About Marius Nacht
Marius Nacht is a billionaire angel investor, the co-founder of Check Point Software Technologies, who has aggressively pivoted into healthcare and now writes substantial angel checks across digital health, AI in healthcare, biotech, and bio-convergence platforms. The thesis is personal and operator-driven rather than institutional, which means the diligence style is different from a fund: faster, more conviction-led, and more dependent on direct relationships with the founder.
The stated focus is on bio-convergence and digital health platforms, with a willingness to engage with companies at almost any stage where the technology is interesting and the team is credible. Nacht’s background as a serial software founder gives him unusual fluency in the engineering and product dimensions of healthcare companies, while his personal capital base allows him to commit substantial dollars without committee constraints. The investment activity is broad and not formally cataloged, but Nacht is widely known in the Israeli healthtech ecosystem as one of the most active and substantive angel investors in the category.
Check sizes sit in the 1 million to 5 million dollar range, which is large for an angel and effectively makes Nacht function as a fund-of-one at the early stage. Stage focus runs from pre-seed through Series A, with the willingness to engage with later rounds when the company is interesting. Geography is Israel-anchored but globally invested, particularly in companies with credible international ambition.
Decisions are personal: Nacht engages directly with founders and is the single point of contact. There is no published team or investment process, which is part of the appeal for founders who want a fast, conviction-driven decision rather than a slow institutional process.
Approach Nacht when you are an Israeli or Israeli-adjacent founder building a digital health, AI, biotech, or bio-convergence company with a credible technical thesis and a serious team. Pure consumer-wellness plays without depth will be a worse fit. The most reliable path in is a warm introduction from another Israeli technology operator, a healthtech VC who has co-invested with Nacht, or an academic medical-center figure who knows him personally. Cold outreach is unlikely to land. Time the conversation when you have a working prototype or research insight, a serious team, and a clear thesis. Nacht is best understood as a fast, substantive, founder-respecting capital source for serious technical founders rather than a generalist angel.
Founder reviews
Healthcare AI tools backed by Marius Nacht
Tools made by companies in Marius Nacht's portfolio that we cover in the directory.
Portfolio companies in our directory
Other portfolio companies
Companies in Marius Nacht's portfolio not currently in our directory.
- DayTwo
- aMoon Fund (founder)
- Raziel Therapeutics
- Veev
- OpenWeb
- Epitomee Medical
- Rapid Medical
- Lumen
- CustoMED
- Uniper Care Technologies
- Hippo Insurance
- Vectorious Medical Technologies
- Sinusafe Medical
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