World shares mostly advance as tech stocks rebound from sell-offs, while oil prices slip

World shares were mostly higher on Tuesday, with tech shares leading gains after Wall Street recovered some of its sell-off from last week. Oil prices fell back after surging on Monday as fighting flared between Israel and Iran, threatening to pull the region back into full-scale war. SK Hynix, which on Monday announced plans to partner with Nvidia in building data centers, jumped 15.9%.