# S3 Ventures

S3 Ventures is a Venture Capital based in Austin, United States.

## Overview

- **Organization type:** Venture Capital
- **Headquarters:** Austin, United States
- **Region:** North America
- **Address:** Austin, TX, United States
- **Founded:** 2005
- **Assets under management:** $1B+ (per the firm, 2025)
- **Website:** www.s3vc.com
- **LinkedIn:** https://www.linkedin.com/company/s3-ventures

## Regulatory record

- **Reports private funds:** No

## About

Founded in 2005, S3 Ventures is the largest and longest-serving venture capital firm born in Texas and investing nationwide. We empower visionary founders with the patient capital and true resources required to grow extraordinary, high-impact companies in Business Software and Healthcare Technology.

## Sectors

- Enterprise Software
- Digital Health
- Medical Devices
- Health IT
- Infrastructure
- Developer Tools

## Questions

### How is S3 Ventures structured differently from a traditional venture firm?

S3 Ventures is backed by a single philanthropic limited partner rather than a rotating set of institutional funds. This single-LP model eliminates continuous fundraising, removes fixed fund-life constraints, and allows the firm to hold positions longer than a typical 10-year venture fund. The permanent-capital structure gives it the operational flexibility to support companies through multiple stages and economic cycles.

### What check sizes does S3 Ventures typically write?

The firm makes initial investments between $500,000 and $15 million, leading Seed, Series A, and Series B rounds. S3 can commit more than $25 million over the lifetime of a single company, a figure disclosed on its website in 2025. The full range covers everything from early-seed experiments to meaningful growth-stage follow-ons.

### Does S3 Ventures invest only in Texas-based companies?

No. While S3 is headquartered in Austin and brands itself as 'Born in Texas,' it invests nationwide. Its active portfolio and exit history include companies with roots across the United States, and the firm does not restrict sourcing by geography.

### Which sectors does S3 Ventures focus on, and which does it explicitly avoid?

S3 concentrates almost exclusively on two buckets: Business Technology — enterprise software, IT infrastructure, developer tools, and tech-enabled business services — and Healthcare Technology, which covers medical devices, diagnostics, and data-driven healthcare software. The firm does not publicly pursue consumer internet, gaming, or deep-tech sectors like quantum computing and aerospace.

### Who runs investment decisions at S3 Ventures?

S3 Ventures does not publicly disclose its full investment committee or named managing partners on its primary website. Principal identities and decision-making roles remain unpublished in the sources consulted for this profile.

## Related profiles

- [S2S Ventures](https://altss.com/profile/s2s-ventures)
- [S4S Ventures](https://altss.com/profile/s4s-ventures)

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Last updated: 2026-06-03T20:00:00.000Z

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