However, the concept of Evidence-Based Investing is a more disciplined approach to asset management and securities selection. The practice involves analyzing past performance data with present economic circumstances. In other words, instead of using ,relationships or emotions to guide investment selection, EBI money managers utilize facts, logic and reason.
EBI involves extensive research to discover new factors and then test (and often reject) them against data from various investment time periods. Not only is the past used as prologue, but evidence-based investing practitioners also must pay careful attention to the current state of financial economics.
The primary goal behind evidence-based investing is to eliminate subjective factors that might influence decision making, such as some tidbit on the news or passage of new government legislation. An EBI portfolio starts with a carefully constructed asset allocation designed to meet a specific goal, with secondary considerations of lowering costs and tax liability. The evidence-based portfolio is regularly rebalanced to maintain its strategic asset allocation. Any new security introduced to the allocation must undergo disciplined analysis based on the current evidence for its fundamentals.
Generally, an EBI-constructed portfolio undergoes the following process:
- Asset Allocation – Determine how much to allocate to each asset class based on client goals and market-specific evidence.
- Security Selection – Each security is selected based on market- and manager-specific evidence for each asset class.
- Trading & Rebalancing – Portfolio changes are subject to specific guidelines regarding when and how to trade or rebalance given market-, tax- and transaction-specific evidence.
- Tactical Adjustments – Portfolio investment mix is strategically altered when a security or asset allocation class is weighted outside the established percentage ranges; it is feasible that some tactical changes are made in order to capture excess returns (higher gains or fewer losses) due to short-term fluctuations – as long as those decisions are based on fundamental and technical evidenced-based analysis.
While the evidence-based approach tends to be more technical than goal-oriented, it still relies on specific objectives. The strategy uses the most current evidence available to stratify securities by particular factors, such as size (small, medium or large cap stocks), style (growth, value or balanced) or timing (business life cycle or economic cycle).
The evidenced-based approach to investing is designed to replace guesswork with a disciplined, research- and analysis-based strategy that pairs past performance with the most current information available. It takes emotion and irrational behavior out of the investment equation by relying on a systematic analysis that combines strategic asset allocation, tactical security selection, global diversification, tax sensitivity and regular, disciplined portfolio rebalancing techniques.