The benchmark index doesn't reflect the true allocations of U.S. bond investors, and the industry needs to look again at corporate-bond index funds or rework the current index, says Vanguard founder Jack Bogle.
Although the interest rate spread between corporates and Treasuries looks reasonable, because interest rates themselves are so low, corporate bond investors aren't being adequately compensated on an all-in basis, says Morningstar's Dave Sekera.
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