IDKOF (Idemitsu Kosan Co) Inventory Turnover: 1.36 (As of Mar. 2026)

What is Idemitsu Kosan Co Inventory Turnover?

Idemitsu Kosan Co IDKOF -5.41% 67 Inventory Turnover is 1.36 as of Mar. 2026. GuruFocus rates IDKOF with a GF Score™ of 67/100 and a GF Value™ of $6.73 (Fairly Valued). The stock has 4 warning signs investors should review.

Inventory Turnover measures how fast the company turns over its inventory within a year. It is calculated as Cost of Goods Sold divided by Total Inventories. Idemitsu Kosan Co's Cost of Goods Sold for the three months ended in Mar. 2026 was $11,584 Mil. Idemitsu Kosan Co's Average Total Inventories for the quarter that ended in Mar. 2026 was $8,539 Mil. Idemitsu Kosan Co's Inventory Turnover for the quarter that ended in Mar. 2026 was 1.36.

Days Inventory indicates the number of days of goods in sales that a company has in the inventory. Idemitsu Kosan Co's Days Inventory for the three months ended in Mar. 2026 was 67.26.

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. Idemitsu Kosan Co's Inventory-to-Revenue for the quarter that ended in Mar. 2026 was 0.63.

Idemitsu Kosan Co (OTCPK:IDKOF) Inventory Turnover Explanation

Inventory Turnover measures how fast the company turns over its inventory within a year. A higher Inventory Turnover means the company has light inventory. Therefore the company spends less money on storage, write downs, and obsolete inventory. If the inventory is too light, it may affect sales because the company may not have enough to meet demand.

1. Days Inventory indicates the number of days of goods in sales that a company has in the inventory.

Idemitsu Kosan Co's Days Inventory for the three months ended in Mar. 2026 is calculated as:

Days Inventory	=	Average Total Inventories (Q: Mar. 2026 )	/	Cost of Goods Sold (Q: Mar. 2026 )	*	Days in Period
	=	8538.86	/	11584.263	*	365 / 4
	=	67.26

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.

Idemitsu Kosan Co's Inventory to Revenue for the quarter that ended in Mar. 2026 is calculated as

Inventory-to-Revenue	=	Average Total Inventories (Q: Mar. 2026 )	/	Revenue (Q: Mar. 2026 )
	=	8538.86	/	13620.269
	=	0.63

* 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

Usually retailers pile up their inventories at holiday seasons to meet the stronger demand. Therefore, the inventory of a particular quarter of a year should not be used to calculate Inventory Turnover. An average inventory is a better indication.

Idemitsu Kosan Co Inventory Turnover Related Terms

Idemitsu Kosan Co Inventory Turnover Historical Data

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The historical data trend for Idemitsu Kosan Co's Inventory Turnover can be seen below:

Idemitsu Kosan Co Inventory Turnover Chart

Idemitsu Kosan Co Annual Data

Trend

Mar17

Mar18

Mar19

Mar20

Mar21

Mar22

Mar23

Mar24

Mar25

Mar26

Inventory Turnover

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6.38

6.92

5.53

6.45

5.40

Idemitsu Kosan Co Quarterly Data
	Jun21	Sep21	Dec21	Mar22	Jun22	Sep22	Dec22	Mar23	Jun23	Sep23	Dec23	Mar24	Jun24	Sep24	Dec24	Mar25	Jun25	Sep25	Dec25	Mar26
Inventory Turnover	Get a 7-Day Free Trial															1.67	1.47	1.54	1.58	1.36

67GF Score

Idemitsu Kosan Co Ltd IDKOF

Inventory Turnover is just one metric. See GF Score™, valuation, warning signs, and more.

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Idemitsu Kosan Co Inventory Turnover Calculation

Idemitsu Kosan Co's Inventory Turnover for the fiscal year that ended in Mar. 2026 is calculated as

	Inventory Turnover (A: Mar. 2026 )
=	Cost of Goods Sold	/	Average Total Inventories
=	Cost of Goods Sold (A: Mar. 2026 )	/ (	(Total Inventories (A: Mar. 2025 )	+	Total Inventories (A: Mar. 2026 ))	/	count )
=	46327.715	/ (	(8499.754	+	8668.632)	/	2 )
=	46327.715	/	8584.193
=	5.40

Idemitsu Kosan Co's Inventory Turnover for the quarter that ended in Mar. 2026 is calculated as

	Inventory Turnover (Q: Mar. 2026 )
=	Cost of Goods Sold	/	Average Total Inventories
=	Cost of Goods Sold (Q: Mar. 2026 )	/ (	(Total Inventories (Q: Dec. 2025 )	+	Total Inventories (Q: Mar. 2026 ))	/	count )
=	11584.263	/ (	(8409.088	+	8668.632)	/	2 )
=	11584.263	/	8538.86
=	1.36

Frequently Asked Questions Learn more about Inventory Turnover →

What does a Inventory Turnover of 1.36 mean?

