Japanese stocks rose as artificial intelligence and chip-related shares led gains after all three major U.S. indexes and the Philadelphia Semiconductor Index advanced. The Nikkei Stock Average opened at 66,505.94 on the 28th, up 141.74 points from the previous weekend, before a later market update put it up 0.8% at 66,877.70. Investors were also monitoring Treasury yields, Middle East tensions, oil prices and the weaker dollar at 157.58 yen. Technology sentiment was supported by Meta Platforms’ Muse AI agent, while oil prices rose after President Donald Trump rejected Iran’s proposals concerning the Strait of Hormuz and a seven-day ceasefire.