The final week of June made one thing clear: investors continue to navigate between two key forces shaping the markets—an inflation rate that remains above the Federal Reserve's target and a technology sector that is beginning to show greater volatility after several months of strong gains.

While the U.S. economy continues to demonstrate resilience, Wall Street is facing an environment where elevated valuations, interest rate expectations, and corporate earnings are once again becoming the main drivers of market performance during the second half of the year.

Inflation remains the market's biggest challenge

One of the week's most anticipated events was the release of the Personal Consumption Expenditures (PCE) Price Index, the Federal Reserve's preferred measure of inflation.

The data showed that inflation remains above the Fed's 2% target, although the results were broadly in line with market expectations. Core PCE remained relatively stable, while headline inflation continued to reflect higher energy costs recorded during May.

The report reinforced expectations that the Federal Reserve could still raise interest rates later this year if economic data continue to point to a resilient economy.

The U.S. economy continues to show strength

Another important development was the revised estimate of first-quarter U.S. GDP growth.

The updated figures indicated that the economy performed better than initially estimated, reinforcing the view that economic activity remains strong despite the current high interest rate environment.

For investors, this creates a mixed outlook:

• A stronger economy generally supports corporate earnings.

• However, it also reduces the urgency for the Federal Reserve to begin cutting interest rates.

In other words, stronger economic data may also mean that restrictive monetary policy will remain in place for longer than previously expected.

Semiconductor companies return to the spotlight

The technology sector remained at the center of investors' attention, although trading became noticeably more volatile than in previous months.

Micron Technology reported quarterly earnings that exceeded expectations and confirmed that demand related to artificial intelligence remains exceptionally strong, particularly for high-performance memory products used in data centers.

However, the initial optimism quickly gave way to profit-taking.

By Friday, several semiconductor companies had pulled back as investors reassessed whether current valuations across the AI sector remain justified.

Artificial intelligence continues to be one of the market's strongest growth themes, but investors are increasingly demanding tangible financial results to support elevated expectations.

Wall Street becomes more selective

After several months during which nearly the entire technology sector moved higher together, investors are becoming increasingly selective.

Companies capable of delivering revenue growth, expanding profit margins, and generating strong cash flow continue to attract investor interest, while businesses trading at demanding valuations face greater pressure.

This shift suggests that market participants are placing greater emphasis on fundamentals rather than future expectations alone.

Treasury Yields continue to send important signals

The bond market continued to react to this week's economic releases.

U.S. Treasury yields remained elevated, reflecting investors' expectations that interest rates may stay higher for an extended period.

Movements in the bond market continue to play a significant role in determining the performance of growth-oriented sectors, particularly technology stocks.

Oil prices lose some of their influence

Following the sharp volatility seen in previous weeks, oil prices stabilized during the week.

Easing geopolitical tensions helped reduce concerns about potential disruptions to global energy supplies, providing some relief to inflation expectations.

Although energy remains an important variable for the global economy, this week investors focused primarily on economic data and corporate earnings.

What's on Wall Street's radar this week

Investors will continue monitoring several key events that could shape the beginning of the second half of the year:

• The U.S. Employment Report.

• Additional comments from Federal Reserve officials.

• Inflation data and Treasury yield movements.

• Upcoming corporate earnings, particularly in the technology and consumer sectors.

• Continued developments in the artificial intelligence and semiconductor industries.

Inflation continues to influence Federal Reserve policy decisions, while the resilience of the U.S. economy makes near-term interest rate cuts less likely.

At the same time, the technology sector faces a more demanding environment. Investors are no longer satisfied with AI-related optimism alone—they increasingly expect companies to demonstrate sustainable growth and solid financial performance.

As the second half of 2026 begins, Wall Street will remain focused on every economic release, every signal from the Federal Reserve, and every earnings report that helps determine whether current market valuations remain justified.

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Sources: Bloomberg, Reuters Energy, CNBC Markets, ISM Manufacturing Report