Over the last four years, successive Ministers of Finance have mooted the idea to have large, successful state agencies list on the TTSE. These entities include, but are not limited to Petrotrin, Hilton Trinidad and the Unit Trust Corporation. There have also been calls to have NEL divested into its individual entities and have these entities listed separately. In addition, suggestions have been made for large multinationals operating in Trinidad and Tobago to list Depository receipt to allow wider national participation in these companies. Such companies include British Petroleum (Trinidad and Tobago Ltd), Mittal Steel and Repsol (Trinidad and Tobago Ltd). As a result of the sale of RBTT Holdings to the Royal Bank of Canada in a cash and share deal in the late 2000s, a significant number of RBC shares are held by former shareholders of RBTT Holdings, which, at the time of its delisting, was one of the widest held shares on the TTSE.