Why Indexing Generates the "Right" Price Why Invest in Your 20th Favorite Stock and not Your 1st?

Why Indexing Makes Sense

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Indexing works well in all asset classes. A key advantage of the passive approach is low management fees, low turnover costs and greater tax efficiencies. In every market, all stocks must be owned by some investor. There is no such thing as a stock not already owned by someone.
Source: http://www.investorguide.com/igu-article-995-stock-strategies-active-versus-passive-management.html