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Diversification

The practice of spreading investments across different asset classes, geographies, industries, and structures so that the failure of any single holding does not devastate the overall portfolio.

Diversification rests on a straightforward idea: different assets often move differently. When equities fall sharply, high-quality bonds have historically behaved differently; when one geography struggles, another may hold up. By holding a mix, a family office aims to reduce the impact of any single bad outcome on the whole. It does not eliminate loss — it limits the damage a single failure can cause, which is a meaningful distinction.

For families, diversification operates at several levels simultaneously. Within public equities, it means holding many companies across sectors and geographies rather than a handful of names. Across the whole portfolio, it means blending public markets, private equity, real assets, and liquid reserves rather than concentrating in one structure. This multi-layered approach is one reason asset allocation is treated as foundational work inside a family office, not a one-time decision.

A common misconception is that diversification guarantees positive returns or prevents losses in a severe market crisis. Correlation — the degree to which assets move together — can rise sharply during market panics, meaning assets that normally behave independently may fall together precisely when diversification is needed most. Families commonly account for this by including assets with genuinely different underlying drivers — for instance, combining financial assets with physical real estate or private operating businesses — rather than simply holding many funds that ultimately own similar underlying securities. Concentration risk is, in many respects, the problem that diversification is designed to solve.

関連用語

ファミリーオフィス

What Is a Family Office?Do You Need a Family Office?Single Family Office (SFO)Multi-Family Office (MFO)Micro Family OfficeWhat a Family Office CostsWhy Family Offices Exist

ファミリーオフィスを構築する

How to Build a Family Office From the Ground UpStep 3: The Organizational StructureStep 4: Internal vs. Outsourced (Build vs. Buy)The First 90 Days: Turning the Lights OnStep 1: Define the Family Office's PurposeStep 2: Inventory the Family's AssetsStep 5: Hire the Core Team

投資

How Family Offices InvestDirect InvestingAsset Allocation for Family CapitalThe Investment Policy Statement (IPS)Liquidity, Concentration, and RiskPublic Markets: Equities and Fixed IncomeReal Estate in the Family Portfolio

オペレーション

Family Office AccountingFamily Office TechnologyFamily Office CybersecurityConsolidated Reporting: One True Net WorthBill Pay, AP, and Financial ControlsFamily Office Software, Category by CategoryBanking, Custody, and Treasury

ガバナンスと相続

Family GovernanceEstate Planning and Wealth TransferHow Family Offices Manage TaxPhilanthropy and the Family OfficeThe Family ConstitutionSuccession: The Office After the FounderPreparing the Next Generation

業界

Careers in Family OfficesHow the Family Office Industry Is ChangingFamily Offices and Regulation

役割と人員配置

Family Office Roles & Staffing, MappedFamily Office CEO / President / Managing DirectorChief Investment Officer (CIO)Portfolio Manager / Investment DirectorAsset Manager (Real Assets)Chief Financial Officer (CFO)Controller

比較

Single vs. Multi-Family OfficeFamily Office vs. Wealth ManagerFamily Office vs. RIAFamily Office vs. Private BankFamily Office vs. Financial AdvisorFamily Office vs. Hedge FundFamily Office vs. Private Equity Firm