Stock Market Today, June 23: Sandisk Leads Tech Stock Slide as South Korea Jitters Trigger Global Pullback at Midday

Source The Motley Fool

At midday, the S&P 500 (SNPINDEX:^GSPC) fell 1.06% to 7,393.73, the Nasdaq Composite (NASDAQINDEX:^IXIC) sank 1.56% to 25,759.41 on an intensifying technology rout. The Dow Jones Industrial Average (DJINDICES:^DJI) edged up 0.09% to 51,758.04.

Gold prices fell 1.35% to $4134.70, and the 10-Year Treasury yield slid 0.03% to 4.48% as of midday. Technology stocks saw the biggest declines, while healthcare, consumer defensive, and utilities gained.

Today's biggest moves

Sandisk tumbled over 12%, and Western Digital dropped 8% this morning as a sell-off in South Korean memory giants spread to U.S. chipmakers. Micron Technology dropped almost 11% on sector-wide concerns ahead of tomorrow’s earnings.

IBM bucked the trend, rising almost 5% following a JPMorgan upgrade. Walmart stock increased after the retail firm signed a 15-year nuclear power supply deal with Constellation Energy.

What this means for investors

Artificial intelligence (AI) jitters pressured stocks this morning as a global technology rout intensified. South Korea’s Kospi, which tracks the country’s largest firms, fell almost 10% when a combination of factors came to a head. AI valuation concerns met regulatory changes and forced liquidations, and the chip-heavy index saw its biggest drop in over three months.

Major U.S. indexes set new records this year, with tech strength powering new highs, even as inflation uncertainty grew and consumer confidence fell. It is important to view today’s pullback through that lens and focus on where these AI stocks may be in five to 10 years or more. Rate concerns are understandably driving risk-off sentiment right now, but that doesn’t mean that South Korea’s stock market plunge will be replicated in the U.S.

Should you buy stock in Invesco QQQ Trust right now?

Before you buy stock in Invesco QQQ Trust, consider this:

The Motley Fool Stock Advisor analyst team just identified what they believe are the 10 best stocks for investors to buy now… and Invesco QQQ Trust wasn’t one of them. The 10 stocks that made the cut could produce monster returns in the coming years.

Consider when Netflix made this list on December 17, 2004... if you invested $1,000 at the time of our recommendation, you’d have $393,037!* Or when Nvidia made this list on April 15, 2005... if you invested $1,000 at the time of our recommendation, you’d have $1,280,627!*

Now, it’s worth noting Stock Advisor’s total average return is 913% — a market-crushing outperformance compared to 208% for the S&P 500. Don't miss the latest top 10 list, available with Stock Advisor, and join an investing community built by individual investors for individual investors.

See the 10 stocks »

*Stock Advisor returns as of June 23, 2026.

Emma Newbery has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Constellation Energy, International Business Machines, Micron Technology, Walmart, and Western Digital. The Motley Fool has a disclosure policy.

Disclaimer: For information purposes only. Past performance is not indicative of future results.
placeholder
Deutsche Bank Slashes Gold Price Forecast by 22%: Wall Street Bulls Retreat, Fed Rate Hike Expectations Become Biggest Drag Wall Street investment banks are collectively cooling on their bullish sentiment toward gold. Following Goldman Sachs ( GS) sharply cutting its gold price targets last week, Deutsche Bank
Author  TradingKey
8 hours ago
Wall Street investment banks are collectively cooling on their bullish sentiment toward gold. Following Goldman Sachs ( GS) sharply cutting its gold price targets last week, Deutsche Bank
placeholder
Japanese Yen flatlines near 161.50 as traders are on high alert for interventionThe USD/JPY pair holds steady near 161.55 during the early Asian session on Tuesday. Progress in US–Iran peace talks and intervention fears from the Japanese authorities might cap the upside for the pair.
Author  FXStreet
17 hours ago
The USD/JPY pair holds steady near 161.55 during the early Asian session on Tuesday. Progress in US–Iran peace talks and intervention fears from the Japanese authorities might cap the upside for the pair.
placeholder
Nvidia 2026 Shareholder Meeting Preview: Can Stock Price Hit New Highs? How Blackwell, Vera Production Ramps Will Determine Future Revenue?This Wednesday (June 24), NVIDIA (NVDA) will hold its 2026 annual meeting of stockholders online. The focus of this meeting will be the production ramp-up of Blackwell and the brand-new V
Author  TradingKey
Yesterday 10: 23
This Wednesday (June 24), NVIDIA (NVDA) will hold its 2026 annual meeting of stockholders online. The focus of this meeting will be the production ramp-up of Blackwell and the brand-new V
placeholder
Morgan Stanley’s Latest Assessment: Three Variables for Gold’s Rise to $5,200 — Hawkish Fed, ETF Flows, and Middle East TurmoilMorgan Stanley ( MS )'s latest precious metals research report shows that while continuous gold purchases by global central banks have provided a solid floor of support, gold ( XAUUSD )'s
Author  TradingKey
Yesterday 09: 04
Morgan Stanley ( MS )'s latest precious metals research report shows that while continuous gold purchases by global central banks have provided a solid floor of support, gold ( XAUUSD )'s
placeholder
Qatar and Pakistan: High-level committee agrees on roadmap to final deal within 60 daysThe US-Iran peace talks took place on Sunday in Bürgenstock, Switzerland, with delegations from Iran, the United States, Qatar, and Pakistan participating.
Author  FXStreet
Yesterday 02: 13
The US-Iran peace talks took place on Sunday in Bürgenstock, Switzerland, with delegations from Iran, the United States, Qatar, and Pakistan participating.
goTop
quote