** Shares of Deutsche Pfandbriefbank PBBG.DE (PBB) drop around 8% after it withdrew its full-year guidance and warned of extraordinary expenses from discontinuing its business in the U.S.
** Winding down the company's U.S. portfolio amounting to around 4.1 billion euros ($4.72 billion) may lead to an annual loss in 2025, PBB said
** "Withdrawal from the U.S. market is not a complete surprise," AlphaValue says
** If losses hold, PBB's shares will see their worst day since February
($1 = 0.8694 euros)
(Reporting by Maria Rugamer)
((Maria.Rugamer@thomsonreuters.com))