As one of a handful of funds tracking what is essentially the same index, BND delivers a massive portfolio at a low cost. BND has one of the broadest basket of bondsover 10,000 issues. Managing such a large portfolio can be challenging, and for BND it's led to tracking volatility. The fund fits our benchmark almost perfectly with some trivial differences in coverage. BND represents a solid choice for broad US investment-grade fixed-income coverage.