As of December 12, 2025, Phillips 66 had a market cap of $56.990 billion, which decreased by 1.38% compared to the previous trading day. Market capitalization, often referred to as market cap, represents the total value of a company's outstanding shares on the stock market and is a common measure of its overall size and valuation.
Data updated: Dec 12, 2025, 4:00 PM ET
Phillips 66 (PSX)
🌍 United States📈 NYSE🏭 Energy🏢 Oil, Gas & Consumable Fuels
Note: Each point on the chart represents the market capitalization at the end of the trading day. Source: Data compiled from EDGAR filings, Bloomberg and Yahoo Finance.
📈 Phillips 66 Market Cap History by Year and Month
Phillips 66 Market Cap History by Year and Month
Year / Month
Market Cap
% Change
2025
$56.990B
▲ 22.49%
$56.990B
▲ 3.28%
$55.180B
▲ 0.60%
$54.850B
▼ 0.22%
$54.970B
▲ 1.83%
$53.980B
▲ 8.09%
$49.940B
▲ 3.59%
$48.210B
▲ 4.26%
$46.240B
▲ 9.06%
$42.400B
▼ 15.76%
$50.330B
▼ 4.80%
$52.870B
▲ 10.01%
$48.060B
▲ 3.29%
2024
$46.528B
▼ 20.57%
$46.528B
▼ 15.91%
$55.332B
▲ 9.98%
$50.310B
▼ 7.33%
$54.288B
▼ 7.56%
$58.730B
▼ 3.55%
$60.894B
▲ 1.75%
$59.849B
▼ 0.66%
$60.248B
▼ 0.77%
$60.714B
▼ 12.50%
$69.384B
▲ 13.80%
$60.969B
▼ 1.25%
$61.739B
▲ 5.40%
2023
$58.576B
▲ 19.08%
$58.576B
▲ 3.30%
$56.706B
▲ 12.99%
$50.186B
▼ 6.20%
$53.502B
▲ 5.25%
$50.834B
▲ 2.34%
$49.672B
▲ 16.95%
$42.472B
▲ 1.04%
$42.036B
▼ 7.46%
$45.427B
▼ 2.35%
$46.519B
▼ 2.23%
$47.579B
▲ 2.29%
$46.516B
▼ 5.44%
2022
$49.191B
▲ 54.90%
$49.191B
▼ 4.02%
$51.252B
▲ 3.98%
$49.291B
▲ 29.20%
$38.151B
▼ 11.35%
$43.035B
▲ 0.52%
$42.813B
▲ 8.55%
$39.441B
▼ 18.68%
$48.500B
▲ 16.20%
$41.740B
▲ 0.43%
$41.562B
▲ 12.52%
$36.936B
▼ 0.65%
$37.177B
▲ 17.07%
2021
$31.756B
▲ 3.93%
$31.756B
▲ 4.78%
$30.308B
▼ 7.50%
$32.766B
▲ 6.80%
$30.680B
▼ 1.47%
$31.137B
▼ 3.19%
$32.162B
▼ 14.44%
$37.588B
▲ 1.93%
$36.877B
▲ 4.09%
$35.428B
▼ 0.77%
$35.704B
▼ 1.61%
$36.287B
▲ 22.49%
$29.624B
▼ 3.05%
2020
$30.555B
▼ 37.81%
$30.555B
▲ 15.47%
$26.461B
▲ 29.83%
$20.381B
▼ 9.99%
$22.644B
▼ 11.32%
$25.534B
▼ 5.72%
$27.084B
▼ 13.74%
$31.399B
▼ 8.12%
$34.174B
▲ 6.96%
$31.951B
▲ 36.39%
$23.427B
▼ 28.79%
$32.897B
▼ 18.07%
$40.153B
▼ 18.28%
2019
$49.135B
▲ 25.03%
$49.135B
▼ 3.61%
$50.977B
▼ 1.80%
$51.910B
▲ 14.08%
$45.502B
▲ 2.85%
$44.239B
▼ 3.83%
$46.002B
▲ 8.43%
$42.425B
▲ 15.77%
$36.647B
▼ 14.29%
$42.756B
▼ 1.12%
$43.240B
▼ 1.36%
$43.835B
▲ 1.00%
$43.403B
▲ 10.44%
2018
$39.299B
▼ 23.33%
$39.299B
▼ 8.87%
$43.125B
▼ 9.04%
$47.413B
▼ 9.40%
$52.331B
▼ 4.89%
$55.019B
▼ 3.92%
$57.262B
▲ 9.45%
$52.318B
▼ 3.59%
$54.266B
▲ 4.65%
$51.853B
▲ 15.92%
$44.730B
▲ 6.16%
$42.134B
▼ 17.91%
$51.327B
▲ 0.14%
2017
$51.257B
▲ 13.89%
$51.257B
▲ 3.68%
$49.438B
▲ 7.12%
$46.154B
▼ 1.50%
$46.859B
▲ 9.30%
$42.870B
▲ 0.07%
$42.839B
▲ 1.28%
$42.297B
▲ 7.68%
$39.280B
▼ 4.34%
$41.061B
