Prices as of 2026/10/30 close
Company comparison · Oil Refiners & Marketers
Idemitsu is the bigger company, with revenue of ¥8.1T — 3.0x Cosmo Energy's ¥2.7T.
Cosmo Energy earns more on each yen of sales, with an operating margin of 5.4% — 2.8 points above Idemitsu (2.6%).
Revenue growth in the latest results: Cosmo Energy −4.4%, Idemitsu −11.8%. For next year, Cosmo Energy guides for the fastest operating profit growth (−29.6%).
Cosmo Energy pays more on average — ¥11.5M against ¥9.94M at Idemitsu.
Over the past year the shares moved Idemitsu +41.4%, Cosmo Energy +22.8%.
Head-to-head wins15 metrics
One win per metric for the company with the best value. Metrics with no better or worse (P/E, average age, employees) are excluded.
ScaleInvestors
Idemitsu aheadIdemitsu 3 : Cosmo Energy 0
Revenue: Idemitsu ¥8.1T / Cosmo Energy ¥2.7T
ProfitabilityInvestors
Cosmo Energy aheadIdemitsu 0 : Cosmo Energy 3
Operating margin: Idemitsu 2.6% / Cosmo Energy 5.4%
GrowthInvestors
EvenIdemitsu 2 : Cosmo Energy 2
Revenue growth (YoY): Idemitsu −11.8% / Cosmo Energy −4.4%
Stock & balance sheetInvestors
Idemitsu aheadIdemitsu 2 : Cosmo Energy 0
Share price, 1 year: Idemitsu +41.4% / Cosmo Energy +22.8%
Pay & workforceJob seekers
Cosmo Energy aheadIdemitsu 1 : Cosmo Energy 2
Average salary: Idemitsu ¥9.94M / Cosmo Energy ¥11.5M
| Metric | Idemitsu | Cosmo Energy | Gap |
|---|---|---|---|
| Revenue | ◎¥8.1T | ¥2.7T | 3.0x |
| Operating profit | ◎¥212.2B | ¥144.8B | 1.5x |
| Net income | ◎¥171.9B | ¥74.0B | 2.3x |
| Metric | Idemitsu | Cosmo Energy | Gap |
|---|---|---|---|
| Operating margin | 2.6% | ◎5.4% | 2.8pt |
| Net margin | 2.1% | ◎2.8% | 0.6pt |
| Revenue per employee | ¥1.6B | ◎¥10.6B | 6.6x |
| Metric | Idemitsu | Cosmo Energy | Gap |
|---|---|---|---|
| Revenue growth (YoY) | −11.8% | ◎−4.4% | 7.4pt |
| Operating profit growth (YoY) | ◎+30.8% | +12.9% | 17.9pt |
| Revenue CAGRlast 5 years | ◎+12.2% | +3.7% | 8.5pt |
| Guidance: revenue growthnext FY plan | — | +7.2% | |
| Guidance: op. profit growthnext FY plan | −34.0% | ◎−29.6% | 4.5pt |
| Metric | Idemitsu | Cosmo Energy | Gap |
|---|---|---|---|
| Share price, 1 year | ◎+41.4% | +22.8% | 18.6pt |
| Share price, 3 months | ◎+15.8% | +7.0% | 8.8pt |
| Share price (close) | ¥1,515.5 | ¥4,268 |
◎ marks the best value for each metric. Revenue and profit are from the latest full-year earnings release; share prices are closing-price references; P/E = latest close ÷ trailing EPS. For banks and some other financials, revenue means ordinary income.
| Metric | Idemitsu | Cosmo Energy | Gap |
|---|---|---|---|
| Average salary | ¥9.94M | ◎¥11.5M | ¥1.57M |
| Starting salary (monthly) | ¥304,000 | ◎¥330,000 | ¥26,000 |
| Average tenure | ◎17.8 yrs | 14.6 yrs | 3.2 |
| Average age | 42.0 | 43.0 | 1.0 |
| Employees | 5,060 | 253 | 20.0x |
Average salary is for the reporting (parent) company and is affected by average age and job mix. Holding companies with few employees are left out of the salary comparison.
Close (Oct 30, 2026)
¥1,515.5+41.4% (1Y)
Idemitsu +41.4% over 1Y. Compared: Cosmo Energy +22.8%.
Reference chart of daily closing prices, not real-time quotes (split-adjusted; weekly closes before the last year). Each line shows the % change from the start of the period. Updated Oct 30, 2026.
Idemitsu3 segments
Cosmo Energy4 segments
AAverage annual salary from the securities filings: Cosmo Energy ¥11.5M, Idemitsu ¥9.94M. Cosmo Energy pays the most. Averages also depend on staff age and job mix, so check the average age too (Idemitsu 42.0, Cosmo Energy 43.0).
ARevenue in the latest results: Idemitsu ¥8.1T, Cosmo Energy ¥2.7T. Idemitsu is the bigger company, with revenue of ¥8.1T — 3.0x Cosmo Energy's ¥2.7T.
AOperating margins: Cosmo Energy 5.4%, Idemitsu 2.6%. Cosmo Energy turns the highest share of sales into operating profit.
AShare price change over the past year (closing prices, for reference): Idemitsu +41.4%, Cosmo Energy +22.8%. Idemitsu has risen the most.
Comparing 2 companies (up to 4)
Sources: earnings releases (kessan tanshin), annual securities reports and other public information. Share prices are closing-price references, not real-time. Our data may contain errors; investment decisions are your own responsibility.
