Can a top-rated company borrow more cheaply than the government?
Core argument: Two Microsoft bonds rated AAA trade at yields slightly below equivalent Treasurys, a negative spread that is unusual because companies are in principle more likely to default than a government that can tax.
Two pristine-rated bonds from Microsoft trade at lower yields than equivalent Treasurys. Among U.S. corporate bonds rated AAA, two in the main index currently trade a little below the equivalent yield on Treasurys, known as a negative spread. This is extremely unusual, both because companies are in principle much more likely to default than the government that can tax them, and because the corporate bonds are harder to trade, so should yield a little more to compensate buyers for the difficulty in selling them quickly. Yet, demand for high-quality corporate bonds has been so great that it’s driven the ICE B of A AAA U.S. Corporate index to a spread of only 0.3 percentage point over Treasurys, a tiny reward for the additional risks of holding company debt and far below the 2-plus points reached in the past two recessions. It’s small enough that some of the best bonds get pushed to yield less than the government.


