US stock markets rallied on local time July 21, with the Nasdaq Composite surging 1.29% to 25,837.21 as semiconductor stocks rebounded sharply and corporate earnings exceeded expectations. The Philadelphia Semiconductor Index jumped 5.2%, its largest single-day gain in a month, while SK Hynix ADR soared 13.8%. Investors returned to technology stocks amid renewed optimism that the artificial intelligence investment cycle remains intact, despite recent volatility. Market analysts attributed the semiconductor sector's recent decline to a healthy price correction following rapid gains rather than a fundamental deterioration of AI investment themes, with UBS reporting that hedge funds reduced semiconductor long positions by approximately 5% of total market value—a record level of position unwinding that suggests speculative selling pressure may be nearing exhaustion.
Semiconductor Stocks Post Largest Single-Day Gain in a Month
The Philadelphia Semiconductor Index surged 5.2% on local time July 21, marking its largest single-day increase in a month. The VanEck Semiconductor ETF (SMH) rose 4.5%. Intel climbed 8.6% after announcing additional restructuring plans, while Micron gained 12.2%, Marvell Technology advanced 6.7%, and Astera Labs increased 3.5%. Nvidia rose 2% after stating that its latest AI chips have begun shipping to customers. SK Hynix ADR jumped 13.8%.
Adam Turnquist of LPL Financial stated that the recent correction "appears closer to a healthy price adjustment following a surge rather than fundamental damage to the AI investment theme." UBS Trading Desk diagnosed that the semiconductor stock decline phase is nearing its end, presenting opportunities to increase positions again. According to UBS Prime Brokerage, hedge funds reduced momentum stock and semiconductor long positions by approximately 5% based on total market value—the largest level of position liquidation on record. Market analysts note that the possibility of stock prices forming a bottom has increased as speculative selling has been substantially absorbed.
Over 90% of S&P500 Companies Reporting Beat Earnings Estimates
Corporate earnings supported investor sentiment on local time July 21. Industrial company 3M reported second-quarter results exceeding market expectations, driving its stock up 7.2%. General Motors also saw its stock rise 4.9% as both revenue and earnings per share surpassed forecasts. According to Bloomberg data, over 90% of S&P500 companies that have reported earnings to date exceeded market profit estimates.
Market attention is shifting to the Magnificent 7 earnings reports beginning this week. Alphabet and Tesla will release results on July 23, followed by Microsoft, Meta Platforms, Apple, and Amazon in the following week. Brett Kenwell, investment analyst at eToro, stated: "The next two weeks will be an important earnings season not only for technology stocks but for the entire market. Investors are no longer just looking at whether companies can withstand uncertainty—they are demanding growth and future earnings outlooks that can justify high corporate valuations."
Mark Haefele, Chief Investment Officer at UBS Global Wealth Management, said: "Considering corporate profit growth, global stock markets have room for further gains," but added: "Geopolitical risks and inflation concerns remain, so diversification is important as differentiation among stocks may intensify."
Middle East Tensions Drive Oil Prices Higher
Middle East developments remain a market variable. US Central Command (CENTCOM) continued strikes on Iran for the 10th consecutive day after US President Donald Trump declared the end of the ceasefire. Iran and pro-Iranian Houthi rebels continued responses targeting US forces and regional maritime transportation. Market reports emerged of a 10-day ceasefire mediation proposal between the United States and Iran, raising expectations for a diplomatic solution.
International oil prices continued their upward trend reflecting Middle East tensions. On local time July 21, September delivery Brent crude futures closed at $91.01 per barrel on the ICE Futures Exchange, up 2.01% from the previous session. August delivery West Texas Intermediate (WTI) crude futures on the New York Mercantile Exchange also closed at $84.91 per barrel, up 2.02%. Rising oil prices increased concerns about inflation and additional interest rate hikes by the Federal Reserve, pushing up US Treasury yields. However, the New York stock market closed higher as AI optimism and corporate earnings expectations offset these concerns.
FAQ
What caused US stock markets to rally on local time July 21?
US stock markets rallied on local time July 21 due to a sharp rebound in semiconductor stocks and corporate earnings exceeding expectations. The Nasdaq Composite rose 1.29% to 25,837.21, while the Philadelphia Semiconductor Index surged 5.2%—its largest single-day gain in a month. Investors returned to technology stocks amid renewed optimism that the AI investment cycle remains intact, with over 90% of S&P500 companies reporting earnings to date beating market estimates.
Which semiconductor stocks posted the largest gains on local time July 21?
SK Hynix ADR jumped 13.8% on local time July 21, posting the largest gain among major semiconductor stocks. Micron gained 12.2%, Intel rose 8.6% after announcing additional restructuring plans, Marvell Technology advanced 6.7%, Astera Labs increased 3.5%, and Nvidia climbed 2% after stating its latest AI chips began shipping to customers. The VanEck Semiconductor ETF (SMH) rose 4.5%.
When will the Magnificent 7 technology companies report earnings?
Alphabet and Tesla will release earnings results on July 23. Microsoft, Meta Platforms, Apple, and Amazon will report earnings in the following week. According to Brett Kenwell of eToro, the next two weeks represent an important earnings season for technology stocks and the entire market, as investors demand growth and future earnings outlooks that justify high corporate valuations.