▲ 0.43%
$40.885B
▲ 0.98%
$40.488B
▼ 4.20%
$42.264B
▼ 6.09%
2016
$45.007B
▲ 3.93%
$45.007B
▲ 4.01%
$43.272B
▲ 2.38%
$42.267B
▲ 0.75%
$41.954B
▲ 2.28%
$41.018B
▲ 3.14%
$39.768B
▼ 4.13%
$41.483B
▼ 1.78%
$42.236B
▼ 2.13%
$43.155B
▼ 5.17%
$45.510B
▲ 8.68%
$41.875B
▼ 1.31%
$42.432B
▼ 2.02%
2015
$43.306B
▲ 10.54%
$43.306B
▼ 11.31%
$48.826B
▲ 2.79%
$47.503B
▲ 15.89%
$40.990B
▼ 3.58%
$42.513B
▼ 0.54%
$42.744B
▼ 1.32%
$43.314B
▲ 1.07%
$42.854B
▼ 0.24%
$42.957B
▲ 0.90%
$42.572B
▼ 0.17%
$42.643B
▲ 10.99%
$38.421B
▼ 1.92%
2014
$39.175B
▼ 13.94%
$39.175B
▼ 3.07%
$40.417B
▼ 6.98%
$43.451B
▼ 3.46%
$45.006B
▼ 7.46%
$48.635B
▲ 7.29%
$45.332B
▲ 0.85%
$44.952B
▼ 6.31%
$47.978B
▲ 1.89%
$47.090B
▲ 7.99%
$43.604B
▼ 0.88%
$43.989B
▲ 2.42%
$42.949B
▼ 5.65%
2013
$45.521B
▲ 37.48%
$45.521B
▲ 9.07%
$41.734B
▲ 8.04%
$38.628B
▲ 11.43%
$34.665B
▼ 0.64%
$34.890B
▼ 7.15%
$37.578B
▲ 3.01%
$36.479B
▼ 11.51%
$41.222B
▲ 9.22%
$37.742B
▼ 13.02%
$43.393B
▲ 10.89%
$39.130B
▲ 3.94%
$37.645B
▲ 13.69%
2012
$33.111B
▲ 52.16%
$33.111B
▲ 1.03%
$32.774B
▲ 11.05%
$29.513B
▲ 1.52%
$29.070B
▲ 10.40%
$26.331B
▲ 11.70%
$23.572B
▲ 13.41%
$20.784B
▲ 10.69%
$18.777B
▼ 11.80%
$21.290B
▼ 2.16%
All market cap values reflect closing prices for the period shown.
📊 Phillips 66 Market Cap and Other Industry Peers
Below are selected companies from the Energy sector / subsector:
Data reflect the most recent market capitalization values available.
💡 What Is Market Capitalization and How Do We Calculate It?
For Phillips 66 (PSX), market capitalization represents the total market value of the company’s publicly traded shares. It helps investors understand Phillips 66’s size within the energy sector and compare it with other companies in the same industry.
In most cases, market capitalization is calculated by multiplying the current share price by the number of basic shares outstanding. Basic shares represent the actual number of common shares that currently exist, without including potential future shares from employee stock options, RSUs, warrants, or convertible securities. For example, if Phillips 66 had one million basic shares and each traded at $50, its market capitalization would be $50 million.
Formula: Market Cap = Share Price × Shares Outstanding
The value of Phillips 66’s market capitalization changes throughout the trading day because it mainly depends on the current share price. The number of shares outstanding typically remains stable unless the company issues new shares, buys back its own stock, or grants stock options to employees.
Based on the latest data, Phillips 66 had a market capitalization of $56.990 billion, placing it in the large-cap category within the energy industry.
Disclaimer: Despite all efforts, there may still be minor inaccuracies present in the data.
