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Single Family OfficePuts its own capital into companiesLAST VERIFIED Oct 2026 · 3 SOURCES

JMYX Holding

Also known as JMYX

Paris family office founded in 2014 by FircoSoft co-founder Jean Losco; minority co-investor in fintech companies and LP in private-equity, infrastructure and VC funds.

USEFUL FOR Fund managers raising capital · Founders · Business owners seeking a long-term partner · Co-investors

Family & background

FAMILY
Losco (Jean Losco)
WEALTH ORIGIN
FircoSoft (transaction-filtering software for banks)
HEADQUARTERS
Paris, France
FOUNDED
2014

Investment approach

SECTORS
FintechSoftware & SaaS
GEOGRAPHY
FranceEuropeNorth America
STAGES
SeedSeries AGrowthBuyout
ROUTES
Companies (own capital) · Funds (as LP)
STRATEGIES
Direct investmentsFunds (as LP)Private equityVenture capital

Overview

JMYX Holding was founded in September 2014 by Jean Losco, co-founder and former CEO of FircoSoft, after the sale of that company; its website describes it as a family office. It finances company growth with a focus on fintech, acting as a minority co-investor alongside lead funds, in holdings such as Neterium, Smartpush and Unowhy. It also commits to third-party funds, listing commitments from 2015 to 2026 including Omnes Capital, Tikehau, Five Arrows Secondary Opportunities VI, IK Partners 10, KKR Infra 5 and Truffle Capital. Initial investments were made in France and it says it is studying European and North American deals.

Holdings & investments (27)

  • KP2
    since 2026 · (fund commitment)
  • Truffle Capital 3
    since 2026 · (fund commitment)
  • KKR Infra 5
    since 2025 · (fund commitment)
  • Mircap Opportunities 2
    since 2025 · (fund commitment)
  • AE6
    since 2024 · (fund commitment)
  • IK Partners 10
    since 2024 · (fund commitment)
  • Smartpush
    Fintech · since 2023
  • Five Arrows Secondary Opportunities VI
    since 2023 · (fund commitment)
  • Turenne Hôtellerie 3
    since 2023 · (fund commitment)
  • KS6
    since 2022 · (fund commitment)
  • EG2
    since 2022 · (fund commitment)
  • Tikehau
    since 2022 · (fund commitment)
  • KPI
    since 2021 · (fund commitment)
  • AE5
    since 2020 · (fund commitment)
  • Omnes Capital
    since 2019 · (fund commitment)
  • AG2
    since 2018 · (fund commitment)
  • KS V
    since 2018 · (fund commitment)
  • Neterium
    Fintech · since 2017
  • Contineo Financial Risk Solution
    Fintech · since 2017 · Shown as 2017–2024 on the site (read as exited)
  • Unowhy
    since 2016
  • Medsenic
    Biotech & Life Sciences · since 2016 · Shown as 2016–2025 on the site (read as exited)
  • KS IV
    since 2016 · (fund commitment)
  • Palico
    Fintech · since 2015
  • Mercure (hotel, 2015–2026 on the site)
    since 2015
  • Fa Dièse 3
    since 2015 · (fund commitment)
  • EG 1
    since 2015 · (fund commitment)
  • Louandre

People

Frequently asked questions

JMYX Holding is a single family office based in Paris, France, founded in 2014.

JMYX Holding invests on behalf of the Losco (Jean Losco) family (FircoSoft (transaction-filtering software for banks)).

JMYX Holding invests its own capital into companies and in third-party funds as an LP. Its stated asset mix includes direct investments, funds (as lp), private equity and venture capital.

JMYX Holding invests at Seed, Series A, Growth and Buyout stages in Fintech and Software & SaaS.

Key people at JMYX Holding include Jean Losco (Founder).

JMYX Holding's holdings and investments include Neterium, Smartpush, Unowhy, Palico, Louandre, Mercure (hotel, 2015–2026 on the site), Contineo Financial Risk Solution and Medsenic, among others.