U.S. seed startups face tougher path to Series A as jumbo rounds skew funding picture

Traders Union
All News
Business & Wealth
US seed startups face Series A hurdles

Highlights

U.S. startups closed 272 Series A rounds in Q3 2024, down 28% from 377 a year earlier, despite 114 global $100 million-plus Series A rounds driven mostly by AI.
Only 24% of 2023 and 16% of 2024 companies with seed rounds over $1 million advanced beyond seed, compared to 55% or more in 2020.
Series A investors now demand $2 million–$4 million in annual recurring revenue, lengthening the seed-to-Series A timeline beyond two years and increasing the importance of midsized venture funds.

Series A market tightens beneath AI megarounds

As reported by Crunchbase, global startups have closed at least 114 Series A rounds of $100 million or more so far this year, with more than 70% of those financings going to AI companies.

That activity masks a weaker underlying market for most founders. U.S. startups closed 272 Series A rounds in the third quarter, down about 28% from 377 a year earlier, while seed activity proved more resilient at 984 rounds compared with 1,059. The disparity suggests that a small number of outsized deals are obscuring a narrower path from seed to Series A.

Seed round sizes are still rising. Crunchbase data shows the median U.S. seed round reached about $3 million last year, three times its 2018 level, yet only 24% of companies that raised a seed round of more than $1 million in 2023 have moved beyond seed. For the 2024 cohort, that figure stands at 16%, versus 55% or more through 2020.

Revenue demands reshape seed funding strategy

Series A investors now typically expect $2 million to $3 million in annual recurring revenue, and in some cases $4 million, while the time between seed and Series A has stretched beyond two years. That is pushing founders to size seed rounds more carefully, particularly if additional capital would not provide enough runway to reach those milestones with a margin of safety.

A larger seed round is not always necessary to clear the next step. Atomic, a New York-based supply chain planning software company founded in 2023, raised a $3 million seed round in April 2025 led by Madrona and DVx Ventures, then closed a $12.5 million Series A about 17 months later, led by Madrona and Klass Capital.

The pattern also highlights the role of midsized venture funds in the next financing stage. Funds with $100 million to $500 million in capital typically lead Series A rounds, making early relationship-building with the right partners increasingly important as startups face a market where product strength alone is often no longer enough without a credible sales engine.

In our earlier article on the U.S. AI data center buildout, we examined how soaring financing costs, construction delays, and power constraints are challenging the pace of planned capacity expansion. We also noted that only a limited share of announced projects appears truly credible, raising concerns that developers may struggle to deliver on timelines and budgets without eroding investor confidence.

This material may contain third-party opinions, none of the data and information on this webpage constitutes investment advice according to our Disclaimer. While we adhere to strict Editorial Integrity, this post may contain references to products from our partners.