About
Philosophy
Flexible capital serving businesses
Mindstone is a single family office built around a conviction: the best companies are built over time. Our 100% proprietary capital frees us from the time and liquidity constraints of traditional funds. We invest alongside founders to create lasting value.
Founder
Christophe Eberlé
A trained actuary, Christophe Eberlé founded Optimind in 2000, a consulting firm specializing in actuarial and risk management. Over 15 years, he built a group of 350 professionals, completing several bolt-on acquisitions. In 2019, Ardian took a minority stake in Optimind. In 2023, the group was sold to Accenture. Drawing from this complete entrepreneurial journey — creation, build-up, fund partnership, strategic exit — Christophe structured Mindstone as a family office in 2024, deploying his personal capital in Private Equity, Real Estate and Financial Assets.
“To be the trusted partner for creating sustainable and responsible value in an ever-changing world.”
Our activities
Asset classes
Private Equity
Majority and minority operations, alone or co-invested, in companies. Flexibility and operational support.
Real Estate
Heritage and opportunistic strategy combining long-term vision, selectivity and active asset management.
Financial Assets
Diversified allocation in liquid assets via external managers.
Responsible investment
Mindstone integrates ESG considerations into every investment opportunity. We believe sustainable performance comes through responsible, well-governed companies that are mindful of their impact.