OTP Bank Signs Deal to Acquire Luminor Bank, Expanding Presence Across the Baltic Region Hungary-based OTP Bank has entered into an agreement to acquire 100% of Luminor Holding, the parent company of Luminor Bank, from a consortium of private equity funds managed by Blackstone along with DNB Bank. The proposed acquisition, which remains subject to regulatory approval, represents one of OTP Bank's most significant expansion moves and marks its entry into the Baltic banking market.