The Nasdaq and S&P 500 declined on June 17, 2026, as investors rotated out of semiconductor stocks into financials and other defensive sectors www.kapitales.com.au . This shift reflects growing caution regarding AI capital expenditure risks and weakening consumer data seekingalpha.com .

Tech Sell-Off

Semiconductor gains that fueled earlier rallies are now facing profit-taking, signaling a potential market peak for the tech-heavy indices in June 2026 seekingalpha.com .