.406 Ventures portfolio

.406 Ventures (Venture capital) is known to hold 51 companies, 34 of them startups. 18 of them are hiring now, with 300 open roles. Its companies closed 5 venture rounds in 12 months, raising $94.1M. Most of them work in AI Agents, Care Coordination & Population Health, Psychiatric Care.

Source: Alion Venture capital Oct 3, 2026
Investments
51
34 of them startups
Hiring now
18
300 open roles
Rounds in 12 months
5
$94.1M raised
Exits
1

Companies .406 Ventures has invested in

Mindgard Penetration Testing · United Kingdom Series A $30M · 1 mo ago portfolio pageSep 25
Nace.AI Higher Education Seed $21.5M · 4 mo ago 17 roles portfolio pageSep 25
RELAI AI Agents · United States Venture round $4.6M · 6 mo ago portfolio pageSep 25
Valerie Health Medical AI · United States Series A $30M · 9 mo ago 12 roles portfolio pageSep 25
FamilyWell Health Psychiatric Care · United States Series A $8M · 10 mo ago portfolio pageSep 25
Diana Health Telemedicine & Virtual Care · United States Series C $55M · 12 mo ago 96 roles portfolio pageSep 25
Nema Health Psychotherapy & Counseling · United States Series A $14.5M · 23 mo ago portfolio pageSep 25
Abacus Insights Health Data & Interoperability · United States Venture round $6.3M · 2 yr ago 13 roles portfolio pageSep 25
RAD Security Cloud Security · United States Venture round $10M · 2 yr ago portfolio pageSep 25
Heartbeat Health Penetration Testing · United States Venture round $24M · 2 yr ago 12 roles portfolio pageSep 25
Indico Data Document AI · United States Venture round $19M · 2 yr ago 2 roles portfolio pageSep 25
OncoveryCare Cancer Care Centers Seed $4.5M · 2 yr ago 5 roles portfolio pageSep 25
Instride Health Psychotherapy & Counseling Series B $30M · 2 yr ago 7 roles portfolio pageSep 25
RapidFire AI AI Agents · United States Venture round $4M · 2 yr ago portfolio pageSep 25
AristaMD Primary Care & Medical Centers · United States Venture round $17.1M · 2 yr ago portfolio pageSep 25
Telmai Data Quality & Observability Seed $5.5M · 3 yr ago portfolio pageSep 25
Promethium AI Data Analysts & Text-to-SQL · United States Venture round $100k · 3 yr ago portfolio pageSep 25
Big Health Digital Therapeutics · United Kingdom Series C $75M · 4 yr ago 2 roles portfolio pageSep 25
Closedloop Venture round $34M · 5 yr ago portfolio pageSep 25
HYPR Fraud Detection · United States Venture round $35M · 5 yr ago portfolio pageSep 25
Equip Digital Mental Health · United States Venture round $17M · 5 yr ago 13 roles portfolio pageSep 25
ChaosSearch Log Management & Analytics · United States Series B $40M · 5 yr ago portfolio pageSep 25
Trilio Backup & Disaster Recovery Venture round $15M · 5 yr ago portfolio pageSep 25
Onapsis Application Security · United States Series D $55M · 5 yr ago 5 roles portfolio pageSep 25
Wellist United States Venture round $3.5M · 6 yr ago 4 roles portfolio pageSep 25
Cortica Disability Support Services · United States 84 roles portfolio pageSep 25
Vitalize Hospital Operations Software · United States 12 roles portfolio pageSep 25
Bluebird Kids Pediatric Care 8 roles portfolio pageSep 25
Theta AI Agents · New Zealand 7 roles portfolio pageSep 25
Helm Health Insurance & Benefits 7 roles portfolio pageSep 25
About Us Women’s Health & Maternity · United States 2 roles portfolio pageSep 25
Arboretum LifeSciences, Inc. Precision Medicine portfolio pageSep 25
Ascellus Psychiatric Care portfolio pageSep 25
Bobsled Information Security portfolio pageSep 25
Genesiscomputing Data Transformation & Orchestration portfolio pageSep 25
Keebo Data Quality & Observability · United States portfolio pageSep 25
On Belay Health Solutions Primary Care & Medical Centers portfolio pageSep 25
Portrait Research Smartphones portfolio pageSep 25
Redox Health Data & Interoperability · United States portfolio pageSep 25
Rewards & Inc Financial Software & Embedded Finance portfolio pageSep 25
Rooncyber DevOps & Platform Engineering portfolio pageSep 25
Thanks for visiting IBM.com Security Operations portfolio pageSep 25

Focus

Markets
AI Agents8%
Care Coordination & Population Health6%
Psychiatric Care6%
Pediatric Care6%
Women’s Health & Maternity6%
Health Data & Interoperability4%
Primary Care & Medical Centers4%
Digital Mental Health4%
Where its companies are
United States43%
United Kingdom4%
New Zealand2%
Stage of its companies
Venture, series not stated52%
Series A16%
Series C and later12%
Pre-seed & seed12%
Series B8%

Questions about .406 Ventures

How many companies has .406 Ventures invested in?

.406 Ventures is known to hold 51 companies: 34 startups, and 1 exits so far, read from its own portfolio page and the funding rounds that name it.

Is .406 Ventures investing now?

.406 Ventures has no round in the press in 12 months and no new company on its portfolio page in 90 days.

What does .406 Ventures invest in?

The markets of the companies .406 Ventures holds: AI Agents (8%), Care Coordination & Population Health (6%), Psychiatric Care (6%), Pediatric Care (6%), Women’s Health & Maternity (6%).

Which .406 Ventures portfolio companies are hiring?

18 companies .406 Ventures holds are hiring now, with 300 open roles listed on this page.

Who does .406 Ventures invest alongside?

The investors that hold the most companies together with .406 Ventures: Optum Ventures, Y Combinator, AlleyCorp, Greycroft, General Catalyst.

How this page is made

A company counts as a holding when the investor’s own portfolio page links to it, a program’s catalog lists it, or a funding round in the press names the investor. The numbers are rebuilt every night; each company shows where it came from and when it was first seen.

Sources: its portfolio page, read Oct 3

.406 Ventures portfolio: 51 known companies. Alion, Oct 3, 2026. https://alion.io/company/406-ventures/portfolio

Licence: CC BY-SA 4.0JSON