** Shares of CK Hutchison 0001.HK rise 3.7% to HK$70.5, their highest level since February 2020
** Stock is top pct gainer in the Hang Seng Composite Index on conglomerates .HSCIC, which rises 2.03%
** Vodafone VOD.L agrees to buy its partner CK Hutchison's stake in VodafoneThree for 4.3 billion pounds ($5.8 billion), taking full ownership of Britain's biggest mobile operator a year after it was created
** CK Hutchison says the deal would allow it to monetise its investment at an attractive valuation and generate substantial cash proceeds for the group
** The deal is subject to UK National Security and Investment Act approval
** UBS, with "buy" rating on the stock, estimates net gearing of CK Hutchison could improve to 9.9% from 16.5% as of December 2025 if the transaction completes with the disposal gain expected to be reflected in the underlying profit
** YTD, stock up 32.6%, Hang Seng Index .HSI up 1.6%
(Reporting by Donny Kwok)
((donny.kwok@thomsonreuters.com))