A more appropriate concept is conventional investing strategy versus evidence based approach. The investing strategy is based on Nobel Prize winning theories of investing. Research and academia has shown majority of active managers fail to outperform and beat their corresponding index. This is due to the inconsistency that any manager can consistently time markets and chose individual stocks. By taking emotion out of the investment strategy and sticking to a strategy that works, has shown to be successful over time.
For a retail investor this may be a good option as they are low cost and fulfill the index criteria for passive investors. The issue lies within the fund and how the index is managed. Our investment strategy alleviated the “reconstitution effect” that retail investments possess. Reconstitutioning over time causes securities within an index to migrate from one asset class to another (such as from small cap to large cap). The index’s characteristics may be significantly different 11 months after the reconstitution due to securities moving. An index that purports to represent a certain asset class may not offer thorough, consistent exposure to the underlying risk factors. In simple, looking at a portfolio that takes into account these factors compared to a Vanguard portfolio, you will see the overall effect of the portfolio performance enhancement. Other factors are the tilts within the indexes that academia has shown to have additional premiums to your investment performance.