# Merck & Co. Inc. (MRK) — Shares Outstanding

## Annual Shares Outstanding (USD)

| Year | Diluted Shares |
| --- | --- |
| 2025 | 2.51B |
| 2024 | 2.54B |
| 2023 | 2.55B |
| 2022 | 2.54B |
| 2021 | 2.54B |
| 2020 | 2.54B |
| 2019 | 2.58B |
| 2018 | 2.68B |
| 2017 | 2.75B |
| 2016 | 2.79B |
| 2010 | 0.00B |
| 2009 | 2.27B |
| 2008 | 2.14B |

## Quarterly Shares Outstanding (USD)

| Quarter | Diluted Shares |
| --- | --- |
| 2026-03-31 | 2.47B |
| 2025-09-30 | 2.50B |
| 2025-06-30 | 2.51B |
| 2025-03-31 | 2.53B |
| 2024-09-30 | 2.54B |
| 2024-06-30 | 2.54B |
| 2024-03-31 | 2.54B |
| 2023-09-30 | 2.55B |
| 2023-06-30 | 2.54B |
| 2023-03-31 | 2.55B |
| 2022-09-30 | 2.54B |
| 2022-06-30 | 2.54B |
| 2022-03-31 | 2.54B |
| 2021-09-30 | 2.54B |
| 2021-06-30 | 2.54B |
| 2021-03-31 | 2.54B |
| 2020-09-30 | 2.54B |
| 2020-06-30 | 2.54B |
| 2020-03-31 | 2.55B |
| 2019-09-30 | 2.57B |
| 2019-06-30 | 2.59B |
| 2019-03-31 | 2.60B |
| 2018-09-30 | 2.68B |
| 2018-06-30 | 2.70B |

Source: [MarketCapTrends](https://marketcaptrends.com/company/MRK/shares-outstanding)