BUZZ-Tesco: cleaning house
** Tesco CEO change and profit warnings likely to send stock to top of most actively traded stocks on the FTSE. .
** The profit warning not a particular surprise after latest Kantar survey said Tesco (Xetra: 852647 - news) along with WM Morrison continued to lose sales & market share.
** 12 analysts cut estimates for this year's earnings over past two months.
** Eyes on profit margins as discount supermarkets have brought on price wars. http://bit.ly/1wP9pbf
** Second senior exec appointment at Tesco in two weeks.
(RM (LSE: RM.L - news) : vikram.subhedar.thomsonreuters.com@reuters.net)