Idemitsu Kosan Co (IDKOF) has a Inventory Turnover of 1.36 as of Mar. 2026. Inventory turnover equals current-period cost of goods sold divided by average two-period total inventories. View historical data on Idemitsu Kosan Co and its competitors.

Is Idemitsu Kosan Co's Inventory Turnover too high?

Idemitsu Kosan Co's current Inventory Turnover is 1.36. Overall, Idemitsu Kosan Co has a GF Score™ of 67/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.

How does Idemitsu Kosan Co's Inventory Turnover compare to VLO and MPC?

Idemitsu Kosan Co's Inventory Turnover of 1.36 can be compared against companies in the Oil & Gas industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.

What is a good Inventory Turnover for an Oil & Gas company?

A good Inventory Turnover depends on the Oil & Gas industry context. However, Inventory Turnover should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.

What does a high Inventory Turnover mean?

A high Inventory Turnover can signal that a stock is expensive relative to its fundamentals. Inventory turnover equals current-period cost of goods sold divided by average two-period total inventories. View historical data on Idemitsu Kosan Co and its competitors. Idemitsu Kosan Co's current Inventory Turnover is 1.36. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.

Is Idemitsu Kosan Co stock overvalued right now?

Based on GuruFocus' analysis, Idemitsu Kosan Co (IDKOF) is currently considered Fairly Valued. The stock's GF Value™ is $6.73, compared to a current price of $7.58 — trading 12.6% above its estimated fair value. The current Inventory Turnover is 1.36. Idemitsu Kosan Co's overall GF Score™ is 67/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.

How is Inventory Turnover calculated?

Inventory Turnover is calculated from a company's financial statements. For Idemitsu Kosan Co (IDKOF), the current Inventory Turnover is 1.36 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 Idemitsu Kosan Co (IDKOF) Overvalued in 2026?

Based on GuruFocus' analysis, Idemitsu Kosan Co stock appears to be overvalued. The current stock price of $7.58 is trading 12.6% above its estimated GF Value™ of $6.73. GuruFocus considers Idemitsu Kosan Co to be Fairly Valued.

Key valuation signals for IDKOF:

Inventory Turnover: 1.36
GF Value™: $6.73 vs. price of $7.58 (12.6% above fair value)
GF Score™: 67/100 with 4 warning signs

No single metric tells the full story. See the IDKOF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.

Idemitsu Kosan Co Business Description

Industry Energy Oil & Gas

Comparable Companies TSE:8097 TSE:8131 TSE:8037 TSE:8132 TSE:5015 TSE:7486 TSE:6239 TSE:416A TSE:5010 TSE:7462 NSE:RELIANCE VLO MPC PSX XKAZ:KMGZ OHEL:NESTE NSE:IOC TSE:5020 TPE:6505 BOM:500547

Other Exchanges IDKOY:USA 5019:Japan I7B:Germany

Address 1-2-1 Otemachi, Chiyoda-ku, Tokyo, JPN, 100-8321

Website https://www.idemitsu.com

Idemitsu Kosan Co Ltd engages in a variety of activities globally that include petroleum products, oil exploration and production, coal, and other businesses. The company operates through five segments. The Basic Chemicals segment makes and sells olefins and aroma products. Electricity/Renewable Energy covers thermal, solar, and wind power generation, electricity sales, and solar business. Fuel Oil handles production, trading, and import/export of refined petroleum. The Highly Functional Materials segment includes lubricants, chemicals, electronic materials, paving materials, and agri-bio. The Resource segment explores, develops, and sells crude oil, natural gas, and coal. Others cover insurance and intra-group services. It generates the majority of its revenue from the Fuel oil segment.

67GF Score

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$7.58

Price

$6.73

GF Value

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