Toyota, JX Advanced Metals, and Capcom also gained, though another US chipmaker selloff kept AI-spending concerns alive. The US intercepted a surprise Iranian attack on Middle East troops, reigniting tensions and lifting oil.

The Dollar Index stayed near 101.3 before the Fed decision. Markets still see a one-third chance of a rate hike this week and 80% odds for September, while renewed Middle East tensions pushed oil higher.

The July FOMC meeting gets underway today, with the policy decision due Wednesday. Rates are widely expected to remain unchanged, though some still expect a surprise hike.

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