An index of stocks listed on the Nasdaq exchange, with ~50% technology sector weight, earning it the 'tech index' moniker. • Includes Big Tech: Apple, NVIDIA, Microsoft, Amazon, Meta, Google, Tesla • More volatile than S&P 500, higher interest rate sensitivity • Underperforms S&P 500 during rate hikes, outperforms during rate cuts • Tends to surge on AI/semiconductor themes The most popular overseas index among Korean retail investors, serving as a barometer for cross-border investment trends.