News
Denso signals potential acquisition of ROHM to drive power semiconductor expansion
Tuesday, March 31, 2026 at 11:04 AM
Denso is exploring a significant capital investment and potential acquisition of ROHM to expand its semiconductor business, targeting synergies in power semiconductors for the automotive supply chain.
Context
On March 6, 2026, automotive parts giant Denso reportedly launched a bid to acquire Rohm Semiconductor for an estimated $8.3 billion. The move signals a transition from the strategic partnership established between the two companies in May 2025 to a full-scale takeover. Following the news, Rohm shares surged by their daily limit of 18%, while Denso shares saw a slight decline of 3.4% as investors weighed the significant capital outlay.
This acquisition is a critical component of Denso's strategy to secure its supply chain for next-generation mobility. Rohm is a major player in power semiconductors, specifically Silicon Carbide (SiC) technology, which is essential for increasing the efficiency and driving range of Electric Vehicles (EVs). By integrating Rohm's hardware with its own system construction expertise, Denso aims to dominate the power management market, which is increasingly vital for both automotive and data center applications.
As of late March 2026, Denso has officially confirmed it is discussing strategic options, including a share acquisition, to strengthen its competitive edge in electrification and intelligence. The deal would represent a major consolidation in Japan’s fragmented semiconductor sector, aligning with government goals to bolster domestic supply chain resilience against global competition.
Sources (8)
[Progress of a Disclosed Matter] Statement Regarding ...[PDF] Mitsubishi Electric, ROHM and Toshiba Electronic Devices ...Denso proposes acquisition of Rohm to strengthen automotive and power controlToyota's Denso bids for chipmaker Rohm in potential $8.3 billion deal | Reuters Rohm shares soar most since 2000 on Denso acquisition bid - The Japan Times Why Toyota supplier Denso wants to buy RohmSiC making further inroads into silicon for EV powertrainsEMERGING RESILIENCE IN THE ...
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