道琼斯指数9月18日（周五）收盘下跌96.53点，跌幅0.19%，报51681.51点； 标普500指数9月18日（周五）收盘上涨12.39点，涨幅0.16%，报7650.15点； 纳斯达克综合指数9月18日（周五）收盘上涨104.25点，涨幅0.39%，报26522.55点。

French 10-year bond yield rose 14 bps intraday to 4.582% and is set to post its largest single-day increase since May 15.

U.S. officials warned allies that heavy ammunition use in a conflict with Iran could delay delivery of some weapons by as much as five years. Officials said Germany and other European buyers’ orders for Tomahawk cruise missiles and the 'Typhoon' long‑range launch system face postponements due to U.S. inventory shortfalls; some Eastern European states reliant on U.S. arms would also be affected. The U.S. military has expended large shares of advanced munitions in a conflict scenario cited by officials — more than half of advanced‑model Patriot interceptors (PAC‑3), about one‑third of Tomahawks, and roughly half of precision‑strike missiles and THAAD interceptors. The Pentagon said large‑scale use has exposed strategic stock shortfalls and industrial capacity bottlenecks. U.S. defence contractors are expanding capacity; Lockheed Martin plans to raise annual PAC‑3 production. Ukraine’s urgent demand for additional Patriot interceptors is adding pressure as U.S. policy prioritizes replenishing its own stocks.