"It was the one meaningful financing event that they didn't have access to, " says William Brady of Credit Suisse First Boston.

FORBES: Second helpings

In its other pro-business ruling this week, the court decided on Monday that Credit Suisse and other investment banks weren't guilty of setting stock prices during the dot-com bubble, as some investors had alleged.

FORBES: Magazine Article

Still, Credit Suisse analyst Michael Exstein believes the Penney rally won't continue.

FORBES: Merely Cosmetic

"This doesn't look like we're entering some kind of downward spiral, " said Jonathan Basile, an economist at Credit Suisse.

NPR: Orders For US Durable Goods Fall 5.7 Pct. In March