Latest results FY2026 · Prices updated Oct 30, 2026

HQ: Chiyoda, TokyoFounded 2023438 employeesWebsite
A machinery and components manufacturer formed through the integration of RIKEN and Nippon Piston Ring. It supplies engine components, including piston rings and valve seats, to the global automotive industry.
Business segments (share of revenue)
Latest results
FY2026
vs. same period a year earlier
Company forecastFY2027
| Segment | Share | Revenue | Operating profit | Margin |
|---|---|---|---|---|
| Automotive and Industrial Components | 74% | ¥123.2B | ¥10.4B | 8.4% |
| Piping and Construction Equipment | 10% | ¥17.3B | ¥644M | 3.7% |
| Other Businesses | 10% | ¥16.1B | ¥1.5B | 9.3% |
| Thermal Engineering Business | 6% | ¥9.2B | ¥879M | 9.6% |






Close (Oct 30, 2026)
¥3,810+23.3% (1Y)
RIKEN-NPR +23.3% over 1Y, 8.3pt above the industry average (52 companies, +15.0%).
Reference chart of daily closing prices, not real-time quotes (split-adjusted; weekly closes before the last year). Updated Oct 30, 2026.
| Period | Revenue | Op. profit | Net income | Total assets | Revenue YoY |
|---|---|---|---|---|---|
| 2026FY | ¥163.1B | ¥12.8B | ¥14.0B | ¥229.0B | — |
Sources: annual securities reports, earnings releases and other public disclosures (Mar 2026)
Data may contain input errors. For reference only; we accept no responsibility for its accuracy.