April 23 (Bloomberg) -- Credit Suisse Group AG, the biggest Swiss bank by market value, returned to profit in the first quarter, helped by a recovery at its securities unit. Net income was 2 billion Swiss francs ($1.7 billion), compared with a 2.15 billion-franc loss in the year-earlier period, the Zurich-based bank said in a statement today. Earnings were twice the 1 billion-franc median estimate of 14 analysts surveyed by Bloomberg News. http://www.bloomberg.com/apps/news?pid=20601087&sid=areeaZ2I5N58&refer=home I hope they will not announce in two weeks time some sort of CDO trader forgot to mark down some toxic waste...