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© 2026 DataHeimdall. All rights reserved.Data sourced from SEC EDGAR public filings.
Insider Trades

MRK

Merck & Co., Inc.

Superinvestors

Institutional investors holding MRK

Consensus →
InvestorFundWeightSharesValueQuarter
Kahn Brothers GroupKahn Brothers Group8.02%430,103$45.3M2025Q4
Bill NygrenOakmark Select Fund – Harris Associates1.87%14,088,705$1.5B2025Q4
David TepperAppaloosa Management1.76%2,113,620$74.6M2011Q2
Sarah KettererCauseway Capital Management1.51%1,044,617$110.0M2025Q4
Kenneth FisherFisher Asset Management0.89%24,873,327$2.6B2025Q4
Prem WatsaFairfax Financial Holdings0.87%172,900$18.2M2025Q4
Mairs & PowerMairs & Power Growth Fund0.05%51,999$5.5M2025Q4
David KatzMatrix Asset Advisors0.03%2,862$301K2025Q4
Dodge & CoxDodge & Cox0.01%138,205$14.5M2025Q4
Richard PzenaPzena Investment Management0.00%3,324$350K2025Q4

Congressional Activity

Congressional data coming soon

Insider Activity

2

Total trades

$79K

Volume

2

Buys

0

Sells

Last trade: Mar 31, 2026

Insider Tradeslast 90 days

DateInsiderTypeValue
Mar 31, 2026Mary Ellen CoeBuy$30K
Mar 31, 2026Thomas H GlocerBuy$49K

Congressional Tradeslast 90 days

Congressional trade data is being sourced and will appear here shortly.