OS Fund portfolio

OS Fund has 4 portfolio companies on record at Recent Funding.

Website: osfund.co.

Type: Venture capital.

Portfolio on Recent Funding: 4.

Deals, last 12 months: 0.

Capital in their rounds: $53M.

Latest deal: 3T Biosciences · Oct 1, 2017.

About this page

It is a venture capital firm based in Park Ridge, US, founded in 2014. Its most recent investment on record is 3T Biosciences's $12M Seed round in October 2017, alongside Thiel Capital, Starlight Ventures, Menlo Ventures and 4 others. By category, its portfolio leans toward Health and bio (3) and Developer tools and cloud (1). It has co-invested with Menlo Ventures, CRV and Starlight Ventures, most often Menlo Ventures (2 rounds).

About OS Fund

Firm type: Venture capital.

Headquarters: Park Ridge, US.

Founded: 2014.

Stages: Pre-Seed, Seed, Series A.

Sectors: AgTech, AI & Machine Learning, Biotech, Consumer, Crypto & Web3, Fintech, FoodTech, Healthtech, New Materials, SaaS.

Check size: $1M to $2M.

Leads rounds: No.

What OS Fund invests in

Health and bio · 3 · 75%
Developer tools and cloud · 1 · 25%
Manufacturing and industrial · 1 · 25%
AI agents · 1 · 25%
AI infrastructure and compute · 1 · 25%
Robotics and hardware · 1 · 25%
Fintech · 1 · 25%
Insurance · 1 · 25%

How OS Fund invests

Stage	Deals	Capital in rounds
Seed	1 50%	$12M
Series B+	1 50%	$41M

OS Fund portfolio companies

33T Biosciences$12MSeed · Oct 2017
SSynthego$41MSeries B+ · Jan 2017
NNumat Technologiesbacker
MMoziobacker

Company	Round with OS Fund	Total raised	Latest raise
33T Biosciences Health and bio	Oct 1, 2017 Seed · $12M	$52M	Aug 25, 2022 Series A
SSynthego Health and bio	Jan 4, 2017 Series B+ · $41M	$459M	Feb 17, 2022 Series B+
NNumat Technologies AI agents	backer	$2M	May 27, 2025 Series B+
MMozio Fintech	backer	undisclosed	—

Most frequent co-investors

Similar investors

Investors whose portfolios on Recent Funding center on the same category (Health and bio).

How this is counted

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

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

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