AUM
Personal wealth ~$1B+ (GMO manages ~$38B in client assets)
Principals
2
Principal Net Worth
$2.0B
Data Flags
Net worth ~$1B+ verified (pledged 98% to climate causes per Bloomberg 2019); GMO manages $38B+; Giving Pledge signatory; UK-based (not Forbes 400)
Grantham Family Office
SFOHigh ConfidenceBoston, MA
Last verified: Jan 17, 2026
Details
- Source of Wealth
- Asset Management (GMO LLC co-founder)
- Assets Under Management
- Personal wealth ~$1B+ (GMO manages ~$38B in client assets)
- Source File
- research/organizations/grantham-family-office.md
- UID
- fo-grantham-family-office
Also Known As
Jeremy Grantham Family OfficeGrantham CapitalGrantham Environmental TrustGrantham, Mayo, Van Otterloo
Principals (2)
Team Members (6)
Related Entities (6)
GMO LLCSubsidiary
Asset management firm managing ~$38B
Grantham 13F HoldingsHolding Company
Public equity holdings
Grantham Environmental TrustTrust
UK environmental philanthropy
Grantham Foundation for the Protection of the EnvironmentFoundation
Founded 1997 with wife Hannelore
Grantham Institute at Imperial College LondonSubsidiary
Climate research (major funder)
Grantham Research Institute at LSESubsidiary
Climate economics and policy (major funder)
Relationship Strength
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Sources (6)
Changelog
- 2026-01-17Upgraded to High confidence. Verified net worth ~$1B+ via Bloomberg 2019 pledge article (98% to climate). GMO portfolio at $37.8B per StockCircle. Added Grantham Institutes at Imperial/LSE. Cross-verified philanthropy commitment.
- 2026-01-16Enriched with full biography (born 1938, Sheffield/HBS education), GMO founding, wife Hannelore, environmental philanthropy, updated confidence to Medium
- 2026-01-15Auto-generated from principal Jeremy Grantham