Who invested in SimilarWeb

5 rounds we have observed, with the 4 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Big Data & AnalyticsSoftware

Funding summaryUpdated 26 Oct 2026

$105Mraised across 5 rounds since 2009, from 5 sources

$18MSeries C$15MSeries D$25MSeries E$47MRound

Latest round: Round, $47MJul 2017
Step-upi: 1.9×
Investors: 4

See who backed them

The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

20092011201320152017

?Seed$18MSeries C$15MSeries D$25MSeries E$47MRound

First round: Seed
Biggest round: $47M
Usual gap between rounds: 21 months

The rounds

Jul 2017
Round$47M2 new
- CE
- Viola Growth/ Saban
Reported by FinSMEs
Oct 2015
Series E$25M2 returning
- Naspers
- Lord David Alliance
From a historical funding record
Nov 2014
Series D$15M1 new1 returning
- Naspers
- Lord David Alliance
From a historical funding record
Feb 2014
Series C$18M1 new
- Naspers
From a historical funding record
Feb 2009
SeedAmount undisclosed
No investor was named in the report.
From a historical funding record

Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

Seed2009Series C2014Series D2014Series E2015Round2017

NaspersLord David AllianceCEViola Growth/ Saban

Everyone who backed them

NaspersVC firm3rounds

Lord David AllianceAngel2rounds

CEno record of our own yet1round

Viola Growth/ Sabanno record of our own yet1round

Missing a round, or an investor who was in one? Tell us.

Also claim to have backed them

This firm lists SimilarWeb as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.