Index Ventures

Activity from announced rounds

Activity in this selectionOct 24, 2026 · Developer tools · Jan 1, 2026

Index Ventures invests across technology sectors from seed through venture and growth, with teams in San Francisco, New York and London.

The firm publishes practical research for founders through Index Press. Its resources address three distinct scaling decisions: structuring employee stock options, building an organisation as headcount expands and entering the US market.

OptionPlan, TeamPlan and ExpansionPlan accompany the research with planning tools. These resources are particularly useful when fundraising is tied to hiring, opening a US operation or redesigning compensation as a company moves beyond its founding team.

Sources
Rounds participated in
7
Confirmed lead rounds
—
7 roles undisclosed
New companies
7
First participation on record · 0 follow-on
Funding in participating rounds
$2.6B
7 disclosed · full round size, not this investor’s share

By stage

Series B3
Series C+3
Undisclosed1

By primary sector

AI4
Cybersecurity1
Developer tools1
Space tech1

By country

United States5
France1
Ireland1

Rounds

7 in this selection
Cowboy Space Corporation

Develops vertically integrated orbital data centers and launch vehicles for AI compute in space

$275MSeries B
Role not disclosed
Evervault

Encrypts and orchestrates sensitive data for developers

$25MSeries B
Role not disclosed
Temporal

Temporal provides an open-source durable execution platform for long-running applications and AI agents.

$300MSeries D
Role not disclosed
Mistral AI

Mistral AI develops AI models and computing infrastructure for enterprise and public-sector use.

€1.2BStrategic
Role not disclosed
LiveKit

Developer of infrastructure software for real-time AI voice and video applications

$100MSeries C
Role not disclosed
ClickHouse

Provides real-time analytics, data warehousing, observability, and AI/ML infrastructure

$400MSeries D
Role not disclosed