Economics: Berating the Security Raters

[A Senate subcommitte released Wall Street] email messages ... from employees at the credit rating agencies, which bestowed AAA ratings on hundreds of billions of dollars’ worth of dubious assets, nearly all of which have since turned out to be toxic waste. And no, that’s not hyperbole: of AAA-rated subprime-mortgage-backed securities issued in 2006, 93 percent--93 percent!--have now been downgraded to junk status.

What those e-mails reveal is a deeply corrupt system. And it’s a system that financial reform, as currently proposed, wouldn’t fix.

The rating agencies began as market researchers, selling assessments of corporate debt to people considering whether to buy that debt. Eventually, however, they morphed into something quite different: companies that were hired by the people selling debt to give that debt a seal of approval.

The Senate subcommittee has focused its investigations on the two biggest credit rating agencies, Moody’s and Standard & Poor’s; what it has found confirms our worst suspicions. In one e-mail message, an S.& P. employee explains that a meeting is necessary to “discuss adjusting criteria” for assessing housing-backed securities “because of the ongoing threat of losing deals.” Another message complains of having to use resources “to massage the sub-prime and alt-A numbers to preserve market share.”

Paul McCulley of Pimco, the bond investor (who coined the term “shadow banks” for the unregulated institutions at the heart of the crisis), recently described it this way: “explosive growth of shadow banking was about the invisible hand having a party, a non-regulated drinking party, with rating agencies handing out fake IDs.”

It’s comforting to pretend that the financial crisis was caused by nothing more than honest errors. But it wasn’t; it was, in large part, the result of a corrupt system. And the rating agencies were a big part of that corruption.

See Berating the Raters by Paul Krugman, April 25, 2010.