The semiconductor sector led US equity markets lower at the open on Wednesday, erasing the gains recorded the previous day.
The pullback signals a shift in sentiment as traders grow increasingly cautious ahead of the European Central Bank's policy meeting.
Investors are closely monitoring the ECB for clues on the future path of interest rates.
The central bank's communication strategy has left markets guessing, creating an environment of uncertainty that is dampening risk appetite across growth-sensitive sectors.
The reversal in chip stocks highlights the fragility of the recent rally.
After a day of strong performance on Tuesday, the sector faced immediate selling pressure as traders reassessed the macroeconomic backdrop.