S3 Ventures portfolio

S3 Ventures has 3 portfolio companies on record at Recent Funding, with 2 investments in the last 12 months. It is a venture capital firm based in Austin, US, founded in 2005. Its most recent investment on record is MMI's $125M Series B+ round in October 2026, alongside BioStar Capital and Angelini Ventures. By category, its portfolio leans toward Data and analytics (2) and Health and bio (1). It has co-invested with Angelini Ventures, BioStar Capital and FirstMark.

Website: s3vc.com.

X: @S3ventures.

Type: Venture capital.

Portfolio on Recent Funding: 3.

Deals, last 12 months: 2.

Capital in their rounds: $175M.

Latest deal: MMI · Oct 8, 2026.

About S3 Ventures

Firm type: Venture capital.

Headquarters: Austin, US.

Founded: 2005.

Stages: Seed, Series A, Series B.

Sectors: Cloud Computing, Construction Tech, Data & Infrastructure, Developer Tools, Digital Health, Enterprise Software, Hardware, Healthtech, Medical Devices, SaaS.

Check size: $500K to $15M.

Leads rounds: Yes.

Portfolio companies: 122.

Exits: 1.

Rounds led: 1.

Firm profile: Fundraising Fox Open Dataset v2026-09, CC BY 4.0. Track-record counts are theirs, not Recent Funding's.

What S3 Ventures invests in

Data and analytics · 2 · 67%
Health and bio · 1 · 33%
Robotics and hardware · 1 · 33%
Sales and marketing · 1 · 33%
Media and content · 1 · 33%
AI agents · 1 · 33%
Cybersecurity · 1 · 33%

How S3 Ventures invests

Stage	Deals	Capital in rounds
Series B+	2 100%	$175M

Share is of the 2 rounds on Recent Funding that name S3 Ventures. Rounds with no announced date are left out of the year split, and "round" is a round whose stage is not on file.

S3 Ventures portfolio companies

MMMI$125MSeries B+ · Oct 2026
VVendelux$50MSeries B+ · Jul 2026
DDataBahnbacker

Company	Round with S3 Ventures	Total raised	Latest raise
MMMI Health and bio	Oct 8, 2026 Series B+ · $125M	$310M	Oct 8, 2026 Series B+
VVendelux Sales and marketing	Jul 8, 2026 Series B+ · $50M	$64M	Jul 8, 2026 Series B+
DDataBahn AI agents	backer	$40M	Jul 30, 2026 Series B+

Most frequent co-investors

Similar investors

Investors whose portfolios on Recent Funding center on the same category (Data and analytics).

Portfolio companies are the companies on Recent Funding with a round that lists S3 Ventures, which is a subset of its real portfolio. API: /api/v1/investors/s3-ventures (get a free API key). More: the most active VC firms and new venture capital funds.