At a Glance
FJ Labs is a prolific venture capital firm founded in 2015 by Fabrice Grinda, the co-founder of OLX, and Jose Marin. Based in New York, the firm has become one of the most active early-stage investors globally, with a laser focus on marketplace and network effect businesses. The firm's thesis is rooted in Grinda's extensive experience building and scaling OLX into one of the world's largest classified marketplaces. FJ Labs takes a data-driven approach to investing, making decisions quickly based on their deep understanding of marketplace dynamics and unit economics. They invest across all sectors and geographies, from food delivery platforms like Rappi to luxury resale marketplaces like Rebag. The firm is known for writing smaller checks but making a high volume of investments, typically participating in pre-seed, seed, and Series A rounds. Their portfolio spans over 800 companies across more than 50 countries, making them one of the most globally diversified VC firms focused on marketplaces.
“Backs marketplace and platform founders globally, leveraging deep marketplace operating expertise from founding OLX and other platforms.”
Fabrice Grinda and Jose Marin are the founding partners. Grinda graduated summa cum laude from Princeton in 1996, then founded the European auction site Aucland in 1998, raising $18 million from Bernard Arnault's venture fund before selling in 2000, and the mobile media company Zingy in 2000, which reached $200 million in revenue and sold to Japan's For-Side for $80 million in 2004. In 2006 he co-founded the classifieds platform OLX with Alec Oxenford, scaled it past 90 countries and 150 million monthly visitors, sold it to Naspers in 2010 and stayed on as chief executive until 2013.
Arne Halleraker and Jeff Weinstein are partners. William Guillouard is operating partner, Matthew Stone is chief operating officer, Ariel Lebowits is chief financial officer and Jaye Landow heads investor relations. The venture partner bench includes Josh Breinlinger, Olivier Grinda, Anshul Ruparell, Erez Kalir, Mark Lurie, Daniel Simon and Guimar Vaca Sittic.
FJ Labs began as a series of small annual co-investment vehicles rather than a single institutional pool. SEC Form D filings show FJ Labs 3VC LLC raising $5.5 million from 86 investors in 2016, FJ Labs 4VC LLC $5.8 million from 74 investors in 2017, FJ Labs 5 VC $5.1 million in 2018, FJ Labs 6 VC $6.3 million from 89 investors across 2018 and 2019, and FJ Labs 7 VC $0.9 million in early 2019. A parallel FJ Labs Entrepreneurs Fund has been filed annually as a series of FJ Labs Funds, LP every year from 2020 through 2025.
The firm institutionalized in 2021. FJ Labs III, LP filed its Form D in July 2021 and reported $122.1 million sold to 58 investors by September 2022, while FJ Labs Archangel I, LP filed in August 2021 and reported $117.2 million from 54 investors, roughly $239 million across the pair. Press accounts put the two-fund close at $260 million. FJ Labs IV, LP filed in March 2025 and had reported $73.5 million from 42 investors as of March 2026. Offering amounts on all three institutional vehicles are listed as indefinite.
FJ Labs primarily invests at the Pre-Seed, Seed, Series A stages. This means they focus on companies that are at the earliest idea or prototype phase.
FJ Labs is headquartered in New York, NY. Many of their portfolio companies are also based in this region, though they invest across geographies.
FJ Labs focuses on investments in Marketplace, Consumer, Fintech, Enterprise. Their portfolio reflects deep expertise and networks within these sectors.
FJ Labs's typical investment check size ranges from $250K to $5M. Actual amounts may vary based on the stage, sector, and specific opportunity.
FJ Labs manages approximately $1B in assets under management (AUM) across their funds.
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