BIL`s take on ultra-short-term Treasurys is entirely valid even if it doesn`t conform to our view of the space. The fund invests in Treasury bills with three months or less to maturity, in contrast with our benchmark that covers Treasurys with 1-12 months remaining to maturity. As such, BIL takes on less interest rate risk and offers lower yields. Safety has a price: In a low-interest rate environment, costs for this cashlike vehicle may exceed the yield. Retail investors should carefully consider all options available in this space.