The Altss family office database
A family office database is a structured directory of family offices with firm identity, location, type, AUM band, and, where publicly observable, decision-makers and mandate activity. The Altss family office database covers 9,000+ family offices globally, built from SEC filings, public registries, and OSINT signals rather than self-reported surveys.
The Altss family office database maps the global family office universe: single-family offices, multi-family offices, and the principal investment arms that deploy private wealth into alternatives. Each record starts from the public source of truth. Single-family offices surface through Form D co-investments, Schedule 13D positions, real-estate records, and private-foundation Form 990 filings. Multi-family offices surface through Form ADV and the SEC's Investment Adviser Public Disclosure system. Press, state registries, and domain intelligence fill the gaps.
Coverage is organized so a fundraiser can move from a broad universe to a short, thesis-fit target list. Offices are grouped by type, wealth origin, AUM band, and geography, with named decision-makers surfaced where the public record supports it. The database is not a static list. Material events are tracked through OSINT, and public pages carry a stable, dated snapshot while deeper fields refresh inside the platform.
Family office coverage at a glance
9,000+
Family offices globally
30,000+
Institutional investors, RIAs, and family offices
150,000+
Private-markets entities indexed
7–21 days
Typical public-page refresh cycle
How the database is organized
By type.
Single-family offices, multi-family offices, and principal investment arms are separated, because each is discovered differently and decides differently.
By AUM band.
Offices are placed in bands from under $100M to $100B+, using estimates with confidence flags rather than false-precision point figures.
By wealth origin.
Technology, finance and trading, industrial, real estate, energy, consumer, and inherited or dynastic wealth, which is the strongest predictor of strategy fit.
By geography.
37 metros and 6 regions, from New York and London to Miami, Singapore, Dubai, Zurich, Geneva, and Monaco, with adjacency for tax-migration context.
By sector tilt.
The sectors each office has actually backed, drawn from public deal records and press, so outreach leads with a matching thesis.
By decision-maker.
Named principals, CIOs, and investment leads where publicly observable, with verified emails re-checked on a sub-30-day cycle.
How the family office database is sourced
Primary sources: SEC Form ADV and the Investment Adviser Public Disclosure system, Form D and Schedule 13D/13G, Form 13F, real-estate and UCC records, private-foundation IRS Form 990 filings, state business registries, and press. Records are enriched with Altss OSINT signals where publicly observable.
AUM is expressed in bands with confidence flags, not two-decimal point estimates. Public pages carry a stable, crawlable snapshot; contact detail and current-mandate specifics stay inside the platform.
By Altss Research Team. Recurring refresh across public records, with deeper fields available to authenticated users.
AUM bands used in the database
Family office AUM is often private and uncertain, so Altss publishes bands with confidence flags rather than single point figures.
| AUM band | Typical office profile |
|---|---|
| Under $100M | Emerging office, often run as a virtual or embedded model within an operating business |
| $100M–$500M | Lean single-family office or an established multi-family office client |
| $500M–$1B | Staffed single-family office with a defined allocation program |
| $1B–$5B | Institutional single-family office with direct-deal and co-investment activity |
| $5B–$25B | Multi-strategy office rivaling a mid-size institution, active across asset classes |
| $25B+ | Dynastic or founder office at institutional scale, often with in-house teams |
Bands are directional and reflect typical structures, not a guarantee for any single office. AUM figures for private offices are estimated with confidence flags and dated to the source.
What is public and what is in the platform
Public pages show the shell of every office: name and alternate names, region, type, AUM band, public-source citations, and a last-verified date. That is what crawlers and casual readers see.
The platform holds the working data: named decision-makers and verified contacts, recent commitment specifics, mandate detail beyond regulatory filings, peer comparisons, and signals. Altss is in-platform only, with no CSV export and no public API.
Explore by family office type
The two core archetypes decide and disclose differently. Start with the one that matches your raise.
Single-Family Offices (SFOs)
One family, direct capital, usually exempt from SEC registration.
Multi-Family Offices (MFOs)
Multiple families, Form ADV registered, a channel with a diligence gate.
What is a family office?
Definition, structure, AUM thresholds, and how they invest.
Altss for family offices
How allocator teams use Altss for peer and co-investment research.
RIA directory
The broader registered-adviser universe most MFOs sit inside.
Explore by geography
Family office coverage spans 37 metros and 6 regions. A selection of the primary hubs:
Family office database — questions
What is a family office database?
How many family offices does Altss cover?
Where does Altss get family office data?
Can I export the family office list?
How current is the family office data?
What is the difference between a single-family office and a multi-family office in the database?
How much does access cost?
Does the database cover international family offices?
Put the family office database to work on your raise.
Book a demo and we'll pull a sample of family offices matched to your strategy, sector, and check size, live on the call.