Vanguard has filed a registration statement with the Securities and Exchange Commission for seven new bond index funds. Each will have a corresponding exchange-traded funds share class, according to the Valley Forge, Pa.-based firm.

The new offerings will bring the total number of Vanguard bond index funds to 12. The funds will come with expected expense ratios of 0.15%; institutional shares will charge about 0.09% annually.

The funds are expected to be available late this year, according to a company statement.

Vanguard came out with what it bills as the industry’s first no-load bond index fund, the Vanguard Total Bond Market Index Fund (VBMFX), in 1986. It followed with three additional bond index funds in 1994, and launched bond ETFs in 2007.

“Financial advisors and institutions want to construct broadly diversified fixed income portfolios, while retaining the ability to emphasize particular sectors or durations," said Bill McNabb, Vanguard's chief executive, in the statement.

The new funds are: