# Series B investors in North America (2026 list)

> 1,704 series B investors in North America, 92% active in the last 12 months. Led by Y Combinator, Techstars, 500 Global. Ranked by what they funded.

Source: https://millionrounds.com/lists/series-b-investors-in-north-america (Millionrounds; every figure on the page links to its filing or article)

[Investor Lists](https://millionrounds.com/lists)

# Series B investors in North America

Updated 7 November 2026

Firms we have watched take part in a Series B round raised by a company in North America in the last two years, wherever the firm is based.

[See all 1,704 *→*](https://millionrounds.com/login?join=1&next=%2Fapp%2Finvestor-lists%2Fseries-b-investors-in-north-america)The top 25

**1,704** investors on the list *+14* this week

**21,450** cheques in 12 months *-8%* against the market

**$26M** median round they joined *+225%* against the market median

**92%** wrote a cheque in 12 months

**53%** have led a round

## The Top 25

Ordered by cheques observed, never by anything anyone paid for

Deploying now (25)

- 1 [Y Combinator](https://millionrounds.com/fund/y-combinator) *Deploying now* Accelerator · United States **6,412** **$3M** median round **Oct 2026** last seen
- 2 [Techstars](https://millionrounds.com/fund/techstars) *Deploying now* VC firm · United States **2,989** **$1.2M** median round **Nov 2026** last seen
- 3 [500 Global](https://millionrounds.com/fund/500-startups) *Deploying now* Angel · United States **2,140** **$3.6M** median round **Oct 2026** last seen
- 4 [Sequoia Capital](https://millionrounds.com/fund/sequoia-capital) *Deploying now* VC firm · United States **2,099** **$35M** median round **Nov 2026** last seen
- 5 [National Science Foundation](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) *Deploying now* Government · United States **1,869** **$926K** median round **Sept 2026** last seen
- 6 [Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz) *Deploying now* VC firm · United States **1,661** **$27M** median round **Nov 2026** last seen
- 7 [New Enterprise Associates](https://millionrounds.com/fund/new-enterprise-associates) *Deploying now* VC firm · United States **1,610** **$34M** median round **Oct 2026** last seen
- 8 [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) *Deploying now* VC firm · United States **1,598** **$12M** median round **Nov 2026** last seen
- 9 [Plug and Play](https://millionrounds.com/fund/plug-and-play) *Deploying now* Accelerator · United States **1,561** **$5M** median round **Nov 2026** last seen
- 10 [General Catalyst](https://millionrounds.com/fund/general-catalyst) *Deploying now* VC firm · United States **1,387** **$27M** median round **Nov 2026** last seen
- 11 [SV Angel](https://millionrounds.com/fund/sv-angel) *Deploying now* VC firm · United States **1,349** **$18M** median round **Oct 2026** last seen
- 12 [Accel](https://millionrounds.com/fund/accel) *Deploying now* VC firm · United States **1,341** **$32M** median round **Nov 2026** last seen
- 13 [Lightspeed Venture Partners](https://millionrounds.com/fund/lightspeed-venture-partners) *Deploying now* VC firm · United States **1,341** **$35M** median round **Nov 2026** last seen
- 14 [Bpifrance](https://millionrounds.com/fund/bpifrance) *Deploying now* Government · France **1,151** **$4.5M** median round **Oct 2026** last seen
- 15 [Khosla Ventures](https://millionrounds.com/fund/khosla-ventures) *Deploying now* VC firm · United States **1,128** **$26M** median round **Nov 2026** last seen
- 16 [Intel Capital](https://millionrounds.com/fund/intel-capital) *Deploying now* Corporate VC · United States **1,123** **$22M** median round **Oct 2026** last seen
- 17 [Founders Fund](https://millionrounds.com/fund/founders-fund) *Deploying now* VC firm · United States **1,122** **$15M** median round **Oct 2026** last seen
- 18 [Bessemer Venture Partners](https://millionrounds.com/fund/bessemer-venture-partners) *Deploying now* VC firm · United States **1,038** **$30M** median round **Nov 2026** last seen
- 19 [Index Ventures](https://millionrounds.com/fund/index-ventures) *Deploying now* VC firm · United Kingdom **1,027** **$31M** median round **Nov 2026** last seen
- 20 [Gaingels](https://millionrounds.com/fund/gaingels) *Deploying now* Private equity · United States **1,010** **$8M** median round **Oct 2026** last seen
- 21 [MassChallenge](https://millionrounds.com/fund/masschallenge) *Deploying now* Accelerator · United States **984** **$1.8M** median round **Sept 2026** last seen
- 22 [SOSV](https://millionrounds.com/fund/sosv) *Deploying now* VC firm · United States **951** **$2.5M** median round **Nov 2026** last seen
- 23 [Google Ventures](https://millionrounds.com/fund/gv) *Deploying now* Corporate VC · United States **884** **$38M** median round **Oct 2026** last seen
- 24 [EIC Accelerator](https://millionrounds.com/fund/eic-accelerator) *Deploying now* Government · European Union **875** **$4.3M** median round **Oct 2026** last seen
- 25 [FJ Labs](https://millionrounds.com/fund/fj-labs) *Deploying now* VC firm · United States **849** **$11M** median round **Oct 2026** last seen

