US Stock Market Reaches All-Time High Amid AI Investment

The benchmark S&P 500 has increased by 14 percent this year, despite high oil prices and a sell-off of US government debt. The US stock market has reached an all-time high, driven by enthusiasm surrounding artificial intelligence (AI). The S&P 500 closed 0.58 percent higher on Tuesday, surpassing the previous record set in mid-August. The Nasdaq Composite, which is more focused on technology stocks, also achieved a record high, finishing up 0.45 percent. Tech stocks performed well, with all of the 'Magnificent Seven' except Meta closing higher. Amazon led with a 1.95 percent increase, followed by Microsoft and Tesla, which rose 0.78 percent and 0.51 percent, respectively. Apple and Alphabet both increased by 0.22 percent, while Nvidia gained 0.14 percent. Meta, which has seen a rise of over 20 percent since the launch of its new AI assistant, Muse, fell by 0.41 percent. Other notable tech stocks included Marvell Technology, which rose 5.81 percent, and Cisco, which gained 4.54 percent. Keith Lerner, chief investment officer and chief market strategist at Truist Advisory Services, described the market rally as a 'technology and AI surge.' He noted that technology and communication services were the only two sectors in the S&P 500 to rise last month, while the other nine sectors declined. Wall Street has remained resilient despite various challenges facing the US economy, including the energy crisis linked to the US-Israel conflict over Iran and a sell-off of government bonds due to increasing national debt. The S&P 500 has risen 14 percent in 2026, while the Nasdaq Composite has increased by 18.78 percent. Lochlan Halloway, a senior equity strategist at Morningstar Australia, stated that investors are optimistic about AI's potential, believing that investments in data centers will yield good returns, which has outweighed concerns about rising interest rates and oil prices. Halloway mentioned that while they are positive about AI, the market is concentrated in a few companies, making the outlook for US and global shares dependent on the continued success of AI. Lerner from Truist Advisory indicated that the market rally could persist through the end of 2026, citing historical trends and expectations for strong corporate earnings. He noted that while the market may not rise in a straight line, the fourth quarter of midterm-election years has historically produced an average gain of 7 percent, with positive outcomes 84 percent of the time since 1950. He also highlighted rising interest rates as a significant risk to the upward trend but concluded that the evidence suggests the bull market still has potential for further gains. Meanwhile, Asian stock markets experienced declines on Wednesday, with key indexes in Japan, South Korea, and Hong Kong down 0.79 percent, 1.36 percent, and 0.71 percent, respectively, as of 02:30 GMT. Oil prices, which have been elevated since the onset of the conflict in Iran, increased on Wednesday as traders assessed the implications of ongoing fighting between Yemen's internationally recognized government and the Iran-aligned Houthis. Brent crude futures for December delivery were priced at $101.45 a barrel as of 02:30 GMT, reflecting a 0.87 percent increase.