Phillips 66XSWX:PSX +0.02%68 Days Inventory is 18.21 as of Mar. 2026, which is 37% above its 10-year median of 13.31. GuruFocus rates XSWX:PSX with a GF Score™ of 68/100 and a GF Value™ of CHF109.85. The stock has 6 warning signs investors should review. Among 688 Oil & Gas companies, Phillips 66 ranks better than 66.42% on this metric.
Days Inventory is also known as Days Sales of Inventory (DSI). Phillips 66's Average Total Inventories for the
three
months ended in Mar. 2026 was CHF4,677 Mil. Phillips 66's Cost of Goods Sold for the
three
months ended in Mar. 2026 was CHF23,441 Mil.
Hence, Phillips 66's Days Inventory for the
three
months ended in Mar. 2026 was 18.21.
The historical rank and industry rank for Phillips 66's Days Inventory or its related term are showing as below:
XSWX:PSX'
s Days Inventory Range Over the Past 10 Years
Min: 8.03 Med: 13.31 Max: 23.68
Current: 17.58
During the past 13 years, Phillips 66's highest Days Inventory was 23.68. The lowest was 8.03. And the median was 13.31.
XSWX:PSX's Days Inventory is ranked better than 66.42% of 688
companies
in the Oil & Gas industry
Industry Median: 31
vs XSWX:PSX: 17.58
Phillips 66's Days Inventory
increased
from Mar. 2025 (14.87) to Mar. 2026 (18.21).
It might indicate that Phillips 66's sales slowed down.
Inventory Turnover measures how fast the company turns over its inventory within a year.
Phillips 66's Inventory Turnover for the
three
months ended in Mar. 2026 was 5.01.
Inventory-to-Revenue determines the ability of a company to manage their inventory levels. It measures the percentage of Inventories the company currently has on hand to support the current amount of Revenue.
Phillips 66's Inventory-to-Revenue for the
three
months ended in Mar. 2026 was 0.18.
Phillips 66 (XSWX:PSX) Days Inventory Explanation
Days Inventory indicates the liquidity of the inventory. Generally, a lower Days Inventory is preferred as it indicates a shorter duration to clear off the inventory. An increase of the ratio may indicate the company's sales slowed. Similar ratios related to Days Inventory are:
1. Inventory Turnover measures how fast the company turns over its inventory within a year.
Phillips 66's Inventory Turnover for the
three
months ended in Mar. 2026 is calculated as
2. Inventory-to-Revenue determines the ability of a company to manage their inventory levels. It measures the percentage of Inventories the company currently has on hand to support the current amount of Revenue.
Phillips 66's Inventory to Revenue for the
three
months ended in Mar. 2026 is calculated as
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Be Aware
A lot of business are seasonable. It makes more sense to compare Days Inventory from the same period in the previous year instead of from the previous quarter.
Phillips 66 Days Inventory Related Terms
Phillips 66 Days Inventory Historical Data
* Premium members only.
The historical data trend for Phillips 66's Days Inventory can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
XSWX:PSX vs MPC, VLO, DINO: Days Inventory Comparison
For the Oil & Gas Refining & Marketing subindustry, Phillips 66's Days Inventory, along with its competitors' market caps and Days Inventory data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Phillips 66 Days Inventory vs Oil & Gas Industry
For the Oil & Gas industry and Energy sector, Phillips 66's Days Inventory distribution charts can be found below:
* The bar in red indicates where Phillips 66's Days Inventory falls into.
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Phillips 66 (XSWX:PSX) has a Days Inventory of 18.21 as of Mar. 2026. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Phillips 66 and its competitors. This is 37% above median its historical median of 13.31. Over the past decade, Phillips 66's Days Inventory has ranged from 8.03 to 23.68. According to the industry distribution chart, Phillips 66 ranks #231 out of 688 companies in the Oil & Gas industry, placing it in the top 33.6%.
Is Phillips 66's Days Inventory too high?
Phillips 66's current Days Inventory of 18.21 is 37% above median its 10-year median of 13.31. Over the past 10 years, this metric has ranged from a low of 8.03 to a high of 23.68. The Oil & Gas industry median Days Inventory is 31.00. Phillips 66's value of 18.21 is 41.3% below this industry median. Based on the distribution chart, Phillips 66 ranks #231 out of 688 companies in the Oil & Gas industry, which is above the industry midpoint. Overall, Phillips 66 has a GF Score™ of 68/100, reflecting its overall financial health beyond just this single metric.
How does Phillips 66's Days Inventory compare to MPC and VLO?
According to the Oil & Gas industry distribution chart, Phillips 66 ranks #231 out of 688 companies for Days Inventory. This puts Phillips 66 in the upper half of its industry. The industry median Days Inventory is 31.00. Phillips 66's value of 18.21 is 41.3% below this benchmark. Historically, Phillips 66's own Days Inventory has ranged from 8.03 to 23.68 over the past decade. While the company's 10-year median is 13.31 vs. the industry median of 31.00, Phillips 66 has consistently been below the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Days Inventory for an Oil & Gas company?
The median Days Inventory among Oil & Gas companies is 31.00, based on 688 companies in the industry. Companies in the top quartile (top 25%) have a Days Inventory significantly above this median, while those in the bottom quartile fall well below. However, Days Inventory should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Phillips 66's current Days Inventory of 18.21 is 41.3% below the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Days Inventory mean?
A high Days Inventory can signal that a stock is expensive relative to its fundamentals. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Phillips 66 and its competitors. For the Oil & Gas industry, the median Days Inventory is 31.00 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Phillips 66's current Days Inventory is 18.21, which is 37% above median its own 10-year median of 13.31. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Phillips 66 stock overvalued right now?
Phillips 66 (XSWX:PSX) has a current Days Inventory of 18.21. The stock's GF Value™ is CHF109.85, compared to a current price of CHF138.77 — trading 26.3% above its estimated fair value. The current Days Inventory is 18.21, which is 37% above median its 10-year median of 13.31 and 41.3% below the Oil & Gas industry median of 31.00. Phillips 66's overall GF Score™ is 68/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Days Inventory calculated?
Days Inventory is calculated from a company's financial statements. For Phillips 66 (XSWX:PSX), the current Days Inventory is 18.21 as of Mar. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is Phillips 66 (XSWX:PSX) Overvalued in 2026?
Based on GuruFocus' analysis, Phillips 66 stock appears to be overvalued.
The current stock price of CHF138.77 is trading 26.3% above its estimated GF Value™ of CHF109.85.
Key valuation signals for XSWX:PSX:
Days Inventory: 18.21 (37% above median its 10-year median of 13.31)
GF Value™: CHF109.85 vs. price of CHF138.77 (26.3% above fair value)
Industry Position: 41.3% below the Oil & Gas median (#231 of 688)
No single metric tells the full story. See the XSWX:PSX stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Phillips 66 is an independent refiner that owns or holds interest in 10 refineries with a total crude throughput capacity of 2.0 million barrels per day, or mmb/d, at the end of 2025. The midstream segment comprises extensive transportation and NGL processing assets. It includes 70,000 miles of crude oil, refined petroleum product, NGL and natural gas pipeline systems, and a comprehensive set of refined petroleum product, NGL and crude oil terminals, gathering and processing plants and fractionation facilities and various other storage and loading facilities. Its CPChem chemical joint venture operates facilities primarily in the United States and the Middle East and produces olefins and polyolefins.
68GF Score
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