Merck & Co., Inc.: basic weighted-average shares
Merck & Co. basic weighted-average shares: 2.50 billion shares for the year ending 2025-12-31, down 1.2% on the year. 18 values since 2008 from SEC filings.
All Merck & Co., Inc. financial histories
At a glance
Merck & Co. reported basic weighted-average shares of 2.50 billion shares for the year ending 2025-12-31, down 1.2% from 2.53 billion shares a year earlier. From 2008 to 2025 it grew at a compound 0.9% a year, from 2.14 billion shares to 2.50 billion shares. Across the last five reported years it ranged from 2.50 billion shares (2025-12-31) to 2.54 billion shares (2023-12-31).
Computed from the values in the table below, in shares; each links to the filing it came from.
What this measure means
Time-weighted shares used for basic earnings per share. This denominator differs from shares outstanding at a single reporting date.
Exact concept: us-gaap:WeightedAverageNumberOfSharesOutstandingBasic. Each value covers an annual-duration reporting interval, shown with both start and end dates. Different units remain separate; no currency conversion or interpolation is applied.
Coverage of this history
Selected reporting periods run from 2008-01-01 to 2025-12-31. The SEC response was captured on 2026-09-19.
Selected filing history
| Period start | Period end | Value | Unit | Filed | Source filing |
|---|---|---|---|---|---|
| 2025-01-01 | 2025-12-31 | 2,502,000,000 | shares | 2026-02-24 | 10-K · 0000310158-26-000063 SEC |
| 2024-01-01 | 2024-12-31 | 2,532,000,000 | shares | 2026-02-24 | 10-K · 0000310158-26-000063 SEC |
| 2023-01-01 | 2023-12-31 | 2,537,000,000 | shares | 2026-02-24 | 10-K · 0000310158-26-000063 SEC |
| 2022-01-01 | 2022-12-31 | 2,532,000,000 | shares | 2025-02-25 | 10-K · 0001628280-25-007732 SEC |
| 2021-01-01 | 2021-12-31 | 2,530,000,000 | shares | 2024-02-26 | 10-K · 0001628280-24-006850 SEC |
| 2020-01-01 | 2020-12-31 | 2,530,000,000 | shares | 2023-02-24 | 10-K · 0001628280-23-005061 SEC |
| 2019-01-01 | 2019-12-31 | 2,565,000,000 | shares | 2022-02-25 | 10-K · 0000310158-22-000003 SEC |
| 2018-01-01 | 2018-12-31 | 2,664,000,000 | shares | 2021-02-25 | 10-K · 0000310158-21-000004 SEC |
| 2017-01-01 | 2017-12-31 | 2,730,000,000 | shares | 2020-02-26 | 10-K · 0000310158-20-000005 SEC |
| 2016-01-01 | 2016-12-31 | 2,766,000,000 | shares | 2019-02-27 | 10-K · 0000310158-19-000014 SEC |
| 2015-01-01 | 2015-12-31 | 2,816,000,000 | shares | 2018-02-27 | 10-K · 0000310158-18-000005 SEC |
| 2014-01-01 | 2014-12-31 | 2,894,000,000 | shares | 2017-02-28 | 10-K · 0000310158-17-000010 SEC |
| 2013-01-01 | 2013-12-31 | 2,963,000,000 | shares | 2016-02-26 | 10-K · 0000310158-16-000063 SEC |
| 2012-01-01 | 2012-12-31 | 3,041,000,000 | shares | 2015-02-27 | 10-K · 0000310158-15-000005 SEC |
| 2011-01-01 | 2011-12-31 | 3,071,000,000 | shares | 2014-02-27 | 10-K · 0000310158-14-000009 SEC |
| 2010-01-01 | 2010-12-31 | 3,095 | shares | 2013-02-28 | 10-K · 0001193125-13-084618 SEC |
| 2009-01-01 | 2009-12-31 | 2,268,000,000 | shares | 2012-02-28 | 10-K · 0001193125-12-084319 SEC |
| 2008-01-01 | 2008-12-31 | 2,136,000,000 | shares | 2011-02-28 | 10-K · 0000950123-11-019286 SEC |
Related Merck & Co., Inc. histories
Inspect the source
- Entity
- Merck & Co., Inc. / CIK 0000310158
- Captured
- SEC response SHA-256
de2e92301923703e6aee247c42c0cf2f1b741118ebca221fbaa5dc0e47644bd7
Current SEC company facts · Download the original response snapshot (gzip) · Download the selected JSON
Latest-filed annual-report facts per unit and reporting period at capture time. Duration facts cover 300 to 400 days. This selection can include restatements and is not a point-in-time backtest dataset. Missing concepts are omitted, never zero-filled. Values retain original units and are not currency converted. Extended concepts require compatible unit shapes and at least three reporting ends with changing values within one unit. Constant or incompatible added histories are omitted.
Public company accounting reference, not market prices, returns, an investment recommendation, or ALPHAC performance. Validate a separately constructed return series with the validation API; accounting values are not returns.
Use this in research
A financial period ends before its results become public. Use the filing date as a minimum availability boundary, inspect amendments, and retain the original filing vintage when testing historical signals. This latest-filed selection can contain information unavailable at the time.
These pages do not supply prices, total-return histories, corporate-action adjustments or a tradable universe. Build those inputs separately before evaluating a strategy. A profitable backtest can still reflect selection bias or costs that were left out.
Research methodology · Execution and cost assumptions · Check backtest overfitting
Build with the open-source tools
Use these accounting records as inspectable inputs. When you have constructed a return series, the validation tools can help test its statistical evidence and preserve the result with its limitations.
- Get an API key and run your first validation
- Connect the MCP server to your coding assistant
- Inspect the ALPHAC engine on GitHub
- Read the MCP server source and integration examples
The MCP server is free and MIT-licensed: npx -y canli-mcp. If these records help your research, a star on GitHub helps other researchers find them.
Read the published dataset with Python
import json
from urllib.request import urlopen
with urlopen("https://canlicapital.com/company-data/0000310158.json") as response:
record = json.load(response)
print(record["fetched_at"])
print(record["policy"])
for concept in record["concepts"]:
print(concept["tag"], next(iter(concept["observations"])))