It's a frustration for investors of all sizes, including CalSTRS. "In 2018 we should have enough technology that would make (end-to-end vote confirmation) feasible," Ms. Mastagni said. The biggest player in the world of proxy voting infrastructure, Lake Success, N.Y.-based Broadridge Financial Solutions Inc., has been offering end-to-end confirmation for about 10 years, said Lyell Dampeer, president of Broadridge's investor communication solutions U.S., which handles the firm's regulatory communication services and its issuer and transfer agency services. But Broadridge can only offer voter confirmation when it acts as tabulator for a given annual shareholders' meeting. In instances when Broadridge does not act as tabulator, confirmation would still be possible if the tabulator communicated with all other service providers, Mr. Dampeer said. "The information is available today to do end-to-end confirmations," he added.