# Series B saaS investors (2026 list)

> 91 series B saaS investors, 88% active in the last 12 months. Led by Y Combinator, Sequoia Capital, Accel. Ranked by what they funded.

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

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

# Series B saaS investors

Updated 7 November 2026

Firms we have watched take part in a Series B round raised by a saaS company in the last two years. Both the stage and the sector are what they did, not what their website says.

[See all 91 *→*](https://millionrounds.com/login?join=1&next=%2Fapp%2Finvestor-lists%2Fseries-b-saas-investors)The top 25

**91** investors on the list No change this week

**3,969** cheques in 12 months *-3%* against the market

**$20M** median round they joined *+150%* against the market median

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

**70%** 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 [Sequoia Capital](https://millionrounds.com/fund/sequoia-capital) *Deploying now* VC firm · United States **2,099** **$35M** median round **Nov 2026** last seen
- 3 [Accel](https://millionrounds.com/fund/accel) *Deploying now* VC firm · United States **1,341** **$32M** median round **Nov 2026** last seen
- 4 [Khosla Ventures](https://millionrounds.com/fund/khosla-ventures) *Deploying now* VC firm · United States **1,128** **$26M** median round **Nov 2026** last seen
- 5 [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
- 6 [Gaingels](https://millionrounds.com/fund/gaingels) *Deploying now* Private equity · United States **1,010** **$8M** median round **Oct 2026** last seen
- 7 [BoxGroup](https://millionrounds.com/fund/boxgroup) *Deploying now* VC firm · United States **773** **$18M** median round **Nov 2026** last seen
- 8 [Tiger Global Management](https://millionrounds.com/fund/tiger-global-management) *Deploying now* VC firm · United States **773** **$47M** median round **Nov 2026** last seen
- 9 [Salesforce Ventures](https://millionrounds.com/fund/salesforce-ventures) *Deploying now* Corporate VC · United States **649** **$26M** median round **Nov 2026** last seen
- 10 [CRV](https://millionrounds.com/fund/crv) *Deploying now* VC firm · United States **588** **$20M** median round **Oct 2026** last seen
- 11 [SVB Capital](https://millionrounds.com/fund/svb-capital) *Deploying now* VC firm · United States **564** **$20M** median round **Oct 2026** last seen
- 12 [Bain Capital Ventures](https://millionrounds.com/fund/bain-capital-ventures) *Deploying now* VC firm · United States **524** **$27M** median round **Nov 2026** last seen
- 13 [Seedcamp](https://millionrounds.com/fund/seedcamp) *Deploying now* VC firm · United Kingdom **519** **$5M** median round **Nov 2026** last seen
- 14 [8VC](https://millionrounds.com/fund/8vc) *Deploying now* VC firm · United States **497** **$23M** median round **Oct 2026** last seen
- 15 [Mitsubishi UFJ Capital](https://millionrounds.com/fund/mitsubishi-ufj-capital-co-ltd) *Deploying now* VC firm · Japan **493** **$4.7M** median round **Nov 2026** last seen
- 16 [Spark Capital](https://millionrounds.com/fund/spark-capital) *Deploying now* VC firm · United States **471** **$40M** median round **Oct 2026** last seen
- 17 [Partech Ventures](https://millionrounds.com/fund/partech) *Deploying now* VC firm · France **444** **$15M** median round **Oct 2026** last seen
- 18 [Kleiner Perkins](https://millionrounds.com/fund/kleiner-perkins) *Deploying now* VC firm · United States **398** **$40M** median round **Nov 2026** last seen
- 19 [Mizuho Capital](https://millionrounds.com/fund/mizuho-capital) *Deploying now* VC firm · Japan **397** **$6.5M** median round **Nov 2026** last seen
- 20 [Endeavor Catalyst](https://millionrounds.com/fund/endeavor-catalyst) *Deploying now* Corporate VC · United States **318** **$30M** median round **Oct 2026** last seen
- 21 [Peak XV](https://millionrounds.com/fund/peak-xv) *Deploying now* VC firm · United States **317** **$15M** median round **Nov 2026** last seen
- 22 [Headline](https://millionrounds.com/fund/headline) *Deploying now* VC firm · United States **307** **$15M** median round **Oct 2026** last seen
- 23 [M12](https://millionrounds.com/fund/m12) *Deploying now* Corporate VC · United States **300** **$30M** median round **Oct 2026** last seen
- 24 [Wellington Management](https://millionrounds.com/fund/wellington-management) *Deploying now* VC firm · United States **297** **$130M** median round **Oct 2026** last seen
- 25 [Abstract Ventures](https://millionrounds.com/fund/abstract) *Deploying now* VC firm · United States **295** **$13M** median round **Nov 2026** last seen

**66 more on this list**

All 91 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-saas-investors)

