Market Cap for Williams Companies (WMB)
According to Williams Companies's latest reported financial statements, the company's latest reported market cap is $73.45B USD. Market capitalization is the total dollar value of all outstanding shares — shares outstanding × stock price — and the standard measure of a company's equity value. On this page, historical market cap snaps filing-period share counts to closing prices on or before each statement date (not intraday tick data).
Headline figure above is from the reporting period ending (reported ). Chart and table below cover the full reported history back to .
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Latest period
$73.45B
YoY change
+22.0%
5Y CAGR
+23.1%
Peak year (2026)
$89.52B
Latest annual
$89.52B
Market Cap history chart for Williams Companies (WMB) from 1985 to 2026
Market Cap history table for Williams Companies (WMB) from 1985 to 2026
| Fiscal year | Period ended | Reported | Market Cap | YoY |
|---|---|---|---|---|
| 2026 | $89.52B | +22.0% | ||
| 2025 | $73.39B | +10.9% | ||
| 2024 | $66.19B | +55.4% | ||
| 2023 | $42.59B | +5.9% | ||
| 2022 | $40.23B | +26.8% | ||
| 2021 | $31.72B | +30.2% | ||
| 2020 | $24.36B | -15.4% | ||
| 2019 | $28.80B | +34.1% | ||
| 2018 | $21.47B | -15.0% | ||
| 2017 | $25.26B | +8.1% | ||
| 2016 | $23.38B | +21.4% | ||
| 2015 | $19.26B | -42.6% | ||
| 2014 | $33.57B | +26.7% | ||
| 2013 | $26.50B | +18.9% | ||
| 2012 | $22.30B | +42.3% | ||
| 2011 | $15.67B | +36.6% | ||
| 2010 | $11.47B | +16.3% | ||
| 2009 | $9.86B | +44.8% | ||
| 2008 | $6.81B | -60.7% | ||
| 2007 | $17.31B | +37.3% | ||
| 2006 | $12.61B | +13.2% | ||
| 2005 | $11.14B | +63.2% | ||
| 2004 | $6.82B | +69.6% | ||
| 2003 | $4.02B | +262.8% | ||
| 2002 | $1.11B | -89.1% | ||
| 2001 | $10.18B | -24.1% | ||
| 2000 | $13.41B | +32.7% | ||
| 1999 | $10.10B | +0.6% | ||
| 1998 | $10.04B | +45.2% | ||
| 1997 | $6.92B | +20.5% | ||
| 1996 | $5.74B | +67.6% | ||
| 1995 | $3.42B | +67.6% | ||
| 1994 | $2.04B | +9.8% | ||
| 1993 | $1.86B | +41.2% | ||
| 1992 | $1.32B | +11.8% | ||
| 1991 | $1.18B | +50.6% | ||
| 1990 | $782.38M | -27.5% | ||
| 1989 | $1.08B | +21.4% | ||
| 1988 | $889.00M | +45.0% | ||
| 1987 | $613.20M | +3.5% | ||
| 1986 | $592.60M | -19.1% | ||
| 1985 | $732.73M | — |
Market Cap values are taken from Williams Companies's reported income statements (10-Q quarterly and 10-K annual filings with the U.S. Securities and Exchange Commission). Each row shows the period end date and the date the filing was reported; YoY compares each figure to the same period one year earlier. Amounts are in USD as filed.
Analysis
As of the 2026 fiscal year, Williams Companies (WMB) reported market cap of $89.52B – grew 22.0% year-over-year.
Williams Companies market cap compound annual growth for the 2021–2026 (5 years) window is +23.1%, sustaining 6 straight years of year-over-year growth.
$89.52B stands as the all-time-high annual market cap, posted in 2026, against a low of $592.60M during 1986.
Within Energy, Williams Companies (WMB) ranks 5th among 8 peers we track. The peer median for market cap is $99.63B.
Williams Companies Market Cap by Year
Williams Companies Market Cap 2026: $89.52B
Williams Companies market cap in 2026 was $89.52B, grew 22.0% from 2025. This figure represents the highest annual value in the available history.
Williams Companies Market Cap 2025: $73.39B
Williams Companies market cap in 2025 was $73.39B, grew 10.9% from 2024.
Williams Companies Market Cap 2024: $66.19B
Williams Companies market cap in 2024 was $66.19B, surged 55.4% from 2023.
Williams Companies Market Cap 2023: $42.59B
Williams Companies market cap in 2023 was $42.59B, grew 5.9% from 2022.
Williams Companies Market Cap 2022: $40.23B
Williams Companies market cap in 2022 was $40.23B.
See more financial history for Williams Companies (WMB).
Sector peers — Market Cap
Companies in the same sector as Williams Companies, ranked by their latest market cap.
| Company | Market Cap | Sector |
|---|---|---|
| Exxon Mobil Corporation (XOM) | $625.81B | Energy |
| Chevron Corporation (CVX) | $375.85B | Energy |
| ConocoPhillips (COP) | $151.53B | Energy |
| Enbridge Inc. (ENB) | $115.72B | Energy |
| SLB N.V. (SLB) | $83.54B | Energy |
| EOG Resources, Inc. (EOG) | $72.74B | Energy |
| Valero Energy Corporation (VLO) | $71.85B | Energy |
| Kinder Morgan, Inc. (KMI) | $70.73B | Energy |
Frequently asked questions
What is Williams Companies's market cap?
- Latest reported market cap for Williams Companies (WMB) is $73.45B (period ending December 31, 2025).
How has Williams Companies market cap changed year-over-year?
- Williams Companies (WMB) market cap changed +22.0% year-over-year on the latest annual filing.
What is the long-term growth rate of Williams Companies market cap?
- Williams Companies (WMB) market cap compound annual growth rate is +23.1% over the most recent 5 years available.
When did Williams Companies market cap hit its highest annual value?
- Williams Companies market cap reached its highest annual value of $89.52B in 2026.
What was Williams Companies market cap in 2025?
- Williams Companies (WMB) market cap in 2025 was $73.39B.
What was Williams Companies market cap in 2026?
- Williams Companies (WMB) market cap in 2026 was $89.52B.
Metrics overview
Pick a metric for charts, filings, and peers — each row shows the latest TTM or annual value with year-over-year change.
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