Updated:
Six & Seven Invest
Marc Smit of Royal Smit & Zoon runs Six & Seven Invest, a Dutch single-family office deploying long-duration capital across technology and real assets...
Six & Seven Invest
Six & Seven Invest operates as the private investment vehicle for Marc Smit and his family, whose wealth originates from Royal Smit & Zoon, founded in 1821. The business transformed from a Dutch trading house into a global specialty chemicals manufacturer supplying sustainable leather tanning agents and fish oil derivatives. The family's deep industrial roots and seventh-generation stewardship inform the office's long-duration capital posture, allowing it to hold assets across cycles without institutional redemption pressures. The firm deploys capital across a broad mandate that spans early-stage venture, growth equity, private credit, real estate, and infrastructure. Confirmed investment activity touches sectors including ClimateTech, Energy Transition & Renewables, AgriTech & FoodTech, Industrial Tech, and FinTech. Geographic exposure covers Europe, North America, Asia, and South America — reflecting the supply-chain footprint of the underlying operating business, with known industrial real estate holdings in the Netherlands, Italy, and China. The office typically co-invests alongside specialist managers rather than aggregating capital into blind-pool funds, keeping its decision-making granular and asset-level. The Smit family maintains a deliberate separation between its commercial and philanthropic activities. The Koornzaayer Foundation, established by sixth-generation family member Joost Smit, operates independently from the investment office, directing capital toward cultural and social initiatives. The family has not disclosed aggregate AUM or total deployment figures, and the office does not maintain a public website, conducting business through private networks and direct relationships with entrepreneurs and fund managers. Six & Seven's structural differentiator lies in its industrial-operator DNA. Unlike family offices built from financial services fortunes, the Smit office grew out of a manufacturing company that manages chemical supply chains and production facilities across multiple continents. That operational fluency — particularly in industrial process technology, advanced materials, and cross-border logistics — informs the office's investment underwriting. The architecture embeds a feedback loop between hands-on industrial knowledge and financial capital deployment, producing a pattern of investment in companies where physical-world complexity is the barrier to entry rather than pure software scaling.
General information
Firm type
Single Family Office
Year founded
—
AUM
Undisclosed
Location
Region
Europe
Country
Netherlands
City
Weesp
Corporate office
Weesp, Netherlands
Principals
Marc Smit
Principal
Sector focus
Frequently asked questions
Who runs investment decisions at Six & Seven Invest?
Marc Smit, a seventh-generation owner of Royal Smit & Zoon, functions as the principal directing investment decisions. The office operates with a lean structure typical of European industrial family offices — benchmarking and deal evaluation likely involve trusted external advisors and co-investor networks rather than a large internal team. No chief investment officer or investment committee members have been publicly named.
Does Six & Seven Invest participate in fund commitments or only direct deals?
The office engages primarily in direct investments and co-investments, consistent with its operational background and preference for asset-level control. While specific fund relationships are undisclosed, the mandate spans private equity, venture capital, private credit, and real assets, suggesting selective fund commitments where they provide access to sectors or geographies where the office does not maintain direct origination capabilities.
What investment stages does Six & Seven Invest typically target?
Confirmed investment activity spans early-stage venture and growth equity, particularly in technology sectors like ClimateTech, FinTech, and Enterprise Software. The office also holds later-stage private equity positions and direct real assets, producing a blended portfolio that pairs emerging-company exposure with cash-flow-generating infrastructure and property holdings.
Where does the underlying wealth come from?
The wealth originates from Royal Smit & Zoon, a Dutch specialty chemicals company founded in 1821. The firm produces leather tanning agents, fish oil derivatives, and sustainable chemical solutions from headquarters in Weesp, Netherlands, with production facilities in Amersfoort, Italy, and China. Marc Smit represents the seventh generation of family ownership.
Does Six & Seven Invest maintain philanthropic structures, and how are they separated?
Yes. The Koornzaayer Foundation, established by sixth-generation family member Joost Smit, operates as a legally distinct philanthropic entity focused on cultural and social causes. The foundation is organizationally separate from the investment office, following the European family-office convention of maintaining clear boundaries between for-profit investment activity and charitable giving.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
Need institutional-grade insight on family offices?
Altss delivers:
Prefer a guided tour?
We’ll walk you through: