BP Castrol KKTSE:5015 +0.20%79 Days Inventory is 52.34 as of Dec. 2025, which is 23% above its 10-year median of 42.65. GuruFocus rates TSE:5015 with a GF Score™ of 79/100 and a GF Value™ of 円1,123.50 (Modestly Undervalued). The stock has 3 warning signs investors should review. Among 684 Oil & Gas companies, BP Castrol KK ranks worse than 74.85% on this metric.
Days Inventory is also known as Days Sales of Inventory (DSI). BP Castrol KK's Average Total Inventories for the
three
months ended in Dec. 2025 was 円1,396 Mil. BP Castrol KK's Cost of Goods Sold for the
three
months ended in Dec. 2025 was 円2,434 Mil.
Hence, BP Castrol KK's Days Inventory for the
three
months ended in Dec. 2025 was 52.34.
The historical rank and industry rank for BP Castrol KK's Days Inventory or its related term are showing as below:
TSE:5015'
s Days Inventory Range Over the Past 10 Years
Min: 37.51 Med: 42.65 Max: 62.04
Current: 62.04
During the past 13 years, BP Castrol KK's highest Days Inventory was 62.04. The lowest was 37.51. And the median was 42.65.
TSE:5015's Days Inventory is ranked worse than 74.85% of 684
companies
in the Oil & Gas industry
Industry Median: 31
vs TSE:5015: 62.04
BP Castrol KK's Days Inventory
increased
from Dec. 2024 (43.85) to Dec. 2025 (52.34).
It might indicate that BP Castrol KK's sales slowed down.
Inventory Turnover measures how fast the company turns over its inventory within a year.
BP Castrol KK's Inventory Turnover for the
three
months ended in Dec. 2025 was 1.74.
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.
BP Castrol KK's Inventory-to-Revenue for the
three
months ended in Dec. 2025 was 0.35.
BP Castrol KK (TSE:5015) 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.
BP Castrol KK's Inventory Turnover for the
three
months ended in Dec. 2025 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.
BP Castrol KK's Inventory to Revenue for the
three
months ended in Dec. 2025 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.
BP Castrol KK Days Inventory Related Terms
BP Castrol KK Days Inventory Historical Data
* Premium members only.
The historical data trend for BP Castrol KK'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.
TSE:5015 vs VLO, MPC, PSX: Days Inventory Comparison
For the Oil & Gas Refining & Marketing subindustry, BP Castrol KK'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.
BP Castrol KK Days Inventory vs Oil & Gas Industry
For the Oil & Gas industry and Energy sector, BP Castrol KK's Days Inventory distribution charts can be found below:
* The bar in red indicates where BP Castrol KK'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.
BP Castrol KK (TSE:5015) has a Days Inventory of 52.34 as of Dec. 2025. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on BP Castrol KK and its competitors. This is 23% above median its historical median of 42.65. Over the past decade, BP Castrol KK's Days Inventory has ranged from 37.51 to 62.04. According to the industry distribution chart, BP Castrol KK ranks #512 out of 684 companies in the Oil & Gas industry, placing it in the top 74.9%.
Is BP Castrol KK's Days Inventory too high?
BP Castrol KK's current Days Inventory of 52.34 is 23% above median its 10-year median of 42.65. Over the past 10 years, this metric has ranged from a low of 37.51 to a high of 62.04. The Oil & Gas industry median Days Inventory is 31.00. BP Castrol KK's value of 52.34 is 68.8% above this industry median. Based on the distribution chart, BP Castrol KK ranks #512 out of 684 companies in the Oil & Gas industry, which is below the industry midpoint. Overall, BP Castrol KK has a GF Score™ of 79/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does BP Castrol KK's Days Inventory compare to VLO and MPC?
According to the Oil & Gas industry distribution chart, BP Castrol KK ranks #512 out of 684 companies for Days Inventory. This places BP Castrol KK in the lower half of its industry. The industry median Days Inventory is 31.00. BP Castrol KK's value of 52.34 is 68.8% above this benchmark. Historically, BP Castrol KK's own Days Inventory has ranged from 37.51 to 62.04 over the past decade. While the company's 10-year median is 42.65 vs. the industry median of 31.00, BP Castrol KK has consistently been above 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 684 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. BP Castrol KK's current Days Inventory of 52.34 is 68.8% above 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 BP Castrol KK 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. BP Castrol KK's current Days Inventory is 52.34, which is 23% above median its own 10-year median of 42.65. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is BP Castrol KK stock overvalued right now?
Based on GuruFocus' analysis, BP Castrol KK (TSE:5015) is currently considered Modestly Undervalued. The stock's GF Value™ is 円1,123.50, compared to a current price of 円996.00 — trading 11.3% below its estimated fair value. The current Days Inventory is 52.34, which is 23% above median its 10-year median of 42.65 and 68.8% above the Oil & Gas industry median of 31.00. BP Castrol KK's overall GF Score™ is 79/100 with 3 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 BP Castrol KK (TSE:5015), the current Days Inventory is 52.34 as of Dec. 2025. 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 BP Castrol KK (TSE:5015) Overvalued in 2026?
Based on GuruFocus' analysis, BP Castrol KK stock appears to be undervalued.
The current stock price of 円996.00 is trading 11.3% below its estimated GF Value™ of 円1,123.50.
GuruFocus considers BP Castrol KK to be Modestly Undervalued.
Key valuation signals for TSE:5015:
Days Inventory: 52.34 (23% above median its 10-year median of 42.65)
GF Value™: 円1,123.50 vs. price of 円996.00 (11.3% below fair value)
Industry Position: 68.8% above the Oil & Gas median (#512 of 684)
No single metric tells the full story. See the TSE:5015 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
BP Castrol KK engages in the development, manufacture, import, and sale of automotive lubricating oil in Japan. The company sells its product under the brand name BP brand and the Castrol brand. The BP brand is divided into Vervis, Vervis sport, and mini. The Castrol brand is the top brand of lubricant. Both the brands are used for the consumer business and professional business.
79GF Score
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