Benchmark

A benchmark is the yardstick a family holds its portfolio up against. Common benchmarks include broad stock-market indexes, bond indexes, or blended combinations of both — weighted to match a portfolio's target mix of assets. The benchmark itself earns no fees and takes no operational costs, so it sets a useful baseline for asking whether active management is adding value or eroding it.

Choosing the right benchmark is where things get genuinely difficult for family offices. A family with a diversified balance sheet that includes private equity, direct real estate, private credit, and liquid securities cannot fairly compare everything to a single public-market index. Families typically construct a asset allocation–based blended benchmark — weighting several indexes together to mirror the portfolio's intended structure — so the comparison is honest rather than flattering.

A hypothetical founder who sold her logistics company and reinvested across public equities and private funds might find her liquid sleeve benchmarked to a broad equity index while her private holdings are measured against a private-equity benchmark with an appropriate lag for valuation timing. The investment policy statement is the natural place to define benchmarks formally, locking in the standard before results are known rather than choosing one retroactively.