美以重大空袭！美股全线跳水！

Group 1: Geopolitical Events - The U.S. and Israel conducted airstrikes on Iranian steel plants, specifically targeting the Khuzestan Steel Plant and the Isfahan Mobarakeh Steel Plant, along with its associated power plant [1] - The Iranian Revolutionary Guard announced the closure of the Strait of Hormuz, warning that any attempts to navigate through the strait would face severe repercussions [6][7] Group 2: Stock Market Performance - U.S. stock markets experienced a significant decline, with the Dow Jones down 0.96%, the S&P 500 down 0.9%, and the Nasdaq Composite down 1.3% [2] - Cybersecurity stocks fell sharply, with Palo Alto Networks, CrowdStrike, and Zscaler dropping over 5%, while Okta fell over 4% [4] - Microsoft shares continued to decline, marking a nine-day losing streak and a drop of over 32% from its peak, potentially leading to its worst quarterly performance since 2008 due to concerns over AI infrastructure investments and competition from AI startups [4] Group 3: Sector-Specific Movements - Optical communication stocks saw gains, with Lumentum rising over 4% and Coherent and Corning increasing over 3% [5] - AstraZeneca's stock surged by 5% following the approval of its drug, Deruxtecan, by the Chinese regulatory authority [6] Group 4: Commodity Prices - International oil prices increased, with Brent crude rising by 1.64% to $103.56 per barrel and WTI crude up by 2.94% to $97.26 per barrel [8] - Spot gold prices rose by 1.37%, reaching $4421 per ounce, while spot silver increased by 0.49% [10]