By Tharuniyaa Lakshmi and Purvi Agarwal
Oct 16 (Reuters) - US stock index futures were muted on Friday, as technology stocks came under fresh pressure on worries about cracks building in the AI trade, though a rise in Tesla shares and decline in oil prices offered support.
The electric vehicle maker rose 3% in premarket trading after unveiling a redesigned Roadster, powered by rocket-style thrusters, developed in collaboration with SpaceX.
Elon Musk's rocket and space technology company gained 1.2%.
Cautionary signs persisted in the AI sector as Nvidia-backed CoreWeave slipped 5.2%, after Thursday's rebound, on lingering concerns about the data centre operator's debt load.
Other neocloud firms Nebius Group and Iren dipped over 2.8% each while chipmakers Micron Technology and Intel fell 2.6% and 1.4%, respectively.
Reuters reported, citing people familiar with the matter, that some current Anthropic investors and prospective investors in its upcoming IPO are weighing a lower valuation, amid broader concerns over ballooning AI financing costs.
AI stocks have cratered this week as investors who have crowded into bets all along the AI supply chain worry that data centre operators might not turn profitable in time to repay debts, particularly with borrowing costs expected to rise.
Some of these stocks have risen sharply this year, helping push benchmarks S&P 500 and Nasdaq to record highs as recently as last week.
"When you've this incredibly bullish narrative matched with incredibly bullish outcomes but the stock declines, that is the sort of technical signal that tells you there's too many people in the pool," said James Athey, fixed-income portfolio manager at Marlborough.
The selloff in AI stocks sparked a rotation into defensive sectors such as healthcare on Thursday, helping the main indexes close slightly higher.
The S&P 500 and Nasdaq were set to post weekly losses as an AI-led rout, mixed earnings from big banks and inflation data weighed on sentiment through the week.
The Dow, however, remained on track for a weekly advance.
At 7:51 a.m. ET, Dow E-minis were down 20 points, or 0.04%, S&P 500 E-minis were up 3.5 points, or 0.04% and Nasdaq 100 E-minis were down 84 points, or 0.28%.
A nearly 1% fall in oil prices offered some support, though Brent crude remained above the $100-a-barrel mark. [O/R]
Hotter-than-expected consumer and producer inflation reports this week have confirmed that price pressures are broadening out beyond energy products.
Federal Reserve Chair Kevin Warsh also noted that a spending surge was boosting inflation. He, however, said the US economy remained resilient and was benefiting from an AI-driven investment boom.
Markets increasingly expect the Fed to keep interest rates unchanged this month.
Among other movers, property-casualty insurer Travelers dropped 4% after reporting third-quarter results. Varonis Systems climbed 2.6% as Thoma Bravo's Proofpoint agreed to buy the data security firm in a $6.3 billion all-cash deal.
(Reporting by Tharuniyaa Lakshmi and Purvi Agarwal in Bengaluru, additional reporting by Vidya Ranganathan; Editing by Joyjeet Das)
