Broad S&P 500 and technology-heavy Nasdaq's composite index both closed Wednesday's trading at a minus of 0.3 percent. The Dow Jones industrial index fell 0.4 percent.
Nvidia's share continued downward and fell back 0.8 percent. The decline comes after Monday's announcement that the semiconductor giant has entered into a strategic partnership with Open AI, the company behind the chat robot Chat GPT, with a planned investment of up to $100 billion.
This has led to renewed concern about a possible AI bubble, where the exchange is circular between different AI companies. Nvidia, for example, manufactures the advanced chips that Open AI and other players in the sector need for their data centers.
Oracle fell even more, minus 1.7 percent. Micron Technology, whose quarterly report on Tuesday was not impressive enough to calm the market, went down 2.8 percent.
Canadian mining company Lithium Americas soared as much as 95.8 percent. Reuters reported during the day that the White House is investigating the possibility of entering as an owner in the company as part of the US's efforts to secure access to important minerals.
