Analysis of US-based venture-backed companies that went public in roughly the past two years shows that top 40 companies are now valued at around $1.1T (Joanna Glasner/Crunchbase News)

Joanna Glasner / Crunchbase News:
Analysis of US-based venture-backed companies that went public in roughly the past two years shows that top 40 companies are now valued at around $1.1T  —  It's hard to imagine, but there was a time not too long ago when billion-dollar startups were exceedingly rare.