Stock Market Today: Live Updates

Traders on the floor of the New York Stock Exchange, May 27, 2026.

U.S. stocks rebound as chipmakers rally

U.S. equities advanced Monday as chip stocks bounced back from Friday’s rout and as the White House sought to preserve a fragile cease-fire amid renewed strikes tied to Iran and Israel. The S&P 500 rose about 0.7%, the Nasdaq Composite gained 1.1%, and the Dow Jones Industrial Average added roughly 135 points, or 0.3%.

Semiconductor shares led the turnaround. Micron Technology climbed more than 9% after dropping 13% on Friday, while other bellwethers like Nvidia and Broadcom also moved higher. The recovery followed a bruising session to end last week, when the Nasdaq slid 4.2%—its worst day since April 2025—as investors took profits and questioned whether chip valuations had gotten ahead of a still-uncertain economic backdrop. The iShares Semiconductor ETF rebounded about 5% Monday after a 10% plunge Friday, its steepest single-day decline in more than six years.

Global markets under pressure

Overseas, the sharp U.S. tech sell-off rippled through Asia-Pacific markets. South Korea’s Kospi index fell more than 8% to close at 7,484.41, while Japan’s Nikkei 225 lost 3.85% to 64,024.6. Major European indices were slightly lower in early trading, with sentiment tempered by both Wall Street’s Friday slide and ongoing geopolitical headline risk.

Cease-fire concerns and the oil bid

Fresh reports of Iranian strikes on Sunday rekindled worries about the durability of a cease-fire framework involving Washington and Tehran. In response to attacks linked to Iran, Israel said it carried out a large-scale strike against strategic defense assets. President Donald Trump said Israel and Iran were seeking an immediate cease-fire and indicated negotiations were continuing despite the escalations. He had earlier called on both sides to halt hostilities.

Iran’s Foreign Ministry said Monday that its military operations against Israel had concluded, while warning it could resume hostilities if Israeli attacks in Lebanon continued. Crude oil edged higher on the developments, with West Texas Intermediate up less than 1% around $91 a barrel after touching session highs.

Momentum meets macro reality

The market’s leadership remains concentrated in growth and momentum themes, particularly in semiconductors and AI-adjacent names. That outperformance has persisted even as interest rates remain elevated and inflation progress has been uneven. As one strategist noted, the market can become “a victim of its own success” if expectations run too far ahead of fundamentals and price pressures remain sticky.

Friday’s sell-off highlighted how quickly positioning can unwind when sentiment is stretched. Monday’s rebound underscores that dip-buying appetite is still present, but resilience will likely hinge on incoming data and how higher-for-longer rate dynamics intersect with corporate earnings and margins.

What to watch this week

• Inflation data: Fresh readings on prices will shape expectations for the path of interest rates and could influence equity leadership, particularly among rate-sensitive growth stocks.
• Semiconductor volatility: After outsized moves on Friday and Monday, traders will watch whether chip stocks can stabilize and broaden the market’s advance beyond a handful of mega-cap names.
• Energy prices: Any further geopolitical flare-ups could keep crude supported, with potential knock-on effects for inflation expectations and cyclical sectors.
• High-profile listing activity: The anticipated public debut of SpaceX on Friday is expected to be among the largest in Wall Street history and could become a high-visibility test of risk appetite and AI-related valuations.
• Market breadth and factor leadership: Sustained gains may require broader participation from cyclicals and small caps, not just momentum-driven themes.

Bottom line

Stocks started the week on firmer footing as chipmakers rebounded and investors weighed geopolitical headlines against a still-resilient corporate and economic backdrop. With inflation data and a marquee listing on deck, the next few sessions could set the tone for whether the market’s momentum can extend—or whether elevated expectations give way to renewed volatility.