** Hong Kong-listed shares of Yancoal Australia 3668.HK jump...

** Hong Kong-listed shares of Yancoal Australia 3668.HK jump 10.4% to HK$34.90, their highest since March 7, and on course for a second consecutive session of gain

** Stock set for its biggest daily pct rise since April 28, if gains hold

** Stock is tracking a 7.6% surge in co's Australia-listed shares (YAL) on hopes of higher buyout bid from parent

** Yankuang Energy 1171.HK says H-share convertible bonds to be offered in the deal would provide Yancoal shareholders with additional flexibility and co looks forward to continuing its talks with Yancoal independent board committee

** Yankuang 600188.SS said on Tuesday it was open to further negotiations to acquire the remaining shares in majority-owned unit Yancoal Australia (YAL) after the Australian coal firm said it won't support the proposed $1.8 bln deal

** Yankuang Energy's Hong Kong shares jump 4.8% while those in Shanghai 600188.SS surge 3%

** The Hang Seng Composite Index tracking energy stocks .HSCIE gains 1.4%, while the Hang Seng Composite Index .HSCI and the Hang Seng Index .HSI both rise 1.7%