Only two US startups raised $200 million or more during October 10-16, even as major investments in AI infrastructure, construction technology and biotechnology kept venture capital activity moving.
The biggest venture capital deals in the United States became less frequent during the week of October 10-16, but investors were still willing to commit substantial sums to companies operating in high-demand technology sectors.
New York-based AI infrastructure company Modal Labs dominated the week’s funding activity, raising $750 million in a Series D round that valued the business at $15.75 billion. The investment was comfortably ahead of other announced transactions, with construction technology company Icon taking second place after securing $200 million.
The gap between the two deals was striking. Only two funding rounds reached the $200 million mark during the period, according to Crunchbase’s ranking of announced investments in US-based startups.
Modal Labs Leads Weekly US Startup Funding With $750 Million Series D
Modal Labs emerged as the clear leader in the latest US startup funding rankings after completing a $750 million Series D round led by Accel.
The financing placed the company’s valuation at $15.75 billion, making it the largest announced US startup investment tracked by Crunchbase for the week.
The funding comes alongside a significant revenue milestone. Modal Labs said its annual revenue run rate had recently surpassed $1 billion, an indication of the scale at which its AI infrastructure business is operating.
That figure is a measure of revenue at an annualised pace rather than confirmed revenue collected over a completed financial year.
Nevertheless, it provides important context for a financing round of this size.
Modal Labs’ position at the top of the weekly rankings also reflects the considerable sums investors are prepared to commit to businesses supporting AI infrastructure, even during a quieter period for exceptionally large venture deals.
Icon Secures $200 Million as Construction Automation Attracts Investors
While artificial intelligence produced the largest deal, construction technology accounted for the second-biggest investment.
Austin-based Icon, known for its work in 3D-printed homes, raised $200 million in a Series D financing round led by Baillie Gifford and BlackRock.
The company said it was on track to achieve fourfold revenue growth in 2026, providing a business backdrop to the new investment.
Icon’s funding demonstrates that substantial venture capital commitments are extending beyond conventional software and AI businesses. Its work in automated construction places it in a different segment of the technology market, where physical infrastructure and industrial processes are central to the business.
Biotechnology Startups Secure More Than $200 Million Across Two Deals
Biotechnology also featured among the week’s largest fundraising announcements, with Soufflé Therapeutics and Estuary Biotherapeutics attracting significant capital.
Soufflé Therapeutics secured $135 million through a Series B round led by Juvia Group.
Estuary Biotherapeutics, meanwhile, launched with $103 million in financing. That amount included a $93 million Series A led by RA Capital Management and $10 million in previously undisclosed seed funding.
The distinction matters because Estuary’s announced financing was not entirely new Series A capital. The $103 million figure includes both its latest investment round and earlier seed backing.
Together, the two biotechnology companies accounted for $238 million in disclosed financing, keeping the sector among the prominent recipients of venture funding during the period.
AI Software Investment Continues Beyond Modal Labs
The week’s activity in artificial intelligence was not limited to infrastructure.
Labelbox secured $100 million in Series E funding led by Infinitum Partners, while Suki announced a $90 million Series E involving investors including Healthier Capital and Crosslink Capital.
North.cloud also joined the funding rankings with a $60 million Series B led by PeakSpan Capital.
These investments point to continued venture capital interest across different parts of the AI-related business landscape. Modal Labs accounted for the largest individual transaction, but other software-focused companies were also able to attract sizable financing rounds.
Healthcare, Insurance and Semiconductor Firms Join Funding Rankings
Several businesses outside the week’s largest AI and biotechnology deals also secured substantial backing.
Abby Care raised $82 million in a Series C round led by Transformation Capital, reflecting investor interest in home care services.
Insurance startup Stand completed a $70 million Series C led by Saga Ventures, with the financing valuing the company at $1 billion.
In semiconductor infrastructure, Mueon raised $65 million through a Series A led by Maverick Silicon. The company is developing a modular platform aimed at AI and hyperscale computing.
The inclusion of these businesses adds breadth to the week’s funding picture. Capital reached companies involved in healthcare delivery, insurance and computing infrastructure, alongside the better-funded AI and biotechnology sectors.
What the Latest US Startup Funding Numbers Reveal
The October 10-16 funding rankings illustrate a market in which exceptionally large deals were limited, rather than one in which major investment activity had disappeared.
Modal Labs alone raised more than three times the amount secured by Icon, the second-largest recipient. That concentration is particularly notable because the week’s remaining announced deals were all below $200 million.
At the same time, the distribution of investments across multiple industries suggests that venture capital activity was not confined to a single technology category.
The week’s funding activity offers a snapshot of where large US venture investments were concentrated, rather than a definitive measure of the market’s longer-term direction.
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