Woofun AI reports that the combined market capitalization of the seven major US technology companies declined by approximately $797 billion on Thursday, marking the largest single-day drop since April 2025. The group's total valuation has contracted by roughly $2 trillion from its peak in late May. Tesla shares fell 15% and Alphabet dropped 7.1%, as investors reacted to Alphabet's raised capital expenditure guidance and Tesla's plans for increased capital investment. Market attention now shifts to Microsoft, Amazon, and Meta Platforms, which will report earnings next week, with focus on whether heavy AI infrastructure spending yields commercial returns.