State Street and Blackstone are the latest on Wall Street to examine their relationship with the gun industry. : State Street (STT), a top shareholder in gunmakers Sturm Ruger (RGR), American Outdoor Brands (AOBC) and Vista Outdoor (VSTO), wants to know how the companies "will support the safe and responsible use of their products." "We will be engaging with weapons manufacturers and distributors to seek greater transparency," spokesman Andrew Hopkins said in an email Monday. State Street also plans to watch the companies' lobbying efforts.