Matt Taibbi, post Facebook IPO:

Wall Street is increasingly turning into a giant favor-and-front-running factory, where the big banks and broker-dealers that channel vast streams of crucial non-public information (about the markets generally and their clients specifically) are also trading for their own accounts, and sharing information with a select group of “preferred investors,” who in turn help the TBTF banks move markets in this or that desired direction by jumping on or off various pigpiles at the right times.

Sooner or later, people are going to clue into the fact that one or two big banks, acting in concert with a choice assortment of unscrupulous “preferred investors,” can at least temporarily prop up or topple just about anything they want, from Greece to Bear Stearns to Lehman Brothers. And if you can move markets and bet on them at the same time, it’s impossible to not make tons of money, which incidentally is made at everyone else’s expense. So we should always be on the lookout for any evidence that that sort of coordinated, non-disclosed activity is taking place.