Citigroup (NYSE: C) announced $8-11 billion in write downs on its $55 billion exposure in U.S. subprime mortgages/CDOs.
C announced Charles Prince, Chairman and CEO has elected to retire from C. Sir Win Bischoff, will serve as acting CEO and Robert Rubin, will serve as Chairman of the Board.
C is recently trading at $37 in pre-open trading, below its close of $37.73.
Goldman Sachs lowered its 12-month price target to $48 from $51.
C November option implied volatility is at 72, December is at 51, above its 26-week average of 27 according to Track Data, suggesting larger price risks.
Daily options Update is provided by Stock Specialist Paul Foster of theflyonthewall.com.










