# Series B martech investors (2026 list)

> 67 series B martech investors, 97% active in the last 12 months. Led by Y Combinator, Sequoia Capital, Andreessen Horowitz. Ranked by what they funded.

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

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

# Series B martech investors

Updated 7 November 2026

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

[See all 67 *→*](https://millionrounds.com/login?join=1&next=%2Fapp%2Finvestor-lists%2Fseries-b-martech-investors)The top 25

**67** investors on the list *-3* this week

**2,952** cheques in 12 months *-8%* against the market

**$14M** median round they joined *+75%* against the market median

**97%** wrote a cheque in 12 months

**67%** 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 [Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz) *Deploying now* VC firm · United States **1,661** **$27M** median round **Nov 2026** last seen
- 4 [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
- 5 [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
- 6 [Redpoint](https://millionrounds.com/fund/redpoint) *Deploying now* VC firm · United States **742** **$32M** median round **Nov 2026** last seen
- 7 [Salesforce Ventures](https://millionrounds.com/fund/salesforce-ventures) *Deploying now* Corporate VC · United States **649** **$26M** median round **Nov 2026** last seen
- 8 [Flybridge](https://millionrounds.com/fund/flybridge) *Deploying now* VC firm · United States **534** **$5M** median round **Sept 2026** last seen
- 9 [Seedcamp](https://millionrounds.com/fund/seedcamp) *Deploying now* VC firm · United Kingdom **519** **$5M** median round **Nov 2026** last seen
- 10 [Spark Capital](https://millionrounds.com/fund/spark-capital) *Deploying now* VC firm · United States **471** **$40M** median round **Oct 2026** last seen
- 11 [Coinbase Ventures](https://millionrounds.com/fund/coinbase) *Deploying now* Corporate VC · United States **465** **$9.8M** median round **Nov 2026** last seen
- 12 [Union Square Ventures](https://millionrounds.com/fund/union-square-ventures) *Deploying now* VC firm · United States **407** **$17M** median round **Nov 2026** last seen
- 13 [Shasta Ventures](https://millionrounds.com/fund/shasta-ventures) *Deploying now* VC firm · United States **353** **$15M** median round **Aug 2026** last seen
- 14 [SBI Investment](https://millionrounds.com/fund/sbi-investment) *Deploying now* VC firm · Japan **330** **$8.7M** median round **Sept 2026** last seen
- 15 [QED Investors](https://millionrounds.com/fund/qed-investors) *Deploying now* VC firm · United States **314** **$29M** median round **Oct 2026** last seen
- 16 [Korea Investment Partners](https://millionrounds.com/fund/korea-investment-partners) *Deploying now* VC firm · South Korea **298** **$8M** median round **Nov 2026** last seen
- 17 [Angel Invest](https://millionrounds.com/fund/angel-invest) *Deploying now* VC firm · Germany **282** **$1.5M** median round **Nov 2026** last seen
- 18 [Vertex Ventures](https://millionrounds.com/fund/vertex-ventures) *Deploying now* VC firm · Mexico **267** **$15M** median round **Sept 2026** last seen
- 19 [Northzone](https://millionrounds.com/fund/northzone) *Deploying now* VC firm · United Kingdom **240** **$22M** median round **Oct 2026** last seen
- 20 [Forerunner Ventures](https://millionrounds.com/fund/forerunner-ventures) *Deploying now* VC firm · United States **225** **$20M** median round **Oct 2026** last seen
- 21 [Western Technology Investment](https://millionrounds.com/fund/wti) *Deploying now* VC firm · United States **222** **$11M** median round **Sept 2026** last seen
- 22 [Reach](https://millionrounds.com/fund/reach) *Deploying now* VC firm · Canada **217** **$5M** median round **Sept 2026** last seen
- 23 [Bloomberg Beta](https://millionrounds.com/fund/bloomberg-beta) *Deploying now* VC firm · United States **206** **$8M** median round **Sept 2026** last seen
- 24 [Icehouse Ventures](https://millionrounds.com/fund/icehouse-ventures) *Deploying now* VC firm · New Zealand **179** **$2.4M** median round **Oct 2026** last seen
- 25 [Blackbird Ventures](https://millionrounds.com/fund/blackbird-ventures-2) *Deploying now* VC firm · United States **177** **$7M** median round **Oct 2026** last seen

**42 more on this list**

All 67 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-martech-investors)

## The Newest Cheques

Rounds this list's investors joined most recently

- **5** Nov **[Saidot](https://millionrounds.com/company/saidot)** Round *With* [Crowberry Capital](https://millionrounds.com/fund/crowberry-capital)
- **5** Nov **[Soter Insure](https://millionrounds.com/company/soter-insure)** Series B *With* [Coinbase Ventures](https://millionrounds.com/fund/coinbase)
- **5** Nov **[firmly](https://millionrounds.com/company/firmly)** Series A · $15M *With* [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund)
- **5** Nov **[Granit](https://millionrounds.com/company/granit)** Seed · $6M *Led by* [Seedcamp](https://millionrounds.com/fund/seedcamp)
- **5** Nov **[RadianX](https://millionrounds.com/company/radianx)** Seed · $9M *With* [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund)
- **5** Nov **[Zipline](https://millionrounds.com/company/zipline)** Growth · $1.5B *With* [Salesforce Ventures](https://millionrounds.com/fund/salesforce-ventures)

## Stages This Year

2,517 rounds

- Venture **22%**
- Seed **18%**
- Series A **16%**
- Pre-seed **13%**
- Series B **9%**
- Other **23%**

## What They Backed

Sectors, last 12 months

- AI **1,255**
- Fintech **186**
- Big Data & Analytics **167**
- Healthcare **112**
- Financial Services **105**
- Biotech **99**

## Cheques by Quarter

Led Joined

819 Q1 25

798 Q2 25

941 Q3 25

950 Q4 25

931 Q1 26

802 Q2 26

654 Q3 26

168 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 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 martech investors

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

By cheques observed, the most active are Y Combinator, Sequoia Capital, Andreessen Horowitz, New Enterprise Associates and Alumni Ventures.

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

67 are on record. 97% made an investment in the last 12 months and 67% have led a round.

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

Of the rounds with a named stage in the last 12 months, mostly Seed (24%) and Series A (23%).

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

The typical (median) round among the leading investors here is $12M.

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

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

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

Andreessen Horowitz (114 led), Sequoia Capital (91 led) and New Enterprise Associates (73 led).

### Where are series B martech investors based?

Among the most active, most are based in the United States (17), the United Kingdom (2) and Japan (1).

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

Recent rounds include Saidot (Nov 2026, with Crowberry Capital), Soter Insure (Series B, Nov 2026, with Coinbase Ventures) and firmly (Series A, Nov 2026, with Alumni Ventures).

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