They are not actively managed so they seek to simply match the market return, rather than beat it. (teenanalyst.com)
This means that as an investor, since you can not possibly beat the market, then you should instead focus on matching the market's performance at the lowest cost possible. (fundrise.com)
For every investor who succeeds in beating the market, someone else has to fall short of matching the market. (freemoneyfinance.com)