Series B startup

Who invested in Silicon Optix

2 rounds we have observed, with the 7 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.

Funding summaryUpdated 26 Oct 2026

$45Mraised across 2 rounds since 2003, from 2 sources

$27MSeries B$18MSeries B
Latest round
Series B, $18MJan 2004
Biggest round
$27MSeries B · Mar 2003
Investors
7
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.

2004
$27MSeries B$18MSeries B
First round
Series B, $27M
Mar 2003
Biggest round
$27M
Series B · Mar 2003
Between rounds
10 months
from the last two

The rounds

  1. Jan 2004
  2. Mar 2003
    Series B$27M4 new

    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.

The exit

ExitBuyerPriceWhen
AcquiredIDTundisclosedOct 2008

From historical deal records. Wrong? Tell us.

Everyone who backed them

CanaanVC firm2rounds
Polaris PartnersVC firm2rounds
Origin PartnersGrowth equity2rounds
Focus VenturesGrowth equity1round
Firsthand CapitalGovernment1round

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

Quick answers about Silicon Optix

Who invested in Silicon Optix?

Silicon Optix's investors include Canaan, Polaris Partners, Origin Partners, RBC Venture Partners and Focus Ventures, and 2 more on record.

How much has Silicon Optix raised?

Silicon Optix has raised $45M across 2 rounds since 2003.

When did Silicon Optix last raise?

Silicon Optix's most recent round was a Series B of $18M in Jan 2004.

What was Silicon Optix's biggest round?

Silicon Optix's largest round on record is $27M (Series B), in Mar 2003.

Who backed Silicon Optix first?

Silicon Optix's first round on record, in Mar 2003, was backed by Canaan, Polaris Partners and RBC Venture Partners and 1 others.

What stage is Silicon Optix at?

Silicon Optix's latest named round is a Series B, in Jan 2004.

Find investors like these

Search every investor by what they have actually funded, then narrow to your stage and market. Free.