The identity of any owner of, or any other information by or from which may be determined the identity of any owner of, any public obligation issued by any issuer shall be treated as confidential and not open to public inspection. The confidentiality herein established shall not be deemed to have been extinguished but shall remain inviolate in cases where such information is in the possession of banks, trust companies, financial institutions or other financial intermediaries of the issuer, including, but not limited to, registration, paying or transfer agents.