The Nasdaq is down more than 6% from its high on July 10. The next day, lower than forecast US inflation first triggered the dramatic market rotation.
Alphabet and Tesla’s results would “feed concerns” the broader market had become too reliant on the Magnificent Seven of big tech stocks, said Charlie McElligott, an analyst at Nomura.
“Risk sentiment remains fragile,” he added.
UBS on Wednesday reiterated its “sell” rating on Tesla’s stock, warning that the “timeframe and probability of success” of plans to roll out self-driving “robotaxis” remains unclear.
On Tuesday, Tesla’s billionaire chief executive Elon Musk officially pushed back the unveiling of the vehicles from August to October.
However, he claimed that the project could still take the company’s valuation as high as $5 trillion (NZ$8.4t), about six times its current market value.
Google’s capital spending and outlook was being used as an indicator for the wider trend of backing companies with links to generative AI, said analysts.
All of the so-called Magnificent Seven were lower on Wednesday.
Chipmaker Nvidia, which has more than doubled this year, was down by almost 5%.
Facebook parent Meta slid more than 4% while Apple and Microsoft fell more than 3%.
“We’ve got some of the Magnificent Seven digging their heels in, in terms of spending on AI,” said Kevin Gordon, a senior investment strategist at Charles Schwab, “and if they’re not wildly exceeding [earnings] expectations, that’s when you get some profit-taking.”
Wall Street’s blue-chip S&P 500 fell 1.8%. The Russell 2000 index of smaller companies, which has recently rallied strongly on hopes of interest cuts as soon as September, fell just 0.5%.
Wednesday’s sell-off comes as “the macro picture appears to be cracking”, said JPMorgan analysts in a note to clients, highlighting weakening regional activity data and a housing market that continued “to crumble”.
US Treasuries rallied as investors sought safe assets and ramped up bets on Federal Reserve interest rate cuts.
Two-year yields, which are highly sensitive to rate expectations, fell 0.04 percentage points to 4.41%, near their lowest levels since February.
Big Tech companies including Meta, Amazon and Apple will report earnings next week.
Written by: George Steer in London and Jennifer Hughes in New York
© Financial Times