Asian stocks fell sharply on Monday as renewed pressure on technology shares, escalating U.S.-Canada trade tensions and elevated borrowing costs reinforced a risk-off mood. South Korea’s KOSPI dropped 3.4%, led by an 8.7% plunge in Samsung Electronics, while Hong Kong’s Hang Seng lost 2.1% as Alibaba fell nearly 10% after pricing an HK$80 billion ($10.2 billion) share placement at an 8.4% discount. Investors are awaiting Nvidia’s earnings on Wednesday to assess whether the AI boom supports demanding valuations, while Federal Reserve Chair Kevin Warsh’s speech at the Jackson Hole symposium on Friday could offer clues on interest rates. President Donald Trump’s 50% tariffs on $20 billion of Canadian goods and Canada’s reciprocal measures added to concerns about global growth and corporate costs. Treasury yields remained high, with the 10-year near 4.71% and the 30-year near 5.25%, while oil prices eased. Australia’s S&P/ASX 200 gained 0.5%, helped by Ampol’s 376% increase in first-half underlying net profit to A$857.2 million.