DIAMOND ELECTRIC HOLDINGS Co., Ltd.
6699・Prime Market・Electric Appliances
Automotive Equipment Business
Automotive parts manufacturing and sales business centered on ignition coils for gasoline engines
| Period | Current | Previous | Change |
|---|---|---|---|
| Net Sales (Full Year, FY2026 (ending March 2026)) | ¥40,468 million | ¥34,928 million | ↑ |
| Segment Profit (Full Year, FY2026 (ending March 2026)) | ¥1,038 million | ¥380 million | ↑ |
| Segment Assets (Full Year, FY2026 (ending March 2026)) | ¥27,836 million | ¥28,298 million | ↓ |
| Depreciation and Amortization (Full Year, FY2026 (ending March 2026)) | ¥2,105 million | ¥2,259 million | ↓ |
| Capital Expenditures (Increase in Tangible and Intangible Fixed Assets, Full Year, FY2026 (ending March 2026)) | ¥867 million | ¥671 million | ↑ |
Business Details
A business that develops, manufactures, and sells ignition coils for gasoline engines, transmission switches, rotation sensors, automotive control boards, and other products. The main subsidiary, Diamond Zebra Electric Co., Ltd., serves as the core of this business, supplying automakers through a global supply chain spanning Japan, the United States, Hungary, Thailand, Indonesia, India, and other regions. The mid- to long-term management plan "Flame Scrum" sets a goal of becoming the world's No.1 in ignition coil market share.
Recent Overview
Sales and profit both improved significantly, benefiting from increased production of internal combustion engine vehicles
In FY2026 (ending March 2026), net sales were ¥40,468 million (up 15.9% year on year) and segment profit was ¥1,038 million (up 173.0% year on year), a significant improvement. Increased production of internal combustion engine vehicles amid slowing demand for electric vehicles in the United States and China served as a tailwind. Despite the impact of U.S. tariffs, improvements in manufacturing productivity and material cost ratios progressed, leading to a marked increase in profitability.
Key Products
Growth Drivers
- Expansion of ignition coil demand driven by increased production of internal combustion engine vehicles amid slowing electric vehicle demand in the U.S. and China
- Strengthening of the earnings structure through improved manufacturing productivity and material cost ratio improvements
- Progress in addressing geopolitical risks utilizing the Hungary base and countermeasures against China's rare earth supply issues
- Development of carbon-neutral products through Project A (ammonia combustion technology) and hydrogen engine conversion technology
- Stabilization of supply through the reconstruction of the global supply chain (Japan, U.S., Hungary, Thailand, Indonesia, India, etc.)
Risks
- Rising manufacturing costs and sales impact due to U.S. tariff measures
- Supply chain risk due to China's rare earth supply issues
- Medium- to long-term risk of declining demand for internal combustion engine vehicles due to accelerating EV adoption
- Manufacturing cost pressure from continued rises in raw material prices and inflation
- Instability in the global supply chain due to geopolitical risks (U.S.-China tensions, the invasion of Ukraine, and the situation in the Middle East)
Last updated: June 29, 2026