
Organization · Venture Capital
S3 Ventures
S3 Ventures is a venture capital firm based in Austin, Texas, focused on early-stage investments in business software and healthcare technology. With over $1 billion in assets under management, they provide patient capital to visionary founders across the United States.
Overview
What S3 Ventures does
What S3 Ventures is
S3 Ventures is a venture capital firm based in Austin, Texas, focused on early-stage investments in business software and healthcare technology. With over $1 billion in assets under management, they provide patient capital to visionary founders across the United States.
How it participates in the startup ecosystem
The current public profile supports funder and publisher capabilities. Each capability below is shown separately so organization identity and role-specific information do not get conflated.
Operational profile
Organization status and context
Organization status describes the entity itself. Funding and program availability appear within the relevant capability profile.
- Operational status
- Active
- Organization type
- Venture Capital
- Founded
- Founded in 2005
- Approximate age
- About 21 years
- Structured capabilities
- Funder · Publisher
- Last reviewed
- March 27, 2026
Official channels
Find S3 Ventures elsewhere
Open the official website or a supported primary organization account.
Capability profile
S3 Ventures as a funder
Investment thesis
S3 Ventures focuses on providing patient capital to early-stage technology companies, particularly in business software and healthcare technology, leveraging a unique single-LP structure for maximum alignment and long-term growth.
Focus narrative
S3 Ventures primarily invests in technology companies, focusing on two main sectors: Business Software and Healthcare Technology. The firm typically leads Seed, Series A, and Series B rounds, with initial investments ranging from $500,000 to over $15 million, and the capacity to invest more than $25 million over time.
Value beyond capital
S3 Ventures adds value to its portfolio companies through a unique single-LP structure that allows for patient capital and long-term support without the distractions of fundraising cycles. The firm focuses on building strong relationships with its portfolio companies, providing strategic guidance and resources to help them scale effectively.
Terms and economics
- Typical check
- $500,000–$15,000,000
- Sweet spot
- $25,000,000
Focus and fit
- Stages
- Seed · Series A · Series B
- Regions
- United States
Availability
- Currently deploying
- Yes
Portfolio and track record
- Recorded portfolio count
- 75
- Recorded notable exits
- Alkami, Levelset, and Favor
Portfolio context
S3 Ventures has made over 75 startup investments, which have collectively raised more than $3.5 billion. Notable portfolio companies include Acessa Health, which focuses on uterine fibroid treatment and was acquired by Hologic; Alkami, an online banking platform that went public on NASDAQ; Alleviant, specializing in interatrial shunt therapy for heart conditions; Allstacks, providing predictive DevOps analytics; Arpio, offering cloud disaster recovery solutions; and Briggo, a robotic barista company acquired by Coca-Cola.
Capability profile
S3 Ventures as a publisher
Editorial focus
S3 Ventures is a venture capital firm that invests in technology companies, primarily focusing on business software and healthcare technology. The firm leads Seed, Series A, and Series B rounds, providing initial investments ranging from $500,000 to over $15 million, with the capacity to invest more than $25 million over time. Founded in 2005 and based in Austin, Texas, S3 Ventures is backed by a single limited partner, allowing for a unique focus on long-term company building without fundraising distractions.
Audience value
S3 Ventures offers patient capital to early-stage companies, enabling them to focus on long-term growth without the pressures of frequent fundraising. Their unique single-LP structure allows for maximum alignment and support for portfolio companies.
Format and cadence
- Content formats
- newsletter
- Primary platform
- Website
- Cadence
- null
Availability
- Guest pitch state
- Not currently accepting
Audience and focus
- Audience
- Investors · Founders
- Regions
- United States
Flagship work and coverage
Flagship properties
S3 Ventures publishes the S3 Newsletter, which is available for subscription via their website.
Notable coverage
S3 Ventures has been recognized for its significant portfolio, which includes over 75 startup investments that have collectively raised more than $3.5 billion. Notable companies in their portfolio include Alkami, Acessa Health, and Allstacks.
Connected ecosystem
Continue from S3 Ventures
These links use structured organization type, sector, and regional relationships. They do not imply endorsement or commercial similarity.
Same organization type
Structured sector focus
Common questions
What to know about S3 Ventures
Upseed classifies S3 Ventures under the Venture Capital organization type. Its current public profile includes funder and publisher capabilities.
Source and update disclosure
Know what this page is based on
Source basis
Public organization and program material, official websites, and structured Upseed records.
Last reviewed
March 27, 2026
Known limits
Capability profiles appear only when a structured public profile also contains decision-useful role evidence. Terms and availability can change.
Upseed is an independent guide. It is not affiliated with or endorsed by the organization described on this page.