May 20 Stock Market Report: Mixed Tech Stocks Amid Semiconductor Correction, Investment Strategies Re-examined

Mixed Tech Stocks Amid Semiconductor Company Adjustments, Investment Strategies Need Re-evaluation

On May 19, 2026, major tech companies' stock prices showed mixed performance, offering a glimpse into the market's direction. In particular, some adjustments in semiconductor-related stocks have raised cautious sentiment among investors. Micron Technology, a key player in the NAND flash memory market, fell 0.06% to close at 681.54 won. TSMC (Taiwan Semiconductor Manufacturing Company) also ended the trading day down 0.02% at 395.95 won. Nvidia traded down 0.01% at 222.32 won, but maintained its market dominance with a market capitalization of 5.38 trillion won. In contrast, Google (Alphabet) closed flat at 396.94 won, showing 0.00% change, while Apple declined 0.01% to 297.84 won. Microsoft rose 0.00% to 423.54 won, and Amazon closed up 0.00% at 264.86 won, reflecting the diverging trends across the tech sector.

Analysis of Major Tech Stocks and ETFs

Examining the day-over-day price movements of major stocks, along with key indicators such as market capitalization and Price-to-Earnings Ratio (PER), provides a clearer picture of the current market sentiment. Despite a 0.01% dip, Nvidia's market capitalization of 5.38 trillion won solidifies its position as a leader in the semiconductor sector. However, its PER of 45.5x reflects high growth expectations while also signaling valuation pressure. Google (Alphabet) recorded a PER of 30.3x, and Apple at 36.1x, which are relatively lower but also carry concerns about potential growth deceleration. VOO (Vanguard S&P 500 ETF), tracking the MSCI World Index, showed virtually flat performance at 0.00%, with a market capitalization of 1.60 trillion won. Its PER stands at 27.8x, offering a stable valuation compared to individual tech stocks and acting as an indicator for the broader market trend. Similarly, QQQ (Invesco QQQ Trust), tracking the Nasdaq 100 Index, also closed flat at 0.00%, maintaining a market capitalization of 0.44 trillion won. QQQ's PER of 34.4x reflects its portfolio composition centered around growth stocks. Other notable companies include Meta Platforms, which closed flat at 0.00% with a market cap of 1.55 trillion won, and Tesla, which fell 0.03% to 409.99 won, with a market cap of 1.54 trillion won. Tesla's remarkable PER of 369.4x is attributed to market expectations for high growth, though it also suggests significant volatility.

Market Impact and Investment Implications

The recent surge in U.S. Treasury yields, which has shaken the New York stock market, is identified as a primary reason for the tech stock adjustments. As U.S. inflation pressures showed signs of resurgence in April, long-term bond yields spiked, directly burdening the valuations of overvalued tech stocks. According to AFP, these interest rate pressures led to corrections in major tech stocks that had been on a record-high rally, causing the three major indices to decline in unison. In this market environment, investors must pay closer attention to changes in individual stock fundamentals, alongside macroeconomic indicators, particularly interest rate trends. SK Securities forecasts that the domestic stock market will continue its bull run despite high volatility in the second half, projecting the KOSPI's upper band to reach 11,000 points. However, the brokerage firm warned of potential volatility increases, citing factors such as intensified concentration in semiconductor stocks and changes in credit balances. Discussions surrounding the shortening of stock settlement cycles in the domestic market are also noteworthy. Following President Lee Jae-myung's expressed interest, a forum is being held to discuss plans to shorten the stock settlement day from the current two business days. Some countries, like the United States, have already shortened their settlement cycles to facilitate smoother fund flows for investors, and such institutional improvements hold the potential to enhance the efficiency of the domestic stock market.

Future Outlook and Investment Strategy

The current market is influenced by two conflicting factors: the semiconductor industry's performance, driven by artificial intelligence (AI) demand centered on Nvidia, and interest rate volatility. Broadcom's high PER of 82.0x and ASML's PER of 49.0x still reflect strong demand for advanced semiconductor equipment and components, but the possibility of adjustments due to high valuations cannot be ruled out. Conversely, consumer staple companies like Walmart (PER 48.8x) and Costco (PER 55.9x), or financial institutions such as JPMorgan Chase (PER 14.4x) and Berkshire Hathaway (PER 14.5x), are showing relatively lower PERs and are likely to maintain stable performance amidst recession concerns. Intel, although its PER is not provided, presents potential investment opportunities depending on its future recovery, considering its position within the semiconductor market. Investment institutions generally anticipate a highly volatile market environment and recommend a selective approach to stocks with consistent earnings improvement and reasonable valuations. Close monitoring of macroeconomic indicators and adopting a strategy focused on long-term growth potential in industries and companies, rather than being swayed by short-term market fluctuations, appears to be the most effective.