Japanese shares rebounded when trading resumed after Monday's holiday, bucking broader regional declines, amid heightened tensions in the Middle East.
The Nikkei 225 rose 402.9 points or 0.6% to open at 64,544.05.
This week marks the start of megacap earnings, with Tesla and Alphabet reporting on Wednesday, followed by Microsoft, Meta, Apple, and Amazon next week, as investors demand clearer returns on massive AI spending.
At home, Sumitomo Mitsui Financial Group (TYO:8316), Chugai Pharmaceutical (TYO:4519) and Shin-etsu Chemical (TYO:4063) are set to release earnings reports this week.