AGG`s all-in cost is low and more predictable than its rivals. In a segment where there are a handful of similar funds tracking essentially the same underlying index, holding and trading costs are the driving factors. AGG delivers its underlying index`s returns with precision and consistency. The fund also has a history of massive trading volume and tight spreads. AGG tracks our segment benchmark, providing excellent exposure to the US investment-grade bond market. Note that the fund employs a careful optimization strategy, holding just a fraction of the names in its index, a near-necessity among bond-market ETFs.