Trusted Knowledge You Can't Google
Access insights from a vetted network of family offices, fund managers, and operators who share real experience—not noise. Every conversation is rooted in trust, relevance, and aligned interest.
Make Decisions 6x Faster with AI Agent
No more endless threads or scattered notes. Our AI Analyst distills what matters, connects the dots, and surfaces the next best step—so you act quickly, and with confidence.
Smarter Syndication, Seamless Co-Investment
Get matched with the right co-investors based on actual deal interest, not mailing lists. Collaborate on opportunities with those who share your thesis, timing, and conviction.

MJ Gottlieb
"And so when we have the power of community it enables us to heal. When we have the power of the 361 community, you're able to bring incredible people together, right? And amazing things happen. And that's something that is within the DNA of the 361 firm that I have not seen anywhere else."

A global community collaborating on investing and philanthropy since 2015, now connecting over 10,000 participants across 100+ cities in 20+ countries.
About 361Firm
361Firm is a global network founded in 2015 by Mark Sanor (30+ years in family offices, law, banking).
- Connects single family offices, institutional investors, fund managers, CXOs, and thought leaders.
- Hosted 1,000+ events and engages online weekly.
- Amplifies family offices as global changemakers, fostering collaborative learning and reducing dysfunction.
- Name "361Firm" (360 One Firm) draws from Mark's 2005 alumni roundtables for multi-perspective investing, and Arthur Andersen's collaborative culture for holistic, cross-border insights.
Our Digital Platform
Launch of 361Firm.Digital enables 24/7 AI-powered connections. Members navigate ecosystems to find/vet people and deals via shared interests. Key features:
- Collaborative deal-sharing and intelligence for QP allocators.
- Community insights from co-investors.
- Capital raising via broker-dealer ($250M+ raised).
- SPVs/feeder funds, e.g., $7.5M angel co-investments; upcoming "Special Opportunities" fund.
Membership & Growth
Join starting at $361/year for Basic (includes weekly Briefings/Deep Dives); higher tiers for more features. Become a Member
Encourage growth via introductions with revenue-sharing (excludes U.S. securities success fees without broker-dealer). See Fee-Sharing Agreement Interested in independent banking? Learn More
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