FJ Labs

New York venture firm co-founded by Fabrice Grinda, among the world's most active marketplace investors. Writes programmatic pre-seed through Series A checks and typically co-invests rather than leading rounds.

Typical check size

$250K-$3M (stage-based estimate)

Founded

2015

Headquarters

10 E 53rd St, New York, NY 10022

AUM

N/A

Rounds they lead

Pre-Seed Seed

Rounds they invest

Pre-Seed Seed Series A

Portfolio companies we track

Startups in our directory that list FJ Labs as an investor (9 total).

Allset Restaurant ordering platform for contactless dine-in and local pickup.
Canid Scan-and-go vaccine operations platform for independent pediatric practices.
Cuenca Mexico City neobank for digital accounts and open-banking financial inclusion.
Everyrealm Metaverse real-estate investor and developer across NFT game worlds.
Fleek AI-powered wholesale marketplace for secondhand fashion supply chains.
Midas Berlin platform turning institutional investment strategies into compliant, composable on-chain tokens with instant redemptions.
Rigup Workforce platform for skilled trades in energy and infrastructure (now Workrise).
Rosebud AI AI game creation platform — generate games and assets from text prompts.
TruckSmarter Driver-first freight marketplace and financial platform for owner-operator truckers.

FAQs about FJ Labs

Stage fit, check size, thesis, and how founders typically approach this firm — based on public sources and our directory.

Per our directory, FJ Labs leads pre-seed and seed in name but is better known as a prolific co-investor from pre-seed through Series A. Fabrice Grinda has publicly described a programmatic stage mix (~70% seed and A).

FJ Labs founder Fabrice Grinda has publicly cited roughly $150K pre-seed, $300K seed, $500K Series A, and $700K Series B targets, with a blended average near $400K. Amounts can double with high conviction.

FJ Labs is headquartered in New York City (10 E 53rd St). Grinda has described roughly half of investments in the U.S. and Canada, with meaningful activity in Western Europe, Brazil, India, and other markets.

Our directory tags marketplace. FJ Labs specializes in two-sided network effects—marketplaces, e-commerce platforms, and B2B digitization—with additional interest in AI-enhanced marketplaces.

FJ Labs typically does not lead rounds or take board seats. It prefers to co-invest alongside lead VCs with smaller, programmatic checks—avoiding competition with top-tier seed leads.

Startups in our directory with FJ Labs listed include Allset (/startup/allset), TruckSmarter (/startup/trucksmarter), Fleek (/startup/fleek), Everyrealm (/startup/everyrealm), Cuenca (/startup/cuenca), and RigUp (/startup/rigup).

Founders can reach FJ Labs through fjlabs.com or Fabrice Grinda's public channels. Warm intros from marketplace founders or lead seed investors are the most common path; we do not list individual partner emails.

Our NYC early-stage seed firms guide profiles FJ Labs' marketplace specialization. We do not yet have a dedicated FJ Labs fund or deal article.

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