• Wall Street retreated this morning after a four-week rally amid concern about the banking sector and after IBM's attempt to buy Sun unraveled. [WSJ, CNN]
• The latest Washington official facing questions about potential conflicts of interest: Larry Summers, who collected $5.2 million in 2008 working one day a week for D.E. Shaw before joining the administration. [NYT]
• Tim Geithner says that the Obama administration is prepared to oust top financial executives if their firms require more public aid. [FT, DB]

• Federal bank regulators plan to meet this week to discuss the results of stress tests being conducted on the country's 19 largest banks. [WSJ]
• More on the recent rough stretch for Apollo's Leon Black. [BN]
• Ex-Lehman chief Dick Fuld has a new job, apparently. [WSJ]
• One way to cut expenses: UBS has issued a "worldwide travel ban" for advisors in the company's wealth management division. [NYP]
• Vikram Pandit won't throw out the first pitch at Citi Field when the Mets play their first game there on April 13. In fact, he won't even be at the game. [NYT]