Venture Concentration Peaked in Q1 2026. The Squeeze Moved to Seed.

A record 27 startups raised rounds of $1 billion or more in the third quarter, which sounds like venture money piling ever higher into a few names. Look across all three quarters of 2026, though, and the picture changes: concentration at the very top peaked early in the year. What is tightening now is further down the stack, at the seed stage. Crunchbase News 

Q1 was the extreme. Crunchbase reported roughly $300 billion of global funding, with about 80% going to AI companies, and four of the five largest venture rounds ever recorded closed in the quarter, including OpenAI's $122 billion at an $852 billion valuation. Funding then fell to $212 billion in Q2 and $159 billion in Q3. The Q3 figure is still up 53% from a year earlier, and the first nine months total $679 billion, the strongest such period on record.

So the headline "record mega-rounds" and the trend "less concentrated" are both true. More companies are joining the $1 billion club while the biggest deals of Q1 have not repeated.

The visible part of the squeeze is at seed. Crunchbase puts Q3 seed funding at $13 billion, of which $2.6 billion, about a fifth, went to seed rounds of $100 million or more. In Q1, seed dollars rose about 30% to $12 billion while the number of seed deals fell 31% to 3,700. Earlier this year, Crunchbase calculated that more than 40% of seed and Series A dollars had gone to rounds of $100 million or more, with examples such as Ricursive Intelligence's $300 million Series A at a $4 billion valuation and Merge Labs' reported $252 million seed.

The base of the pyramid is eroding. Crunchbase found that seed rounds of $200,000 to $5 million fell from 70% of all seed dollars in 2018 to 26% in 2025. Of companies that raised a seed round of $1 million or more in 2023, only 27% have progressed to a later round or exited. Seed investors interviewed by Crunchbase expect higher mortality between seed and Series A.

Provisional data adds a caution: Crunchbase warns that early-stage totals are revised upward for weeks as late-reported deals arrive, so Q3 seed figures may rise. Crunchbase News

The fourth quarter has already opened with large rounds. TypeSafe AI raised an $870 million Series A at a $7.5 billion valuation on 9 October. Etched is reportedly fielding offers of $40 billion to $50 billion, and DeepSeek is reported to be closing a round of roughly $12 billion at a valuation of at least $75 billion. None of these is a closed Q4 total, and Crunchbase will not publish its Q4 numbers until January. Bloomberg Law 

If those deals close, Q4 could bring AI's share back up and reverse the easing since Q1. If they don't, Q1 will look like the peak. Either way, the distribution matters more than the headline: a quarter can set a record for $1 billion rounds while the typical seed-stage founder faces fewer, larger and more competitive deals. Which of those two venture markets the data describes will depend on whether the next report is read by its biggest check or by its median one.