Sequoia Capital — Funding Activity & Portfolio Companies

Activity in this selectionUnited States · Oct 16, 2026 · Jul 19, 2026

Sequoia Capital partners with company founders from early ideas through growth. Explore its recorded funding activity, companies and co-investors on RoundOS.

Investment approach

Sequoia Capital is a venture investment firm that backs founders from the earliest stages of company building and supports them through growth and public-market milestones. Its published approach emphasizes early partnership and long-term work with a focused group of companies.

Funding activity recorded on RoundOS

The history below brings together financing announcements linked to Sequoia Capital, with company, stage and co-investor details. It includes participation in Instinct’s September 2026 financing; Sequoia also lists Instinct among its own portfolio companies. The table reflects the announcements recorded by RoundOS, rather than a complete portfolio register.

Sources

Rounds participated in: 18
Confirmed lead rounds: 3
New companies: 14
Funding in participating rounds: $9B

By stage

Series C+10

Undisclosed3

Series B2

Growth1

Seed1

1 more

Series A1

By primary sector

AI7

Defense tech2

Hardware2

Climate tech1

Cybersecurity1

5 more

Developer tools1

Enterprise software1

Fintech1

Mobility1

Robotics1

By country

United States18

Rounds

18 in this selection

Oct 9

TypeSafe AI

Developer infrastructure that turns unstructured inputs into typed decisions and probability scores for automated software workflows.

$870MSeries A

Participant

Oct 7

Mecka

Data collection, evaluation and integration infrastructure for teams training robots and deploying them in commercial environments.

$60MSeries B

Lead

Oct 1

Augmeta

AI operators monitor business KPIs and take action to protect revenue or find growth opportunities.

$3MSeed

Participant

Sep 28

Instinct

Develops a personal AI assistant that carries out everyday tasks through text and phone calls.

$1BSeries C

Participant

Sep 24

Silk

Cloud data infrastructure for running demanding applications and AI workloads against live production data.

$45MGrowth capital facility

Participant

Sep 16

Factory

Develops an autonomous software-development platform for enterprise engineering teams.

$200MFunding

Role not disclosed

Sep 15

Profound

Profound helps marketing teams measure how brands appear in AI-generated search answers and turn those findings into content and campaign workflows.

$180MSeries D

Lead

Sep 14

Temporal

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

$550MSeries E

Participant

Sep 11

Cymphony

An AI security platform maps workforce and agent access to company data so security teams can govern exposure.

$30MFunding

Lead

Sep 10

Mach Industries

Builds advanced unmanned aerial systems and vertically integrated manufacturing infrastructure for modern defense

$600MSeries C continuation

Role not disclosed

Sep 10

Clay

A go-to-market platform that combines customer and prospect data with AI research and automation tools for revenue teams.

$115MSeries D

Participant

Sep 9

The Boring Company

The Boring Company builds tunnel-boring machines and underground Loop passenger systems for cities and transport partners.

$3BSeries D

Participant

Sep 3

empirik.ai

empirik gives engineering teams an AI agent and live graph of their cloud, on-premises and SaaS estate to assess infrastructure changes before execution. It connects a proposed change to affected resources and services, calculates its blast radius, and routes a plan through approval, execution and verification workflows.

$21MFunding

Participant

Aug 19

Rillet

AI-native ERP platform where finance teams and AI agents run accounting together

$100MSeries C

Role not disclosed

Aug 18

Etched

Designs AI inference hardware systems combining specialized chips, racks and software.

$700MSeries D

Participant