Tidjane Thiam an executive director, sitting on the plc board. In January 2007, after Richard Harvey announced he would step down as chief executive of Aviva, Thiam was tipped as a possible future head of the group. Thiam left Aviva in September 2007 to become chief financial officer of Prudential plc. In March 2009, Thiam was named chief executive, effective from October, after Mark Tucker chose to step down. The appointment made him the first African to lead a FTSE 100 listed company. His departure from the role was announced on 10 March 2015. After he became chief executive, Prudential launched a
FTSE All-Share Index FTSE All-Share Index The FTSE All-Share Index, originally known as the FTSE Actuaries All Share Index, is a capitalisation-weighted index, comprising around 600 of more than 2,000 companies traded on the London Stock Exchange. As at 29 December 2017 the constituents of this index totalled 641 companies (source FTSE Russell All-Share Index fact sheet). It aims to represent at least 98% of the full capital value of all UK companies that qualify as eligible for inclusion. The index base date is 10 April 1962 with a base level of 100. To qualify, companies must have a full listing on the