DEFINITION of 'Lehman Brothers Government/Corporate Bond Index'

An unmanaged market-weighted index, comprised of government and investment grade corporate debt instruments with maturities of one year or greater. The Lehman Brothers Government/Corporate Bond Index is a total return benchmark index for many bond funds.

BREAKING DOWN 'Lehman Brothers Government/Corporate Bond Index'

The Government/Corporate Bond Index is a subset of the Lehman Aggregate Bond Index. Lehman determines if a bond is investment grade by its listed credit rating by Moody's. Investment grade bonds have a rating of Baa or higher on the Moody's scale. If the bond is unrated by Moody's, an S&P rating of BBB or higher will suffice. The index's measures performance by total return, which includes the capital appreciation or depreciation of the bond, combined with its coupon income as a percentage of the original investment.

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