Markets face a dense schedule through the end of September, led by the September 24 meeting between President Donald Trump and President Xi Jinping in Washington. Their agenda is expected to include trade policy, tariff structures, artificial intelligence governance, Taiwan relations, Iran matters and critical-mineral supply chains, with investors watching for progress on extending the tariff suspension arrangement negotiated the previous year. Treasury Secretary Scott Bessent and Vice Premier He Lifeng have also discussed a protocol for sharing information about significant artificial-intelligence incidents. On Wednesday, Meta CEO Mark Zuckerberg will speak at the company’s Connect conference, where artificial-intelligence developments and possible hardware launches are expected to feature prominently. The United Nations General Assembly’s general debate runs from September 22 through September 28 in New York. Costco will report fiscal fourth-quarter results Thursday, offering a read on consumer spending as households face elevated energy and grocery costs. S&P Global’s September flash U.S. purchasing managers’ indexes (surveys tracking private-sector activity) and several Federal Reserve officials’ remarks will provide additional signals after the central bank’s initial rate hike in three years. The prior week saw the Dow Jones Industrial Average fall 1.7%, the S&P 500 post marginal losses and the Nasdaq finish slightly higher.