The second lawsuit, filed in January of 2007 against 12 Wall Street prime brokerages, claims a massive, illegal stock market manipulation scheme based on naked short selling: brokers lending shares they don't posses to short sellers with no intention of covering their illegal short positions to begin with; resulting in a dangerous build-up of persistent delivery failures. Economists agree that this sort of strategic failure to deliver is commonplace, targeted, responsible for depressing target companies' share prices, and potentially destabilizing to America's financial system.