** Shares of BP BP.L up 5.6% at 457p - top gainer on FTSE
100 index .FTSE
** Activist investor Elliott Investment Management has built
a stake in the oil major, a source familiar with the matter told
Reuters
** Size of the stake is unknown
** In a report from Saturday, Bloomberg News called
Elliott's stake in the company "significant"
** Elliott is seeking to boost shareholder value by urging
BP to consider transformative measures, Bloomberg News reported
** BP gains ~16% YTD
(Reporting by Yamini Kalia in Bengaluru)
((Yamini.Kalia@thomsonreuters.com;))