Why is Mitsui Chemicals stock tumbling today?

Mitsui Chemicals announced plans to acquire JSR, a semiconductor materials maker, for approximately $11.6 billion (JPY1.84 trillion). The deal aims to expand Mitsui's presence in the semiconductor materials sector. According to the companies, the acquisition will strengthen their combined position in the growing semiconductor market.

Mitsui Chemicals agreed to buy JSR from JIC for $9B, including $2.9B in debt. This is Japan's largest chemical industry acquisition. Mitsui plans to focus on semiconductor materials, shifting from diversified chemicals.

Mitsui Chemicals plans to acquire JSR Corporation for $8.81 billion, expanding its semiconductor materials business. The deal, expected to close in 2027, aims to boost ICT profits to $1.20 billion by 2030 and includes $253 million in annual profit improvements by 2035. JSR's semiconductor materials business generated $1.24 billion in 2025 sales. Mitsui will finance the acquisition with debt and equity, targeting reduced debt ratios post-transaction.

Mitsui Chemicals will acquire JSR from Japan Investment Corp. for $11.6B. JSR, a Tokyo-based semiconductor materials company, will become a subsidiary. In 2025, JSR reported a net profit of $384.1M on sales of $2.94B, recovering from a 2024 loss.

Mitsui Chemicals (4183.T) and the Development Bank of Japan will acquire JSR Corp. (4185.T) for about 1.84 trillion yen, including debt. The deal aims to bolster Mitsui's semiconductor materials business, targeting growth from AI-driven demand. Completion is expected by the second half of fiscal 2027.

Mitsui Chemicals (4183.T) agreed to acquire JSR (4185.T) for $11.65B (¥1.84T). The deal, subject to regulatory approval, is expected to close in the second half of fiscal 2027. Mitsui plans to fund the acquisition with bridge loans and equity, aiming to complete its portfolio transformation under VISION 2030.