# Series A investors in United States (2026 list)

> 2,305 series A investors in United States, 88% active in the last 12 months. Led by Y Combinator, Techstars, 500 Global. Ranked by what they funded.

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

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

# Series A investors in United States

Updated 7 November 2026

Firms we have watched take part in a Series A round raised by a company in United States in the last two years, wherever the firm is based.

[See all 2,305 *→*](https://millionrounds.com/login?join=1&next=%2Fapp%2Finvestor-lists%2Fseries-a-investors-in-united-states)The top 25

**2,305** investors on the list *+2* this week

**23,323** cheques in 12 months *-10%* against the market

**$16M** median round they joined *+101%* against the market median

**88%** wrote a cheque in 12 months

**45%** 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 [Kima Ventures](https://millionrounds.com/fund/kima-ventures) *Deploying now* VC firm · France **859** **$4.2M** median round **Nov 2026** last seen

**2,280 more on this list**

All 2,305 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-a-investors-in-united-states)

## The Newest Cheques

Rounds this list's investors joined most recently

- **7** Nov **[Arka Fincap](https://millionrounds.com/company/arka-fincap)** Other *Led by* [TPG](https://millionrounds.com/fund/tpg)
- **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 **[Fathom Therapeutics](https://millionrounds.com/company/fathom-therapeutics)** Round *With* [Sutter Hill Ventures](https://millionrounds.com/fund/sutter-hill-ventures)
- **6** Nov **[Vensum Power](https://millionrounds.com/company/vensum-power)** Series A · $10M *Led by* [Lifeline Ventures](https://millionrounds.com/fund/lifeline-ventures)
- **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)

## Stages This Year

9,082 rounds

- Seed **22%**
- Venture **20%**
- Series A **16%**
- Pre-seed **8%**
- Series B **7%**
- Other **26%**

## What They Backed

Sectors, last 12 months

- AI **3,292**
- Biotech **719**
- Healthcare **594**
- Fintech **508**
- Big Data & Analytics **447**
- Energy **370**

## Cheques by Quarter

Led Joined

6,572 Q1 25

6,703 Q2 25

7,152 Q3 25

7,667 Q4 25

7,349 Q1 26

6,211 Q2 26

5,190 Q3 26

1,711 Q4 26

The last bar is the quarter still running.

## Lists Like This

- [Early stage investors in United States 3,774](https://millionrounds.com/lists/early-stage-investors-in-united-states)
- [Seed investors in United States 2,252](https://millionrounds.com/lists/seed-investors-in-united-states)
- [Series B investors in United States 1,647](https://millionrounds.com/lists/series-b-investors-in-united-states)
- [Growth investors in United States 1,329](https://millionrounds.com/lists/growth-investors-in-united-states)
- [Early stage investors in United Kingdom 1,166](https://millionrounds.com/lists/early-stage-investors-in-united-kingdom)
- [Series C investors in United States 967](https://millionrounds.com/lists/series-c-investors-in-united-states)
- [Pre-seed investors in United States 774](https://millionrounds.com/lists/pre-seed-investors-in-united-states)
- [Seed investors in United Kingdom 692](https://millionrounds.com/lists/seed-investors-in-united-kingdom)
- [Series A investors in United Kingdom 604](https://millionrounds.com/lists/series-a-investors-in-united-kingdom)

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

## Reading for founders at Series A

- 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 Sales Development Playbook: Build Repeatable Pipeline and Accelerate Growth with Inside Sales Trish Bertuzzi · 2016 4.18 from 696 ratings on Goodreads First sales Hiring and culture About the book Raise your hand if your company needs more new customers. I suspect your hand is (figuratively) up. This book is about not just growth, but high-growth, explosive-growth, the kind of growth that weather satellites can see from space. The success of any business-to-business… 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

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

As an Amazon Associate we earn from qualifying purchases.

## Quick answers about series A investors in United States

### Who are the most active series A investors in United States?

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

### How many series A investors in United States are there?

2,305 are on record. 88% made an investment in the last 12 months and 45% have led a round.

### Which stages do series A investors in United States back?

Of the rounds with a named stage in the last 12 months, mostly Seed (30%) and Series A (23%).

### How big are the rounds series A investors in United States join?

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

### Which sectors do series A investors in United States back most?

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

### Which series A investors in United States lead the most rounds?

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

### Where are series A investors in United States based?

Most of the leading investors here are based in the United States (21 of the top 25); the rest in France and the United Kingdom.

### What have series A investors in United States invested in recently?

Recent rounds include Arka Fincap (Other, Nov 2026, with TPG), LionBio Therapeutics (Pre-seed, Nov 2026, with South Park Commons) and Fathom Therapeutics (Nov 2026, with Sutter Hill Ventures).

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