Have Rating Agencies Become More Conservative? Implications for Capital Structure and Debt Pricing
Stockholm School of Economics
London Business School; Centre for Economic Policy Research (CEPR)
London School of Economics & Political Science (LSE)
February 5, 2013
We show that rating agencies have become more conservative in assigning credit ratings to corporations over the period 1985 to 2009. Holding firm characteristics constant, average ratings have dropped by three notches (e.g., from A to BBB ) over time. Consistent with the view that this change has not been fully warranted, we find that defaults for both investment grade and non-investment grade firms have declined over time. The increased stringency has also affected capital structure, growth, and debt spreads. Firms that suffer more from this conservatism issue less debt and have lower leverage; they are also less likely to obtain a debt rating and they experience lower sales growth. However, their debt spreads are lower compared to the spreads of firms with the same rating that have not suffered from this conservatism, which implies that the market partly undoes the impact of conservatism on debt prices. This evidence suggests that firms and capital markets do not perceive the increase in conservatism to be fully warranted.
Number of Pages in PDF File: 59
Keywords: credit ratings, capital structure, debt issues, debt spreads
JEL Classification: G32working papers series
Date posted: June 12, 2011 ; Last revised: February 21, 2013
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