U.S. stock index futures reached their intraday lows as concerns regarding artificial intelligence (AI) resurfaced in the market prior to Alphabet's earnings report.

Futures for the tech-heavy Nasdaq 100 index fell by 0.8%, while S&P 500 index futures declined by 0.3%.

Note: Alphabet is scheduled to release its earnings after the market closes, marking the beginning of the earnings season for major technology companies.