** Shares of asset manager ICG ICGIN.L up 7.9% at 2040p, top gainers across London stocks
** ICG's first-half PBT surges 77.7% to 352 million pounds ($463.62 million), while AUM up 14% at 124 billion pounds for the six-month period ended September 30
** European asset manager Amundi AMUN.PA to take a 9.9% stake in ICG for an undisclosed amount
** Based on ICG's market capitalisation on Monday, the stake would be worth around 550 million pounds and make Amundi the British company's largest shareholder
** YTD, stock had fallen 8.57%
($1 = 0.7592 pounds)
(Reporting by Tuhina in Bengaluru)
((Tuhina@thomsonreuters.com))