U.S. tech stocks continued their decline amid concerns over rising artificial intelligence (AI) development costs. Intel's stock price, in particular, fell by as much as 30% in early Friday trading, potentially losing over $130 billion in market capitalization, after the company warned of a weak PC market and forecast lower-than-expected fourth-quarter revenue. The Nasdaq index opened down 2.5% on Friday, reaching a new two-month low. The previous day, Google parent company Alphabet saw its stock price plunge by over $500 billion due to AI summaries impacting its core search advertising revenue; Amazon's stock price also fell by as much as 6%.