The NASDAQ-100 is widely followed as a measure mainly of the big tech and social media stocks that make up the index.

Stocks: Real-time U.S. stock quotes reflect trades reported through Nasdaq only; comprehensive quotes and volume reflect trading in all markets and are delayed at least 15 minutes. International ...

Stocks: Real-time U.S. stock quotes reflect trades reported through Nasdaq only; comprehensive quotes and volume reflect trading in all markets and are delayed at least 15 minutes. International ...

Today, we present a new index that shows what factors really drive ... lead directional shifts in IPO activity (green bars in Chart 1) going back to the early 1990s. On average, the index leads ...