Operating companies
We co-found, own and help build companies — contributing engineering, product and operating experience, not just capital. Some we hold for years; others we have grown and exited.
Owners & operatorsMDN Holding is a private investment vehicle. We own and help build a small number of companies, and hold concentrated, long-term positions across public and private markets — then give them room and time to compound.
One vehicle, two disciplines. Companies we own and help build, and long-term positions we hold across public and private markets — all from our own balance sheet.
We co-found, own and help build companies — contributing engineering, product and operating experience, not just capital. Some we hold for years; others we have grown and exited.
Owners & operatorsLong-term positions in public markets — primarily broad index and managed funds — alongside a select few private equity funds. Patient, concentrated and low-turnover.
Buy & holdWe measure in years and decades. We would rather own a great business through a rough quarter than trade around it. Patience is the edge.
A small number of positions we know well, rather than a wide basket we don't. Conviction is expressed through size and time, not turnover.
With private companies we offer operating help — engineering, product, hiring — and otherwise stay out of the way. We back founders we trust.
MDN Holding invests its own balance sheet. No fund, no fee clock, no pressure to deploy. That freedom shapes every decision we make.
Companies we have owned and helped build, alongside the public and private market funds we hold for the long term.
We invest our own capital, with the patience that comes from having no one to answer to but ourselves.
MDN Holding ApS is the holding vehicle behind SDNielsen and M&M Development. It exists to compound capital quietly across public markets and a small portfolio of private companies.
Our operating background means we tend to invest where we can read the business — software, infrastructure, and the technology that runs modern companies.
Building something worth owning?
MDN Holding ApS