Claymore Managing Director William Belden has remarked upon plans to expand the product line further into the future.

iShares also offers maturity-date bond funds. Though, the iShares products are focused on municipal bonds, with maturity dates between 2012 and 2017, and they have an expense ratio of 0.30%. [First of Its Kind: Muni Bond ETFs With an End Date.]

For more information on corporate bonds, visit our corporate bonds category.

Max Chen contributed to this article.