Mainstay
An AI-powered real estate operations platform that gives residential property owners a unified record and automates ownership workflows.
>$18MFunding
ParticipantFL
FJ Labs
Activity from announced rounds
Activity in this selectionOct 6, 2026 · AI · Jan 1, 2026
FJ Labs specialises in early-stage marketplaces and network-effect businesses, co-investing globally with a particular focus on the US.
It looks for capital-efficient businesses with sound unit economics and the potential to lead their markets. Its stated process typically reaches an investment decision after two hour-long calls over two weeks.
FJ Labs takes an angel-style role: it does not lead rounds or take board seats. It joins institutional venture investors and helps portfolio founders prepare subsequent financings through introductions to other funds and its marketplace network.
Sources
- Rounds participated in
- 7
- Confirmed lead rounds
- 0 6 roles undisclosed
- New companies
- 7 First participation on record · 0 follow-on
- Funding in participating rounds
- $101.9M 6 disclosed · full round size, not this investor’s share
By stage
By primary sector
By country
Rounds
7 in this selectionFleek
Develops AI infrastructure for secondhand clothing industry
$25MSeries B
Role not disclosedMidas
Enables asset managers to convert institutional-grade investment strategies into regulatory-compl...
$50MSeries A
Role not disclosedM1X Global
Develops sovereign financial infrastructure and blockchain-based solutions for governments
$3MAngel
Role not disclosedArtemis
Provides AI-powered design sales financing and compliance automation for distributed energy
$6MSeries A
Role not disclosed1Buy.AI
Electronics procurement software combining component pricing and risk intelligence, sourcing workflows and a market for surplus inventory.
$3.9MSeed
Role not disclosedMine
Provides AI-powered personal finance tools for young adults
$14MSeries A
Role not disclosed