Of all venture stages, Series A shows the steepest drop-off point. Specifically, of all companies that raised Seed rounds in the five-year period from 2015 to 2020, only 45% successfully raised Series A.
The most common cause of drop-off is simply company performance. Most companies are unable to achieve the growth metrics that are typically required for Series A.
For companies that hit exciting performance milestones, a sizeable drop-off stems from an inability to work capital markets. In Robotics or Consumer, for instance, raising capital has historically been much harder than for B2B SaaS or Fintech. Relative to the Seed landscape, we believe Series A is distinct in the following ways.

In how founders manage their financing strategy, Series A rounds generally require a lot more sophistication than do seed rounds. From targeting to process, and from narrative to collateral, the general skill set required at Series A is fundamentally different from prior rounds.