Merck & Co. Inc. trailing returns
Merck & Co. Inc.'s 10-year return is +12.6% a year (CAGR) (+228.8% cumulative). How Merck & Co. Inc. (MRK) has performed over the last day, week, month and year, over 5, 10 and 20 years, and since inception, through October 2, 2026 — cumulative and annualized, with dividends on or off.
Trailing returns by period#
To 2026-10-02. Annualized (CAGR) for windows of a year or more.
| Period | Path | Annualized | Cumulative |
|---|---|---|---|
| 1 day | — | +0.3% | |
| 5 days | — | -3.0% | |
| 1 month | — | -4.3% | |
| YTD | — | +39.9% | |
| 1 year | +65.9% | +65.9% | |
| 5 years | +15.6% | +106.6% | |
| 10 years | +12.6% | +228.8% | |
| 20 years | +10.4% | +626.5% | |
| Since inception (1970) | +10.3% | +25737.1% |
Growth of MRK
Actual index level (solid); dashed lines are each window's constant-rate path from start to today.
Methodology#
Trailing returns measure from the closest close about N years before the latest close (2026-10-02). Cumulative return is the total change over the window; annualized return is the compound annual growth rate (CAGR), shown for windows of a year or more. Total return reinvests dividends (from MRK's split- and dividend-adjusted closes); price return excludes them. See the year-by-year returns for the calendar breakdown. Past performance does not predict future returns; not investment advice.
FAQ#
- What is Merck & Co. Inc.'s 10-year return?
- Over the last 10 years, Merck & Co. Inc. (MRK) returned about +12.6% a year annualized (+228.8% cumulative total return).
- What is Merck & Co. Inc.'s 20-year annualized return?
- Over the last 20 years, Merck & Co. Inc. (MRK) compounded at about +10.4% a year (+626.5% cumulative).
- What is Merck & Co. Inc.'s return since inception?
- Since 1970, Merck & Co. Inc. (MRK) has compounded at about +10.3% a year — +25737.1% in total.