## The Newest Cheques

Rounds this list's investors joined most recently

- **6** Nov **[Thinking Machines Lab](https://millionrounds.com/company/thinking-machines-lab)** Other · $5B *Led by* [Accel](https://millionrounds.com/fund/accel)
- **6** Nov **[Harbinger](https://millionrounds.com/company/harbinger)** Series D+ · $240M *Led by* [Tiger Global Management](https://millionrounds.com/fund/tiger-global-management)
- **5** Nov **[Saidot](https://millionrounds.com/company/saidot)** Round *With* [Crowberry Capital](https://millionrounds.com/fund/crowberry-capital)
- **5** Nov **[Granit](https://millionrounds.com/company/granit)** Seed · $6M *Led by* [Seedcamp](https://millionrounds.com/fund/seedcamp)
- **5** Nov **[Kabilio](https://millionrounds.com/company/kabilio)** $11M *Led by* [Picus Capital](https://millionrounds.com/fund/picus-capital)
- **5** Nov **[Nealle](https://millionrounds.com/company/nealle)** Series C *With* [Keyrock Capital Management Limited](https://millionrounds.com/fund/keyrock-capital-management-limited)

## Stages This Year

3,041 rounds

- Venture **20%**
- Seed **17%**
- Series A **17%**
- Pre-seed **11%**
- Series B **9%**
- Other **25%**

## What They Backed

Sectors, last 12 months

- AI **1,459**
- Fintech **234**
- Big Data & Analytics **167**
- Healthcare **161**
- Financial Services **140**
- Biotech **127**

## Cheques by Quarter

Led Joined

1,012 Q1 25

1,036 Q2 25

1,181 Q3 25

1,191 Q4 25

1,196 Q1 26

1,134 Q2 26

904 Q3 26

248 Q4 26

The last bar is the quarter still running.

## Lists Like This

- [Seed AI investors 2,922](https://millionrounds.com/lists/seed-ai-investors)
- [Series A AI investors 2,490](https://millionrounds.com/lists/series-a-ai-investors)
- [Series B AI investors 1,557](https://millionrounds.com/lists/series-b-ai-investors)
- [Pre-seed AI investors 1,286](https://millionrounds.com/lists/pre-seed-ai-investors)
- [Growth AI investors 1,186](https://millionrounds.com/lists/growth-ai-investors)
- [Series A fintech investors 950](https://millionrounds.com/lists/series-a-fintech-investors)
- [Series C AI investors 930](https://millionrounds.com/lists/series-c-ai-investors)
- [Seed fintech investors 925](https://millionrounds.com/lists/seed-fintech-investors)
- [Series A biotech investors 650](https://millionrounds.com/lists/series-a-biotech-investors)

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

## Reading for founders in b2b software and saas

- Lean B2B: Build Products Businesses Want Étienne Garbugli · 2014 4.16 from 249 ratings on Goodreads B2B software and SaaS About the book www.leanb2bbook.com « This is a must read for every B2B entrepreneur, SaaS creator or consultant and business school student. It's the kind of book you don't read once, you go back to it on a regular basis. » - Carmen Gerea, CEO & Co-founder, UsabilityChefs Lean B2B helps… On AmazonListen on Audible
- The Pricing Roadmap: How to Design B2B SaaS Pricing Models That Your Customers Will Love Ulrik Lehrskov-Schmidt · 2023 4.43 from 207 ratings on Goodreads B2B software and SaaS About the book "The definitive resource on SaaS pricing, I absolutely can not recommend this book enough." Viktor Heide, COO of Contractbook.com, Forbes "30 under 30" A foolproof method to achieve skyrocketing sales, growth, and profits for your software as a service (SaaS) product starts… On AmazonListen on Audible
- Integrity: The Courage to Meet the Demands of Reality Henry Cloud · 2006 4.22 from 3,393 ratings on Goodreads B2B software and SaaS About the book Integrity. It is more than simple honesty. It's the key to success. A person with integrity has the -- often rare -- ability to pull everything together, to make it all happen no matter how challenging the circumstances. Drawing on experiences from his work with Fortune 500… On AmazonListen on Audible
- Blueprints for a SaaS Sales Organization by Jacco vanderKooij Jacco van der Kooij · 2015 4.33 from 324 ratings on Goodreads B2B software and SaaS About the book Because of their very nature, SaaS companies live and die on revenue growth. And once the service is ready there is a very small window in which to scale. Missing that window is the difference between massive success and mediocrity. With such high stakes, it is crucial to get a… On AmazonListen on Audible

More books for founders and investors on the [Reading List](https://millionrounds.com/reading-list?role=founder&model=b2b_software&stage=scaling).

As an Amazon Associate we earn from qualifying purchases.

## Quick answers about series B saaS investors

### Who are the most active series B saaS investors?

By cheques observed, the most active are Y Combinator, Sequoia Capital, Accel, Khosla Ventures and Bessemer Venture Partners.

### How many series B saaS investors are there?

91 are on record. 88% made an investment in the last 12 months and 70% have led a round.

### Which stages do series B saaS investors back?

Of the rounds with a named stage in the last 12 months, mostly Seed (24%) and Series A (24%).

### How big are the rounds series B saaS investors join?

The typical (median) round among the leading investors here is $23M.

### Which sectors do series B saaS investors back most?

In the last 12 months, mostly AI, Fintech and Big Data & Analytics.

### Which series B saaS investors lead the most rounds?

Accel (103 led), Sequoia Capital (91 led) and Khosla Ventures (57 led).

### Where are series B saaS investors based?

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

### What have series B saaS investors invested in recently?

Recent rounds include Thinking Machines Lab (Other, Nov 2026, with Accel), Harbinger (Series D+, Nov 2026, with Tiger Global Management) and Saidot (Nov 2026, with Crowberry Capital).

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