** Medical diagnostics co Lantheus Holdings' shares up ~7.1% at $85.05
** LNTH announces a program to repurchase up to $250 mln of its common shares during the next 12 months
** The timing, number and dollar amount of repurchase transaction will be at management's discretion
** "We intend to commence repurchases in the fourth quarter of this year and opportunistically return capital to shareholders over the next twelve months," said CEO Brian Markison
** 11 of 12 brokerages rate the stock "buy" or higher, 1 "hold"; their median PT is $135 — data compiled by LSEG
** Including session's moves, stock up ~37% YTD
(Reporting by Prakhar Srivastava in Bengaluru)
((Prakhar.srivastava2@thomsonreuters.com))