – $15KStock
2014-04-23F. JAMES SENSENBRENNERsell$15K – $50KStock

Related

All stocks traded by CongressFull trade feedMost active tradersAbout the STOCK ActReport missing trade
2014-04-08Ed Whitfieldsell$1K – $15KStock
2014-03-19MICHAEL T. MCCAULsell$1K – $15KStock
2014-02-27Katherine M. Clarkbuy$1K – $15KStock
2014-02-07John A. Boehnerbuy$15K – $50KStock
2014-01-23Katherine M. Clarkbuy$1K – $15KStock
2014-01-14F. JAMES SENSENBRENNERsell$15K – $50KStock
2012-08-14F. JAMES SENSENBRENNERsell$15K – $50KStock
Lois Frankelbuy
2014-04-24$1K – $15K
Stock
F. JAMES SENSENBRENNERsell
2014-04-23$15K – $50K
Stock
Ed Whitfieldsell
2014-04-08$1K – $15K
Stock
MICHAEL T. MCCAULsell
2014-03-19$1K – $15K
Stock
Katherine M. Clarkbuy
2014-02-27$1K – $15K
Stock
John A. Boehnerbuy
2014-02-07$15K – $50K
Stock
Katherine M. Clarkbuy
2014-01-23$1K – $15K
Stock
F. JAMES SENSENBRENNERsell
2014-01-14$15K – $50K
Stock
F. JAMES SENSENBRENNERsell
2012-08-14$15K – $50K
Stock
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