Energy & Resources Companies Ranked by Operating Margin (FY2026, 8 companies)

8 companies · FY2026 results (earnings releases, consolidated)

INPEX ranks first for operating margin in the Energy & Resources industry at 56.5%. The top three are INPEX (56.5%), K&O (11.6%) and JAPEX (11.4%).

Across the 8 companies the average is 12.8% and the median 7.2%. San-Ai Obbli comes last at 2.0%, a gap of 54.5 percentage points to the leader.

1 of 8 companies are above the average.

Share prices, forecasts and results for Energy & Resources Industry

Energy & Resources Industry TOP3

1
INPEXEnergy & Resources Industry56.5%
2
K&OEnergy & Resources Industry11.6%
3
JAPEXEnergy & Resources Industry11.4%

Companies: 8
Average: 12.8%
Median: 7.2%
All-industry average: 11.1%1.7pt difference
Above average: 1of 8

Operating margin ranking: Energy & Resources Industry

8 companies

RankCompanyAverage 12.8%Operating marginRevenueShares 1Y

1
INPEX160556.5%56.5%¥2.0T+43.1%
2
K&O166311.6%11.6%¥91.4B+7.1%
3
JAPEX166211.4%11.4%¥340.3B+35.8%
4
Nittetsu Mining15159.0%9.0%¥209.7B+60.7%
5
Cosmo Energy50215.4%5.4%¥2.7T+21.3%
6
ENEOS50204.0%4.0%¥11.8T+46.6%
7
Idemitsu50192.6%2.6%¥8.1T+41.4%
8
San-Ai Obbli80972.0%2.0%¥611.6B+19.4%

Shares 1Y is a closing-price reference (vs. about a year earlier).

Financials and pay compared

The same companies on other measures

Rank	Company	Operating margin	Average salary	Revenue	Operating profit
1	INPEX1605	56.5%	¥11.7M	¥2.0T	¥1.1T
2	K&O1663	11.6%	¥7.54M	¥91.4B	¥10.6B
3	JAPEX1662	11.4%	¥10.3M	¥340.3B	¥38.9B
4	Nittetsu Mining1515	9.0%	¥8.10M	¥209.7B	¥18.8B
5	Cosmo Energy5021	5.4%	¥11.5M	¥2.7T	¥144.8B
6	ENEOS5020	4.0%	¥11.4M	¥11.8T	¥466.6B
7	Idemitsu5019	2.6%	¥9.94M	¥8.1T	¥212.2B
8	San-Ai Obbli8097	2.0%	¥8.23M	¥611.6B	¥12.4B

Revenue and operating profit are from the latest full-year consolidated results. Average salary is for the reporting entity per its annual securities report; pure holding companies with fewer than 50 staff are excluded.