Updated October 2026 · Mike Shell, Chief Investment Officer

A benchmark is the standard a portfolio’s results are measured against, usually a market index. The choice decides what counts as risk. Against an index, risk is falling behind it. Against your objective, risk is losing money.

Losing less than an index is still losing.

Why it matters. Much of the industry is paid to stay close to an index. A manager who falls 30% when the market falls 35% has outperformed and usually keeps the account. The client still lost 30%. A benchmark is useful for one question: did the manager add anything over a low-cost index fund? It becomes a problem when staying near the index replaces the goal the money was meant for.

The math. On $10 million, an index down 35% leaves $6.5 million. A portfolio down 30% leaves $7 million: five points better, and still a 43% gain from getting back to $10 million. Tracking error and the up- and down-capture ratios measure distance from the index, not from your money. A fair comparison covers a full market cycle, including its worst decline.

How it’s applied in ASYMMETRY® Managed Portfolios. The objective is in dollars, not a benchmark: smaller losses and larger gains across a full market cycle. It starts from three answers: how much decline you could live with, the return you need, and what your balance sheet can absorb. An index is context. Your objective is the measure.

Common misconceptions. Beating a benchmark isn’t the same as reaching your goal. An index isn’t safe because it’s passive: it carries every decline the market does, including the S&P 500’s 55% fall from 2007 to 2009, with dividends. And the benchmark should fit the strategy. A portfolio that can hold cash will look different from a fully invested index every year, so judge it over a full cycle.

Related terms. Absolute returns: measured against zero. Relative return: measured against an index. Downside capture, upside capture and the S&P 500® Index follow in the lexicon. Part of the ASYMMETRY® guide to asymmetric investing.

Mike Shell is the Founder and Chief Investment Officer of Shell Capital Management, LLC, and portfolio manager of ASYMMETRY® Managed Portfolios, with nearly three decades of live-market experience across multiple full market cycles.