June 25 (Reuters) - The Nasdaq and Standard & Poor's indexes fell at the close of trading on Wall Street on Thursday, weighed down by losses in shares of major technology companies, while the Dow Jones closed higher as investors digested new economic data.

Technology stocks relinquished their early gains to decline, weighing on the Nasdaq, as investors worried about the spending of tech giants on artificial intelligence and who would bear the costs. These concerns overshadowed positive signals regarding AI demand from Micron and Qualcomm.

The Nasdaq index is on track to record its biggest monthly decline since March 2025.

Apple's stock fell after it raised prices on iPads and MacBooks to offset soaring costs for memory chips and storage. Shares of Nvidia, Microsoft, and Alphabet also declined.

In contrast, Micron's stock rose significantly after its earnings and forecasts exceeded Wall Street estimates.

Carol Schleif, chief investment officer at BMO Family Office, said, "The market has realized that exceptional profits and revenues for one company mean that someone else will pay the price later... For Micron to achieve this kind of profit and revenue, it comes at the expense of someone else."

Preliminary data showed the Standard & Poor's 500 index falling 1.05 points, or 0.01 percent, to close at 7357.17, while the Nasdaq Composite lost 120.07 points, or 0.47 percent, to close at 25356.57.

The Dow Jones Industrial Average rose 87.33 points, or 0.17 percent, to 51,936.23.