**1,679 more on this list**

All 1,704 are in the app, with filters for stage, sector and market. A free account shows 10 per search, Pro up to 1,000.

[See the whole list *→*](https://millionrounds.com/login?join=1&next=%2Fapp%2Finvestor-lists%2Fseries-b-investors-in-north-america)

## The Newest Cheques

Rounds this list's investors joined most recently

- **7** Nov **[LionBio Therapeutics](https://millionrounds.com/company/lionbio-therapeutics)** Pre-seed · $6M *With* [South Park Commons](https://millionrounds.com/fund/south-park-commons)
- **6** Nov **[Physicl](https://millionrounds.com/company/physicl)** Seed · $10M *Led by* [Inovia Capital](https://millionrounds.com/fund/inovia-capital)
- **6** Nov **[Shield AI](https://millionrounds.com/company/shield-ai)** $2B *Led by* [Disruptive](https://millionrounds.com/fund/disruptive)
- **6** Nov **[Future Secure AI](https://millionrounds.com/company/future-secure-ai)** Other · $80M *Led by* [Square Peg](https://millionrounds.com/fund/square-peg-2)
- **6** Nov **[Humble Robotics](https://millionrounds.com/company/humble-robotics)** Series A · $51M *Led by* [Obvious Ventures](https://millionrounds.com/fund/obvious-ventures)
- **6** Nov **[Ocient](https://millionrounds.com/company/ocient)** Series C · $100M *With* [Greycroft](https://millionrounds.com/fund/greycroft)

## Stages This Year

8,647 rounds

- Seed **20%**
- Venture **20%**
- Series A **16%**
- Series B **8%**
- Pre-seed **8%**
- Other **27%**

## What They Backed

Sectors, last 12 months

- AI **3,203**
- Biotech **706**
- Healthcare **575**
- Fintech **499**
- Big Data & Analytics **422**
- Energy **348**

## Cheques by Quarter

Led Joined

5,904 Q1 25

6,002 Q2 25

6,430 Q3 25

6,994 Q4 25

6,768 Q1 26

5,724 Q2 26

4,792 Q3 26

1,490 Q4 26

The last bar is the quarter still running.

