[Good Morning Market] Nvidia and Apple Boost Sentiment... Domestic Market Expected to See Strength in IT Stocks

Overnight, the New York stock market closed at record highs for all three major indices, buoyed by Nvidia and Apple. The domestic stock market is also expected to open higher, led by gains in domestic IT-related stocks such as semiconductors, following this momentum.

On September 22 (local time), the New York stock market ended with all three major indices reaching all-time highs, fueled by Nvidia’s announcement of a massive investment.

On this day, the Dow Jones Industrial Average closed at 46,381.54, up 66.27 points (0.14%) from the previous trading day.

The S&P 500 Index finished at 6,693.75, up 29.39 points (0.44%), while the tech-heavy Nasdaq Composite closed at 22,788.98, rising 157.50 points (0.70%) from the previous session.

With this rise, the S&P 500 Index set its 28th record high of the year, while the Nasdaq Composite marked its 29th all-time high in 2025.

Nvidia ignited the market by announcing a new strategic partnership with OpenAI and revealing plans to invest up to 100 billion dollars (about 140 trillion won) in OpenAI. As a result of this decision, Nvidia is expected to become a major shareholder of OpenAI.

Oracle also benefited from the mega-investment agreement between Nvidia and OpenAI. Amid expectations that infrastructure investment in the artificial intelligence (AI) industry will continue for the next several years, Oracle enjoyed secondary gains. Oracle’s share price jumped 6.31%.

Apple also contributed to the positive sentiment in tech stocks, rising 4.31%. Although the new iPhone 17 initially received criticism for its design, actual demand proved to be strong after its launch.

On September 23, the domestic stock market is expected to open higher, buoyed by the strong performance of tech stocks in the New York market. However, as the concentration on semiconductor stocks has intensified this month, there is a possibility that some stocks may see profit-taking sell-offs.

Han Jiyoung, a researcher at Kiwoom Securities, analyzed, "Since September, foreign investors have recorded net purchases of 7.2 trillion won in KOSPI," adding, "Of this amount, 87% was concentrated in semiconductors." She further explained that "the strong performance of US AI companies such as Oracle and Broadcom, as well as expectations for Micron’s results, have served as overlapping positive factors unique to the semiconductor sector."

Han also stated, "Now, market participants are likely to start calculating the sustainability of the semiconductor rally," and added, "Future changes in investment opinions on the semiconductor sector by domestic and international securities firms, Micron’s earnings on September 26, and Korea’s semiconductor export data for September, to be released on October 1, will serve as key indicators."

She advised, "It is important to keep in mind that profit-taking from the recent sharp rally in semiconductor stocks may occur intermittently."