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Merck & Co., Inc.
MRK - Company ID 0000310158
Market cap$360.96 B
Rank#30
Filings1,000
Market capitalization of Merck & Co., Inc.
As of 2026-11-06, Merck & Co., Inc. (MRK) has a market capitalization of $360.96 B, making it the #30 most valuable US-listed company.
Recent market cap readings
| Date | Market cap |
|---|---|
| 2026-11-06 | $360.96 B |
| 2026-11-05 | $362.24 B |
| 2026-11-04 | $366.25 B |
| 2026-11-03 | $355.86 B |
| 2026-11-02 | $366.03 B |
| 2026-11-01 | $369.29 B |
| 2026-10-31 | $369.29 B |
| 2026-10-30 | $371.25 B |
| 2026-10-29 | $361.41 B |
| 2026-10-28 | $346.62 B |
| 2026-10-27 | $350.32 B |
| 2026-10-26 | $347.28 B |
Market Cap of similar companies
Frequently asked questions
What is Merck & Co., Inc.'s market cap?
As of 2026-11-06, Merck & Co., Inc. (MRK) has a market capitalization of $360.96 B, making it the #30 most valuable US-listed company.
Where does Merck & Co., Inc. rank by market cap?
Merck & Co., Inc. is the #30 largest US-listed company by market capitalization.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.