Wall Street ends lower on semiconductor selloff as AI spending concerns mount

By Abigail Summerville, Twesha Dikshit and Joel Jose

June ‌23 (Reuters) - The Nasdaq and ​the S&P ​500 closed at more than one-week lows on Tuesday, dragged down by sharp losses in semiconductor stocks as investors scrutinized growing debt-funded AI spending and braced for a more hawkish U.S. Federal Reserve.

The Dow ‌ended slightly lower.

The Philadelphia SE Semiconductor index tumbled 7.9% and the S&P 500 information technology ⁠sector index slipped 3.7%.

Nvidia dropped 4.1% and Alphabet fell 1% while chipmakers Intel, Marvell Technology and Advanced Micro Devices lost between 5.8% and 9.4%.

“Some of ‌the news lately about AI raises questions ‌about all the spending that’s being done and the capex and ramping of the capacity for semiconductors," said Thomas Martin, senior portfolio manager at Globalt.

Concerns over hyperscalers' debt-funded AI spending have contributed to the selloff. Elon Musk's SpaceX, ​which debuted this month, has joined a list of megacaps tapping the bond market to raise capital.

Shares of SpaceX rose 1%, following losses in the last three sessions.

Memory chipmakers Micron Technology and SanDisk, among the best performers on ⁠the S&P 500 this year, both fell around 13%.

Micron's earnings on Wednesday could offer clues on the outlook for the memory and AI chip sector after a ​searing rally this year.

The Dow Jones Industrial Average fell 47.22 points, or 0.09%, to 51,665.49, the S&P 500 lost 107.32 points, or 1.44%, to 7,365.47 and the Nasdaq Composite lost 579.56 ​points, or 2.21%, to 25,587.04.

The CBOE Volatility Index, Wall Street's fear ‌gauge, hit an over-one-week high, climbing 2.23 points to 19.52.

Six of the 11 major S&P 500 sectors moved higher, with consumer staples rising the most at 1.8%. With highly priced tech ⁠shares coming under pressure recently, investors have shifted focus to other areas of the market.

Traders are increasingly betting on a second interest rate hike by the Fed by December, according to LSEG data, compared to expectations of just one 25-basis-point hike two weeks ago, as investors ⁠price in hawkish monetary policy under new Chair Kevin Warsh.

Personal Consumption Expenditures Price Index data, the Fed's preferred inflation gauge, is expected on ​Thursday.

Investors are also watching developments in the Middle East. The U.S. Senate backed legislation on Tuesday to halt U.S. military action against Iran, but it was unclear how it would affect the war as President Donald Trump's administration negotiates a peace agreement with Iran.

Declining issues ‌outnumbered advancers by a 1.31-to-1 ratio on the NYSE. There were 120 new highs and 187 new lows on the NYSE. On the Nasdaq, 2,181 stocks rose and 2,636 fell as ‌declining issues outnumbered advancers by a 1.21-to-1 ratio.

The S&P 500 posted 12 new 52-week highs and five new lows while the Nasdaq ⁠Composite recorded 132 new highs and 182 new ‌lows.

Volume on U.S. exchanges was 24.1 billion ​shares, compared with the 22.53 billion average for the full session over the last 20 trading days.

(Reporting by Abigail Summerville in New York and Twesha Dikshit and Joel Jose in Bengaluru; Editing by ‌Rod Nickel)

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