The global banking sector has been rocked since the sudden collapse this month of two U.S. regional banks sparked fears of contagion to other lenders. Separate sources told Reuters that UBS has promised retention packages to Credit Suisse wealth management staff in Asia to stem a talent exodus. Credit Suisse and UBS declined to comment, while the Justice Department did not immediately respond to Reuters' emailed requests for comment. The takeover of Credit Suisse has also ignited broader concerns about investors' exposure to a fragile banking sector. Standard Chartered (STAN.L) Chief Executive Bill Winters said on Friday the wipeout had "profound" implications for global bank regulations.

---