BERLIN (dpa-AFX) - Investment firm MBB has increased its share buyback program and extended its duration. Citing the "attractive valuation" of MBB shares, the SDax-listed group announced in Berlin on Monday that the maximum buyback volume will be raised to 25 million euros. This represents an increase of three million euros over the previous limit, leaving more than 6.5 million euros available for further repurchases. Additionally, the program's term has been extended until May 22, 2026, having originally been set to expire on April 14. The stock extended its gains following the announcement, trading up by more than three percent in initial reaction./jha/he