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Haystack — Portfolio, Page 4

Investor actively backing innovative startups and growth-stage companies across various industries and funding rounds.

157
Companies
$2.5B
Total invested
$17.4M
Avg. check
68
Industries
Software 10Artificial Intelligence (AI) 8Health Care 5Enterprise Software 4Productivity Tools 3SaaS 3+62 more
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Portfolio companies

Showing 7396 of 157
Oboe
December 2025

Oboe is an AI-powered educational platform that offers resources for learning.

Artificial Intelligence (AI) · New City$16.0M Series A
Antimatter Systems
January 2023

Antimatter Systems is a learning and edtech company.

Education · New York$1.2M Seed
Emerge Tools
November 2021

Emerge is a suite of developer tools designed to supercharge mobile apps and the teams that build them.

Android · Santa Monica$1.7M Seed
Gather
November 2021

Gather is a video chat platform designed to make virtual interactions more human.

Augmented Reality · San BrunoSeries B
Codes Health
January 2026

Codes Health specializes in automated collection of medical records, gathering data from exchanges, providers, and patients.

Health Care · New YorkSeed
Tempo Automation
November 2022

Tempo Automation is transforming the way companies innovate and bring new electronic products to market.

Automotive · San Francisco$79.0M Post-IPO Debt
Astro
January 2022

Astro builds websites using server-side templating language that renders directly to HTML & CSS, eliminating heavy JavaScript automatically.

Software · San Francisco$7.0M Seed
alphaXiv
November 2025

alphaXiv serves applied AI teams by streamlining the path from research to production

Artificial Intelligence (AI) · San Francisco$7.0M Seed
Candu
November 2024

Candu is a product experience platform for software teams who want to design, refine, and personalize their application’s user interface.

Analytics · San Francisco$3.0M Undisclosed
Feroot Security
November 2025

Feroot Security platform protects the client-side javascript code of web applications against client-side attacks and compliance violations.

Cyber Security · Toronto$14.0M Series A
nTopology
November 2021

nTopology is a company that develops software used in the design and manufacturing of 3D-printed parts and products.

3D Printing · New York$65.0M Series D
People Data Labs
November 2021

People Data Labs is a software firm offering compliant data and their b2b solutions.

Analytics · San Francisco$45.0M Series B
Elroy Air
November 2024

Elroy Air is a logistics company that specializes in the fields of logistics, robotics, and air transportation.

Aerospace · San Francisco$6.6M Undisclosed
Solo.io
October 2021

Solo.io delivers cloud-native API and service mesh solutions, built on Istio and Envoy, to secure and scale apps across any environment.

Agentic AI · Cambridge$135.0M Series C
Esper
October 2021

Esper is a platform for Android enterprise device management and DevOps to ensure device security.

Application Performance Management · Bellevue$60.0M Series C
Lively
October 2021

Lively is a modern Health Savings Account (HSA) platform for employers and individuals.

Financial Services · San FranciscoSeries C
Hubilo
October 2021

Hubilo is an all-in-one virtual and hybrid event platform offering an engaging and interactive event experience.

Enterprise Software · San Francisco$125.0M Series B
Matcha
October 2024

The best way to hire clinical talent.

Artificial Intelligence (AI) · Brooklyn$2.0M Pre-Seed
Moxie
March 2026

Moxie provides comprehensive software for managing MedSpa operations, including compliance, marketing, and patient management.

Health Care · New York$25.0M Series C
Birches Health
February 2026

Birches Health provides therapy and support for those struggling with behavioral and process addictions.

Addiction Treatment · PhoenixSeries Unknown
Blockit AI
January 2026

Blockit AI delivers an AI scheduling agent that coordinates, books, and reschedules meetings across calendars and time zones.

Artificial Intelligence (AI) · San Francisco$5.0M Seed
EraDrive
December 2025

EraDrive is a startup specializing in autonomous spacecraft navigation and collision avoidance.

Artificial Intelligence (AI) · Palo Alto$6.2M Seed
Scribe
November 2025

Scribe offers a workflow AI platform helps organizations capture and optimize how work gets done.

Artificial Intelligence (AI) · San Francisco$75.0M Series C
Pangram Labs
June 2025

Highly accurate technology to identify AI-generated content.

Artificial Intelligence (AI) · Brooklyn$2.7M Seed

Where Haystack invests

Software10
Artificial Intelligence (AI)8
Health Care5
Enterprise Software4
Productivity Tools3
SaaS3

About Haystack's portfolio

How many companies has Haystack invested in?

Haystack has invested in 157 companies tracked in our database. The portfolio spans multiple industries and funding stages, from seed-stage startups to late-stage companies.

What industries does Haystack invest in?

Haystack's top investment sectors include Software, Artificial Intelligence (AI), Health Care, Enterprise Software, Productivity Tools. The firm invests across 68 different industry categories.

What is Haystack's largest investment?

Among tracked funding rounds, Solo.io received $135.0M in a Series C round. Haystack's total known invested capital is $2.5B.

What is the average investment size for Haystack?

Haystack's average investment size is $17.4M across its portfolio of 157 companies.

What are Haystack's most recent investments?

Recent Haystack portfolio additions include Oboe, Antimatter Systems, Emerge Tools, Gather, Codes Health. These companies were founded in 2020 or later.

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