## Lists Like This

- [Series A investors in North America 2,451](https://millionrounds.com/lists/series-a-investors-in-north-america)
- [Seed investors in North America 2,422](https://millionrounds.com/lists/seed-investors-in-north-america)
- [Seed investors in Europe 1,730](https://millionrounds.com/lists/seed-investors-in-europe)
- [Series A investors in Europe 1,419](https://millionrounds.com/lists/series-a-investors-in-europe)
- [Growth investors in North America 1,382](https://millionrounds.com/lists/growth-investors-in-north-america)
- [Series C investors in North America 1,011](https://millionrounds.com/lists/series-c-investors-in-north-america)
- [Pre-seed investors in North America 877](https://millionrounds.com/lists/pre-seed-investors-in-north-america)
- [Series B investors in Europe 871](https://millionrounds.com/lists/series-b-investors-in-europe)
- [Pre-seed investors in Europe 775](https://millionrounds.com/lists/pre-seed-investors-in-europe)

[All investor lists *→*](https://millionrounds.com/lists)

## Reading for founders at Series B and scaling

- Blitzscaling: The Lightning-Fast Path to Building Massively Valuable Companies Reid Hoffman · 2018 3.95 from 7,118 ratings on Goodreads Scaling and operations Leading and managing Moats and competition About the book Foreword by Bill Gates LinkedIn cofounder, legendary investor, and host of the award-winning Masters of Scale podcast reveals the secret to starting and scaling massively valuable companies. What entrepreneur or founder doesn’t aspire to build the next Amazon, Facebook, or… On AmazonListen on Audible
- One Page Talent Management: Eliminating Complexity, Adding Value Marc Effron · 2010 4.00 from 311 ratings on Goodreads Leading and managing Hiring and culture Scaling and operations About the book A Revolutionary Approach to Talent Management You know that winning in today’s marketplace requires top quality talent. You also know what it takes to build that talent, and you spend significant financial and human resources to make it happen. Yet somehow, your company’s… On AmazonListen on Audible
- The Culture Code: The Secrets of Highly Successful Groups Daniel Coyle · 2017 4.24 from 37,412 ratings on Goodreads Hiring and culture Leading and managing About the book What do Pixar, Google and the San Antonio Spurs basketball team have in common?The answer is that they all owe their extraordinary success to their team-building skills. In The Culture Code, Daniel Coyle goes inside some of the most effective organisations in the world and… On AmazonListen on Audible
- Scaling Up: How a Few Companies Make It...and Why the Rest Don't Verne Harnish · 2014 4.16 from 6,229 ratings on Goodreads Scaling and operations Leading and managing About the book Winner of the 2015 International Book Awards for General Business Winner of the 2015 National Indie Excellence Award for General Business Winner of the 2015 Readers' Favorite International Book Award Gold Medal for Non-Fiction Business Winner of the 2015 Paris Book… On AmazonListen on Audible

More books for founders and investors on the [Reading List](https://millionrounds.com/reading-list?role=founder&stage=scaling).

As an Amazon Associate we earn from qualifying purchases.

## Quick answers about series B investors in North America

### Who are the most active series B investors in North America?

By cheques observed, the most active are Y Combinator, Techstars, 500 Global, Sequoia Capital and National Science Foundation.

### How many series B investors in North America are there?

1,704 are on record. 92% made an investment in the last 12 months and 53% have led a round.

### Which stages do series B investors in North America back?

Of the rounds with a named stage in the last 12 months, mostly Seed (29%) and Series A (23%).

### How big are the rounds series B investors in North America join?

The typical (median) round among the leading investors here is $15M.

### Which sectors do series B investors in North America back most?

In the last 12 months, mostly AI, Biotech and Healthcare.

### Which series B investors in North America lead the most rounds?

Andreessen Horowitz (114 led), Accel (103 led) and General Catalyst (97 led).

### Where are series B investors in North America based?

Most of the leading investors here are based in the United States (22 of the top 25); the rest in France and the United Kingdom.

### What have series B investors in North America invested in recently?

Recent rounds include LionBio Therapeutics (Pre-seed, Nov 2026, with South Park Commons), Physicl (Seed, Nov 2026, with Inovia Capital) and Shield AI (Nov 2026, with Disruptive).

Built from the rounds we watched, refreshed every night. [How we count](https://millionrounds.com/methodology) · [Report a correction](https://millionrounds.com/corrections)