Avoid the stress of overpaying for a stock or missing an opportunity by using the right tools and insights to evaluate Phillips 66 before investing.

In this article, we go over a few key elements for understanding Phillips 66’s stock price such as:

• Phillips 66’s current stock price and volume
• Why Phillips 66’s stock price changed recently
• Upgrades and downgrades for PSX from analysts
• PSX’s stock price momentum as measured by its relative strength

About Phillips 66 (PSX)

Before we jump into Phillips 66’s stock price, history, target price and what caused it to recently rise, let’s take a look at some background.

Phillips 66 operates as an integrated downstream energy provider in the United States, the United Kingdom, Germany, and internationally. It operates through five segments: Midstream, Chemicals, Refining, Marketing and Specialties (M&S), and Renewable Fuels. The Midstream segment provides crude oil and refined petroleum product transportation, terminaling, and storage services, as well as natural gas and natural gas liquids (NGL) gathering, processing, transportation, fractionation, storage and marketing services. It also exports liquefied petroleum gas. The Chemicals segment produces and markets ethylene and other olefin products; aromatics and styrenics products, such as benzene, cyclohexane, styrene, and polystyrene; various specialty chemical products, including organosulfur chemicals, solvents, catalysts, and chemicals used in drilling and mining; and petrochemicals and plastics. The Refining segment refines crude oil and other feedstocks into petroleum products, such as gasolines and distillates, including aviation fuels. The M&S segment purchases for resale and markets refined products, including gasolines, distillates, and aviation fuels. This segment also manufactures and markets specialty products, such as automotive, commercial, industrial, and specialty lubricants, as well as base oils. The Renewable Fuels segment processes renewable feedstocks into renewable products, as well as supplies sustainable aviation fuel. This segment also procures renewable feedstocks, manages certain regulatory credits, and markets renewable diesel, renewable jet fuel, and other renewable fuels. The company markets its products under the Phillips 66, Conoco and 76, JET, Kendall, Red Line, and other private label brands. Phillips 66 was founded in 1875 and is headquartered in Houston, Texas.

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Phillips 66’s Stock Price as of Market Close

As of August 21, 2026, 4:00 PM, CST, Phillips 66’s stock price was $242.870.

Phillips 66 is up 1.2% from its previous closing price of $240.000.

During the last market session, Phillips 66’s stock traded between $240.000 and $244.470. Currently, there are approximately 400.95 million shares outstanding for Phillips 66.

Phillips 66’s price-earnings (P/E) ratio is currently at 13.9, which is high compared to the Oil, Gas & Consumable Fuels industry median of 13. The price-earnings ratio gauges market expectation of future performance by relating a stock’s current share price to its earnings per share.

Phillips 66 Stock Price History

Phillips 66’s (PSX) price is currently up 14.73% so far this month.

During the month of August, Phillips 66’s stock price has reached a high of $246.950 and a low of $200.310.

Over the last year, Phillips 66 has hit prices as high as $246.950 and as low as $124.880. Year to date, Phillips 66’s stock is up 88.21%.

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What Caused Phillips 66 Stock’s Price to Rise?

Stock prices are primarily based on seller supply and buyer demand. But have you ever wondered about what other factors affect a stock's price?

When an analyst changes their opinion of a stock by upgrading or downgrading their rating, it often leads to a sudden stock price adjustment. As of August 21, 2026, there were 0 analysts who downgraded Phillips 66’s stock and 1 analyst who upgraded over the last month.

Additionally, you'll want to evaluate Phillips 66’s financial health and valuation. Investors can use AAII's Value Grade, which combines six key valuation metrics like P/E and P/S ratios for a comprehensive analysis to conduct analysis on Phillips 66’s valuation and financial health. This approach mitigates the limitations of single-metric evaluations.

Phillips 66’s current valuation based on AAII’s Value Grade is a B, which means it is considered to be Value.

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Lastly, news and media coverage as well as recent press reports about the company or its industry may cause stock prices to fluctuate. You can check out the most recent news articles about Phillips 66 (PSX) by visiting AAII Stock Evaluator.

Relative Price Strength of Phillips 66

Relative price strength measures a stock's performance against the market, helping investors identify stocks that are outperforming benchmarks.

For AAII’s Momentum Grade, a weighted relative price strength is calculated. Follow this link to learn more about the Momentum Grade.

As of August 21, 2026, Phillips 66 has a weighted four-quarter relative price strength of 17.34%, which translates to a Momentum Score of 89 and is considered to be Very Strong.

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Phillips 66 Stock Price: Bottom Line

As of August 21, 2026, Phillips 66’s stock price is $242.870, which is up 1.2% from its previous closing price.

AAII advises against making stock decisions based solely on price or past returns. Instead, consider a variety of metrics, fundamentals, and analytics to evaluate a stock like Phillips 66 stock prices are influenced by market supply and demand and offer just a snapshot of a company's overall health.

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