AI Rally Returns as Nasdaq Hits Record High

Technology stocks have returned to the centre of global market attention as renewed optimism over artificial intelligence helped push the Nasdaq Composite to a record closing high.

The Nasdaq gained 2.26% on Monday, marking its first record close since June 2. The S&P 500 also advanced 1.49%, while the Dow Jones Industrial Average gained 0.71%.

The rally was led by semiconductor and AI-related companies, with Advanced Micro Devices rising around 10% and reaching a $1 trillion market valuation for the first time.

Intel gained more than 12%, while Arm Holdings climbed 17%. The PHLX Semiconductor Index rose 4.3%.

Why AI Stocks Are Rebounding

The latest rally follows a period of uncertainty around technology valuations and AI development.

Investors had previously reacted to warnings from leaders of major AI companies about the pace and safety of AI development.

That contributed to a sharp technology selloff.

However, recent market developments have encouraged investors to reassess the strength of AI-related spending.

The launch of Meta's Muse AI assistant has helped renew enthusiasm around AI agents and the computing infrastructure required to support them.

Investors are increasingly focusing on whether demand for CPUs, GPUs, data centres and related semiconductor infrastructure can continue expanding.

AMD Enters the Trillion-Dollar Club

Advanced Micro Devices was one of the clearest beneficiaries of the latest rally.

AMD shares gained approximately 10%, taking the company's market capitalisation above $1 trillion for the first time.

The move reflects the broader importance investors are placing on semiconductor demand as AI adoption expands.

The market is increasingly looking beyond individual AI applications and toward the infrastructure required to operate them.

• Data centres
• Advanced processors
• AI accelerators
• Networking equipment
• Cloud infrastructure
• Power systems
• Semiconductor manufacturing

Lower Oil Prices Improve the Macro Backdrop

The AI rally is not happening in isolation.

Falling oil prices have also improved the broader macroeconomic backdrop for equities.

Brent crude dropped more than 3% in the previous session before stabilising around $100.22 per barrel on Tuesday.

The decline has helped reduce some immediate inflation concerns and contributed to lower Treasury yields.

This is particularly relevant for technology stocks because high interest rates can place pressure on growth-oriented valuations.

When bond yields decline, the discount applied to future corporate earnings can also become less restrictive.

Treasury Yields Provide Additional Support

The U.S. 10-year Treasury yield moved below the psychologically important 5% level as oil prices declined.

The combination of lower crude prices and lower yields has therefore created a more supportive short-term environment for equities.

This is an important change from earlier in September.

Previously, rising oil prices and higher Treasury yields were weighing on equity markets.

Now, the direction has temporarily reversed:

Lower oil → Lower inflation pressure → Lower yields → Improved conditions for growth stocks

However, this relationship could change quickly if crude prices rise again or the Federal Reserve adopts a more aggressive policy stance.

The Fed Remains in the Background

Despite the strong equity rally, monetary policy has not disappeared from the market narrative.

The Federal Reserve raised interest rates last week and indicated that further increases could still be required to contain inflation.

Markets are currently pricing a growing possibility of another hike in October.

That means technology investors face a delicate balance.

On one side, strong AI spending and semiconductor demand can support earnings expectations.

On the other, higher interest rates can put pressure on equity valuations.

Asian Technology Stocks Join the Move

The renewed AI enthusiasm has extended beyond Wall Street.

Asian technology markets advanced strongly on Tuesday, with South Korea and Taiwan among the leading markets.

South Korean stocks rose nearly 2%, while Taiwan gained around 1.3%.

Chinese technology stocks and Hong Kong-listed AI companies also advanced.

The move suggests that investors are treating AI as a global technology theme rather than a purely U.S. market story.

AI Demand Versus Valuation Risk

The biggest question for technology investors is whether the current rally is supported by sustainable earnings growth.

AI-related companies have already experienced significant valuation expansion.

Strong demand for chips and data-centre infrastructure can support earnings, but expectations are also becoming higher.

This creates two potential risks.

First, companies may struggle to meet increasingly ambitious earnings expectations.

Second, any renewed increase in Treasury yields could reduce the valuation premium assigned to long-duration growth stocks.

As a result, investors are likely to focus increasingly on actual revenue growth, capital expenditure and AI-related demand rather than simply the popularity of AI products.

What Could Happen Next?

Scenario 1: AI Demand Remains Strong

If semiconductor demand and corporate AI investment continue expanding, technology stocks could maintain their momentum.

Positive earnings revisions could provide further support to the sector.

Scenario 2: Yields Rise Again

If inflation concerns return and Treasury yields move higher, growth-stock valuations could come under renewed pressure.

Technology shares could become more sensitive to Federal Reserve commentary and economic data.

Scenario 3: AI Expectations Cool

If investors begin questioning the pace of AI monetisation or corporate spending, some of the recent gains could reverse.

The most highly valued AI-related stocks could become particularly sensitive to earnings disappointments.

What Traders Should Watch

• Nasdaq Composite
• US Tech 100
• S&P 500
• PHLX Semiconductor Index
• AMD and other major chipmakers
• U.S. 10-year Treasury yield
• Brent crude
• Federal Reserve commentary
• Corporate AI spending
• Semiconductor earnings guidance

Market Outlook

The return of AI enthusiasm has once again placed technology stocks at the centre of global equity markets.

The Nasdaq's record close and the sharp gains across semiconductor stocks demonstrate how quickly sentiment can change when investors see renewed evidence of AI demand.

At the same time, lower oil prices and retreating Treasury yields have provided an additional macroeconomic tailwind.

The key challenge now is sustainability.

For the rally to continue, investors will likely need to see evidence that AI spending is translating into durable revenue and earnings growth while interest rates remain manageable.

The coming sessions could therefore reveal whether the latest AI surge represents another short-term burst of optimism or the beginning of a broader technology-market expansion.