The Nasdaq Composite finished the day 50.40 points, or 1.2%, lower at 4,226.39, paring some of the heavy losses at session lows. Biotech and internet stocks were the biggest losers on the tech-heavy index.
The S&P 500 index ended the day 9.08 points, or 0.5%, lower at 1,857.44. The benchmark index bounced after nearing a key support level of 1,850.
The Dow Jones Industrial Average shed 26.08 points, or 0.2%, to 16,276.69.