COMSYS Holdings Corporation
1721・Prime Market・Construction
Nippon COMSYS Group
COMSYS HD's largest segment, centered on telecom facility construction for the NTT Group
| Period | Current | Previous | Change |
|---|---|---|---|
| Net sales to external customers | ¥320,501 million | ¥310,138 million | ↑ |
| Total segment sales (including internal sales) | ¥326,812 million | ¥316,903 million | ↑ |
| Segment profit (operating income) | ¥26,064 million | ¥23,672 million | ↑ |
| Segment assets | ¥326,826 million | No corresponding data | — |
| Depreciation and amortization | ¥5,601 million | No corresponding data | — |
| Increase in tangible and intangible fixed assets | ¥7,856 million | No corresponding data | — |
Business Details
Centered on Nippon COMSYS Corporation as the core operating company, this segment mainly conducts telecom facility construction business for the NTT Group. It is built on three pillars: Telecom Carrier Business (fiber-optic line activation construction, mobile communication quality improvement construction), IT Solutions Business (large-scale system infrastructure renewal, information terminal procurement and maintenance), and Social Systems Business (large-scale data center construction, undergrounding of power lines, renewable energy-related construction). Among COMSYS HD's eight segments, it is the core segment boasting the largest scale in both net sales and operating income.
Recent Overview
Increased revenue and profit driven by mobile communication quality improvement construction and large-scale data center construction
In FY2026 (ending March 2026), communication quality improvement construction (mobile) in the NTT facility business continued to perform favorably, leading to increased revenue. In the IT Solutions Business, large-scale system infrastructure renewal projects and information terminal procurement and maintenance projects progressed smoothly. In the Social Systems Business, large-scale data center construction, undergrounding of power lines, and renewable energy-related construction progressed steadily, leading to increased revenue. On the profit side, operational efficiency improved through DX utilization, boosting productivity, and the segment achieved net sales to external customers of ¥320,501 million (up approximately ¥10,363 million year on year) and segment profit of ¥26,064 million (up approximately ¥2,392 million year on year). In addition, the company established the "Nippon COMSYS Corporation Indonesia Branch" to accelerate business expansion in the Indonesian market.
Key Products
Growth Drivers
- Continued favorable performance of communication quality improvement construction (mobile) in the NTT facility business
- Increased construction volume due to the shift of facilities from metal to fiber-optic lines (10G-compatible)
- Expanding demand for large-scale data center construction, mainly in the Tokyo metropolitan area
- Capturing demand for large-scale system infrastructure renewal and AI-related investment in the IT Solutions Business
- Improved profit margins through operational efficiency and productivity gains via DX utilization
- Strengthened construction capabilities through inter-group collaboration (flexible response to large-scale data center and communication quality improvement construction)
- Acceleration of overseas market expansion through the establishment of the Indonesia branch
- Demand for social infrastructure such as renewable energy-related construction and undergrounding of power lines
Risks
- Risk of customer concentration in the NTT Group (Nippon Telegraph and Telephone East Corporation is a major customer accounting for a significant portion of consolidated net sales)
- Risk of order fluctuations due to changes in telecom carriers' capital expenditure policies
- Occurrence of impairment losses on fixed assets (¥64 million recorded in the Nippon COMSYS Group in the current period)
- Impact on construction execution capacity due to difficulty securing personnel and shortage of engineers
- Risk of rising construction costs due to soaring energy and raw material prices
- Risk of construction delays and profitability deterioration on large-scale projects
Last updated: June 22, 2026

