Piraeus Bank is trading at €10.62, up 4.27%, as Greek banking shares rallied. - Greek banking sector stocks gained about 4%, while the Athens General Composite advanced 1.75% on October 6. - UBS raised its Piraeus target to €12.50 from €12.00 and maintained a Buy rating; reports do not explicitly establish the upgrade caused the daily move. - No clear Piraeus company announcement explaining the move was identified.