** CK Hutchison 0001.HK rises 3.8% to HK$41.3, highest since April 7
** Stock set for biggest one-day pct gain since March 24; top pct gainer on index tracking conglomerates .HSCIC
** Italian billionaire Gianluigi Aponte's family-run business emerging as lead investor of a group seeking to buy 43 ports from CK Hutchison, Bloomberg News reports, citing people familiar with the matter
** CK Hutchison declined to comment
** YTD, stock up 0.7%
(Reporting by Donny Kwok)
((donny.kwok@thomsonreuters.com))