The news
Series A rounds of $100 million or more are now routine. As of September 23, 2026, Crunchbase News counted at least 114 worldwide this year, worth about $33 billion, and said the year is on track to set a record.
The largest are big by any standard. River AI, a Silicon Valley company Crunchbase describes as a platform for developers to train and serve custom models, raised a $1.2 billion Series A, and China's Xpeng Robotics raised $900 million for humanoid robots. At least 12 Series A rounds this year reached $500 million or more. Chip fabrication startup Fab2 raised a $500 million Series A at a $3.7 billion valuation in early September, according to Crunchbase, and robotics company Rhoda AI came out of stealth in March with a $450 million Series A that Bloomberg said valued it at $1.7 billion. The same month, Mind Robotics raised a $500 million Series A led by Accel and Andreessen Horowitz, according to Crunchbase.
US companies accounted for about 62 of the deals, worth roughly $15 billion, and more than 70% of the jumbo rounds went to AI-focused startups, according to Crunchbase. That mirrors the wider market: Crunchbase estimates that AI startups took about $394 billion, or roughly 77%, of global venture and growth funding in the first half of 2026.
Crunchbase offered three explanations. Exit multiples have rewarded startups with outsized ambitions; leading venture firms have unusually large reserves to deploy; and investors agree more than usual on the sectors, business models and founding teams they want to back.
The broader market shows the same concentration. Across all stages, dollars have surged while deal counts have fallen: in North America, first-quarter funding rose 190% from a year earlier while the number of deals dropped 26%, Crunchbase reported in April.
The numbers
- Series A rounds of $100M+ in 2026
- At least 114 (as of Sept. 23)
- Combined value
- About $33 billion
- Rounds of $500M+
- At least 12
- US share
- About 62 deals, roughly $15 billion
- Share to AI-focused startups
- More than 70%
- Largest Series A
- River AI, $1.2 billion
Why CEOs should care
For founders, a jumbo Series A buys compute, talent and time, which matters in capital-heavy fields such as chips and robotics. It also sets expectations. A $3.7 billion Series A valuation, like Fab2's, is a price the next round must clear. Founders should size raises to specific technical and commercial milestones, weigh terms such as liquidation preferences as carefully as the headline price, and keep enough equity for future hiring.
For corporate buyers, a supplier that raised $500 million may look established, but it remains an early-stage company with limited operating history. Procurement and security teams should apply early-stage diligence regardless of round size: reference customers, source-code escrow for critical software, and termination rights if the vendor is acquired or changes direction.
For investors and the boards of venture firms, jumbo Series A rounds squeeze the traditional early-stage model. When first rounds rival late-stage checks, smaller funds are priced out and ownership targets shrink. Sandhya Venkatachalam, an early Groq backer who runs a $52 million fund at Axiom Partners, told Crunchbase News on September 28 that she expects about half of her roughly 35 planned investments to fail, a reminder that early-stage returns depend on a few outliers.
The bigger picture
Jumbo early rounds are the upstream version of the late-stage concentration seen throughout 2026. Five of the seven companies that raised $1 billion or more in August had raised within the prior 12 months, according to Crunchbase, and investors are backing perceived category leaders at every stage. Big exits reinforce the logic: Crunchbase counts SpaceX's $60 billion purchase of Cursor maker Anysphere as the largest startup acquisition on record.
Seed investors describe a different set of rules. Aaron Golbin of LvlUp Ventures, whose team reviewed close to 25,000 applications last year, wrote in Crunchbase News on September 18 that nearly 82% of startups still operating a year later had a strong go-to-market foundation in their pitch, and that non-dilutive capital increasingly complements equity for revenue-generating startups.
What’s next
Watch whether 2026 finishes above the prior record for $100 million-plus Series A rounds, as Crunchbase expects, and whether this year's cohort hits Series B milestones in 2027. The first flat or down rounds among these companies would signal that early-stage pricing has run ahead of results. Also watch how many of these companies disclose revenue before their next raise.
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