Recently Funded Series B Startups in the United States
Updated Oct 2026
FundedIQ tracks 2,434 funded Series B startups in the United States (US), with their funding rounds, amounts, investors, industries, locations and company details. This page provides an overview of the Series B startup funding landscape in the United States, along with the 100 most recently funded Series B startups in the United States.
The median disclosed round is $40M, with the middle half of rounds falling between $25M and $75M. Artificial Intelligence, Biotechnology and Financial Services hold the most companies by sector. San Francisco and New York hold the deepest concentrations of these companies. Series B startups in the United States closed 791 funding rounds over the last 24 months, 426 of them in the last 12 months, and raised $50B in disclosed capital.
Artificial Intelligence dominates the composition, followed by Biotechnology and Financial Services. These sectors anchor the segment, while Health Care and Information Technology add breadth. Concentration in San Francisco and New York implies a regional bias. Since headcount bands vary, filtering by sub-sector prevents missing lean teams in high-capital fields like Biotech.
Series B funded startup statistics in the United States
Most recent funding round on record: Oct 2026. Investors appearing most often across the United States funding rounds: Alumni Ventures, Andreessen Horowitz, Insight Partners, Sequoia Capital, BoxGroup.
100 most recently funded Series B startups in the United States
100 of 2,434Ordered by the date of the latest funding round. Each row gives the company, its location and industry, what it does, the stage and date of that round, and the disclosed amount.
2,334 more funded startups
This page shows the 100 most recent rounds (back to Jul 2026). The full 2,434-company history for this listing opens on a FundedIQ plan.
Unlock all 2,434 companies in this listing: full funding history, investors, and founders.
Series B startup funding trends in the United States
Funding activity
Series B startups in the United States closed 791 funding rounds over the last 24 months, 426 of them in the last 12, adding up to $50B in disclosed capital.
Round sizes
The median disclosed round is $40M, with the middle half running from $25M to $75M. 730 of 791 rounds disclosed an amount.
Sectors
Artificial Intelligence, Biotechnology and Financial Services hold the most companies, led by Artificial Intelligence at 466. The most common headcount band across the segment is 11-50.
Investors
Alumni Ventures, Andreessen Horowitz and Insight Partners appear most often across funded Series B startups in the United States on record.
Industries with the most funded Series B startups in the United States
Sector counts across all 2,434 tracked companies in the United States. A company assigned more than one industry is counted in each.
Where are funded Series B startups located in the United States?
Where funded Series B startups in the United States are based, by the city on the company record.
Funded Series B startups in the United States by state
The states with the most funded startups on record.
Top investors in Series B startups in the United States
The investors named most often across funded Series B startups in the United States.
Counts companies in this segment that name the firm as a backer. Investor names entered the pipeline in July 2026, so they cover the companies funded since.
About the FundedIQ Series B startup funding data in the United States
FundedIQ tracks announced startup funding rounds and organises them by company, funding date, stage, amount, industry, location and investor. The dataset is refreshed weekly, and new rounds are normalised and de-duplicated before they are published, so the same round reported twice on different dates is recorded once.
Figures on this page cover the 2,434 funded Series B startups in the United States currently tracked. Round counts, capital totals and the median round are computed over a trailing 24 months. Rounds whose amount was not disclosed (61 of 791 in that period) are counted as rounds but excluded from capital totals and from the median. The most recent round on record for funded Series B startups in the United States is dated Oct 2026.
The table above shows the 100 most recently funded companies. Full funding histories, investor lists and founder contacts across the whole dataset open on a FundedIQ plan.
Frequently asked questions
How many funded Series B startups are there in the United States?
FundedIQ tracks 2,434 funded Series B startups in the United States. This page lists the 100 most recently funded of them, ordered by the date of their latest round, and the full set is available on a FundedIQ plan.
How much funding have Series B startups in the United States raised?
Series B startups in the United States tracked by FundedIQ have raised $50B in disclosed capital across 791 funding rounds over the last 24 months, including 426 rounds in the last 12 months. 730 of those 791 rounds disclosed an amount; undisclosed rounds are excluded from the capital total.
What industries have the most funded Series B startups in the United States?
Artificial Intelligence has the most, with 466 companies, followed by Biotechnology (320), Financial Services (206) and Health Care (187). Sector counts include every company assigned that industry, and a company can carry more than one.
Which cities have the most funded Series B startups in the United States?
San Francisco leads with 421 companies, then New York (348), Boston (89) and Cambridge (78).
Which investors back the most Series B startups in the United States?
Alumni Ventures, Andreessen Horowitz, Insight Partners, Sequoia Capital and BoxGroup appear most often across funded Series B startups in the United States in the FundedIQ dataset. The count is the number of tracked companies naming each firm as a backer, so it reflects the companies on record rather than every deal a firm has ever done.
What is a typical funding round size for Series B startups in the United States?
The median disclosed round over the last 24 months is $40M, and the middle half of rounds fall between $25M and $75M. Round sizes vary widely by stage, so the seed and later-stage bands sit well either side of that figure.
How often is the Series B startup funding data in the United States updated?
The dataset is refreshed weekly. New rounds are normalised and de-duplicated before they are published, and the most recent round currently on record for funded Series B startups in the United States is dated Oct 2026. Counts and totals on this page are recomputed on every refresh.
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