credit suisse group ag shares rose again on friday after it said it will buy back up to 3 billion swiss francs 303 billion of its own debt in an effort to bolster investor confidence after a turbulent week for the lender shares at 1010 gmt were up 76 at chf454 having risen 14 in the last week the zurichbased bank said earlier friday it would repurchase dollardenominated bonds it issued for up to a total 2 billion and offer to buy back euro and poundsterling bonds for a total of up to 1 billion euros 9792 million the company said the offers which expire on nov 10 and nov 3 respectively allow it to take advantage of market conditions to repurchase debt at attractive prices credit suisses bond spreads have widened over concerns about the health of the bank and the tender offer will likely provide support ing analyst suvi platerink kosonen said in a note the companys share price has fallen nearly 50 in the year to date and online rumours about the lender led creditdefault swapsan insurance of the company defaultingto reach highs on monday any support to credit suisses spreads and its share price should give some breathing space until the bank unveils its longawaited strategic update along with its thirdquarter earnings on oct 27 ms kosonen added