Columbia Short Duration Bond 

This exchange-traded fund principally invests its assets in fixed-income and debt instruments tracked by its benchmark index. It can also acquire "to-be-announced" (TBA) securities, provided its investment advisor determines their economic profiles closely match those of the index's components. The underlying index is owned and computed by Bloomberg Index Services Limited, an organization independent of both the fund and Columbia Management. Furthermore, this fund is categorized as non-diversified.