Chip Stocks Are Back Up — Here's What's Going On with AI Spending and Your Money

Micron Technology (MU), SanDisk, and Seagate led the gains among chip companies on August 18, 2026. Investors were feeling more confident about spending on artificial intelligence (AI) after a rough summer. Stocks generally rose that day, but so did Treasury yields — the interest rate the U.S. government pays to borrow money. When yields go up, it means borrowing costs are rising, which can weigh on stock prices. So two forces were tugging in opposite directions: excitement about AI growth, and worry about higher interest rates. (MarketWatch)

The rebound follows a bumpy stretch for chip stocks. On July 7, the Nasdaq — a stock index heavy with tech companies — closed sharply lower, dragged down by losses in Micron and other chipmakers. Investors were starting to doubt whether companies would keep spending big on AI. Even Samsung's record profit, reported the same day, didn't help. By mid-July, chip stocks had fallen about 20% from a June record high. Micron alone had dropped 25% from its all-time peak. World stock indexes tumbled on July 17, with major chip names falling for a third day in a row as investors pulled back. (Reuters; Reuters; Reuters; Reuters via Facebook)

But Micron's actual business results tell a different story than the stock price did. Micron reported revenue (total sales) of $23.86 billion for its second fiscal quarter of 2026, up from $13.64 billion a year earlier. Its gross margin — how much of each dollar of sales is left after paying to make the product — was about 81%. Then Micron posted record results for its third fiscal quarter: revenue of $41.46 billion, up from $23.86 billion the quarter before. That's a jump of more than 73% in one quarter. (Micron Investor Relations; Micron Investor Relations)

On August 13, five days before the latest stock gains, Micron Ventures launched a $250 million fund to invest in next-generation AI companies. The fund signals that Micron itself still believes in the AI build-out, even as the stock market swung up and down through the summer. (Micron Investor Relations)

The demand for AI keeps growing. Anthropic, the company behind the Claude AI assistant, saw its annualized revenue surpass $30 billion in 2026, up from roughly $9 billion earlier. The company raised $30 billion in funding at a $380 billion valuation in February, then raised another $65 billion at a $965 billion valuation in late May. The investors included Altimeter Capital, Dragoneer, Greenoaks, and Sequoia Capital. Claude Code, one of Anthropic's products, has grown to over $2.5 billion in annualized revenue, more than doubling since the start of 2026. (Anthropic; Anthropic; Anthropic)

Anthropic has also moved into specific industries, releasing ten ready-to-use templates for financial-services tasks in May, including building pitchbooks and screening customers for compliance. That expansion suggests AI demand is growing beyond general-purpose tasks into specialized work that requires lots of memory and fast data processing. (Anthropic)

Here's why the tension matters: the same August 18 session that saw chip stocks rise also featured rising Treasury yields. Yields had similarly gone up in mid-July when stocks dipped. When borrowing costs rise, they reduce the value of a company's future earnings — think of it like a higher interest rate on a loan making future profits worth less in today's dollars. Chip companies, which are expected to earn a lot of their money years from now, are especially sensitive to this. Micron's shares had dropped earlier on concerns about higher borrowing costs. (MarketWatch; MarketWatch)

In my view, the summer's price swings look less like investors rethinking AI demand and more like a bout of rate-driven volatility on top of a business that is genuinely speeding up. Micron's revenue growth from one quarter to the next is the kind of number that either justifies the earlier stock rally or sets the bar so high that falling short would be painful. The 25% drop from the peak, then this week's rebound, looks like a market adjusting to rapidly changing expectations in both directions — not a breakdown in the AI spending story.

The key numbers for anyone tracking this: Micron's Q3 revenue nearly doubled from a year earlier, Anthropic's revenue has tripled, and chip stocks have recovered from a 20% drop in about six weeks. The $250 million Micron Ventures fund is small compared to Micron's overall revenue, but it puts the company's money into the AI startup world at a time when private AI companies are being valued at enormous sums — Anthropic's $965 billion valuation is the clearest sign of that.