Idemitsu Kosan Co.,Ltd.

OTCPK:IDKO.F Stock Report

Market Cap: US$12.8b

Idemitsu KosanLtd Past Earnings Performance

Past criteria checks 4/6

Idemitsu KosanLtd's earnings have been declining at an average annual rate of -16.6%, while the Oil and Gas industry saw earnings growing at 5.7% annually. Revenues have been growing at an average rate of 6.4% per year. Idemitsu KosanLtd's return on equity is 21.3%, and it has net margins of 4.2%.

Key information

-16.59%

Earnings growth rate

-12.44%

EPS growth rate

Oil and Gas Industry Growth33.67%
Revenue growth rate6.40%
Return on equity21.32%
Net Margin4.24%
Next Earnings Update11 Nov 2026

Recent past performance updates

Recent updates

Revenue & Expenses Breakdown

How Idemitsu KosanLtd makes and spends money. Based on latest reported earnings, on an LTM basis.

Earnings and Revenue History

OTCPK:IDKO.F Revenue, expenses and earnings (JPY Millions)
DateRevenueEarningsG+A ExpensesR&D Expenses
30 Jun 268,541,917362,093561,8260
31 Mar 268,105,891171,914542,2800
31 Dec 258,258,35129,179538,1230
30 Sep 258,491,85340,688536,7680
30 Jun 258,772,97114,276529,8280
31 Mar 259,190,225104,055527,2260
31 Dec 249,193,401116,887518,9800
30 Sep 249,198,764163,014511,5150
30 Jun 249,160,568278,134505,8690
31 Mar 248,719,201228,518500,8040
31 Dec 238,647,251243,102450,5250
30 Sep 238,666,655137,794460,5000
30 Jun 239,070,508119,731463,8450
31 Mar 239,456,281253,646457,8520
31 Dec 229,250,870329,199497,4140
30 Sep 228,633,841417,594482,6310
30 Jun 227,589,193370,439462,2110
31 Mar 226,686,761279,498449,7220
31 Dec 215,992,487242,364444,0110
30 Sep 215,407,911209,737427,5370
30 Jun 214,876,057204,639422,8800
31 Mar 214,556,62034,920418,9650
31 Dec 204,696,495-95,378410,4830
30 Sep 205,061,536-100,397411,4240
30 Jun 205,552,362-140,263415,3720
31 Mar 206,045,850-22,935417,0530
31 Dec 195,645,71744,600393,6010
30 Sep 195,311,20223,333364,1900
30 Jun 194,896,73662,349334,9490
31 Mar 194,425,14481,450308,3740
31 Dec 184,406,430119,008303,4440
30 Sep 184,147,281208,442299,9350
30 Jun 183,903,699192,030295,6580
31 Mar 183,730,690162,307292,5590
31 Dec 173,593,853172,627292,0800
30 Sep 173,461,388122,744288,0090
30 Jun 173,343,29995,120286,9850
31 Mar 173,190,34788,164284,2540
31 Dec 163,034,22251,602277,6430
30 Sep 163,130,414-6,673275,9700
30 Jun 163,326,172-28,971275,8660
31 Mar 163,570,202-35,993280,6780
31 Dec 153,848,214-108,329296,8710
30 Sep 154,079,816-163,309306,1170

Quality Earnings: IDKO.F has high quality earnings.

Growing Profit Margin: IDKO.F's current net profit margins (4.2%) are higher than last year (0.2%).

Free Cash Flow vs Earnings Analysis

Past Earnings Growth Analysis

Earnings Trend: IDKO.F's earnings have declined by 16.6% per year over the past 5 years.

Accelerating Growth: IDKO.F's earnings growth over the past year (2436.4%) exceeds its 5-year average (-16.6% per year).

Earnings vs Industry: IDKO.F earnings growth over the past year (2436.4%) exceeded the Oil and Gas industry 28.1%.

Return on Equity

High ROE: Whilst IDKO.F's Return on Equity (21.32%) is high, this metric is skewed due to their high level of debt.

Return on Assets

Return on Capital Employed

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Company Analysis and Financial Data Status

DataLast Updated (UTC time)
Company Analysis2026/09/10 23:27
End of Day Share Price 2026/07/22 00:00
Earnings2026/06/30
Annual Earnings2026/03/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

PackageDataTimeframeExample US Source *
Company Financials10 years
  • Income statement
  • Cash flow statement
  • Balance sheet
Analyst Consensus Estimates+3 years
  • Forecast financials
  • Analyst price targets
Market Prices30 years
  • Stock prices
  • Dividends, Splits and Actions
Ownership10 years
  • Top shareholders
  • Insider trading
Management10 years
  • Leadership team
  • Board of directors
Key Developments10 years
  • Company announcements

* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Idemitsu Kosan Co.,Ltd. is covered by 18 analysts. 5 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

AnalystInstitution
Takashi EnomotoBofA Global Research
Takashi MiyazakiCitigroup Inc
David HewittCLSA