** U.S.-listed shares of search engine giant Baidu BIDU.O up 2.4% at $91.50 premarket

** Reports Q1 rev of 32.45 billion yuan ($4.50 billion), beating analysts' avg est of 30.9 billion yuan, according to data compiled by LSEG

** "AI Cloud continued its robust growth in the first quarter, which provides solid support to our overall revenue," interim CFO Junjie He says

** As of last close, stock up ~6% this year

($1 = 7.2050 Chinese yuan renminbi)

(Reporting by Jaspreet Singh in Bengaluru)

((Jaspreet.Singh@thomsonreuters.com ; https://twitter.com/i_jass))