The tech sell-off has seen the Nasdaq plunge 3.4% in two days. Now what? Should we be worried about a Nasdaq stock market crash? You’re reading a free article with opinions that may differ from The Motley Fool’s Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources , and more. Learn More The Nasdaq Composite Index (NASDAQ: .IXIC) closed 0.7% lower yesterday (overnight Aussie time). Following Tuesday's 2.8% decline, that sees the tech-heavy index down 3.4% in two trading days. It's a similar story for the Nasdaq-100...