Rules-Based PortfoliosRanked by Performance

Rules-based portfolios follow a systematic, pre-defined process for making investment decisions -- such as when to buy, sell, or rebalance -- without relying on discretionary judgment. The rules might be based on technical signals, valuation metrics, momentum indicators, or macroeconomic conditions, but the key feature is that they are applied consistently regardless of market sentiment or short-term noise.

By removing emotion and discretion from the investment process, rules-based strategies aim to avoid the behavioral biases that cause many investors to buy high and sell low. The tradeoff is rigidity: a rules-based system will continue following its process even when it seems obviously wrong in the moment, which can produce extended periods of underperformance when market conditions fall outside the strategy's design parameters. Understanding the logic behind the rules helps investors stick with the strategy when it struggles.