BUZZ-Diageo Plc: Best day in 7 years on bid reports

** Diageo (LSE: DGE.L - news) rises 7.2 pct, its best day since November 2008, on reports Brazilian billionaire and 3G Capital (Other OTC: CGHC - news) founder Jorge Paulo Lemann to bid for co

** Top riser on Stoxx 600, fourth most traded by average 30-day volumes

** However, U.S.-listed shares down 2.5 pct as analysts say deal unlikely

** "Press reports of a potential bid seem likely premature, possibly erroneous," Bernstein analysts write in a note on Monday

** "There are more arguments 'Against' a 3G acquisition of Diageo than arguments 'For'," Exane analysts wrote in a note, adding the report from Brazil's Veja newsweekly seemed a "a bit lightweight"

** "We do not see the spirits industry as ticking the M&A boxes for 3G and consider that 3G is more focused on consolidating within US food as well as on the potential leveraged buyout of Coca-Cola Co in the medium term," Nomura analysts wrote in a note

** Up to Friday's close, U.S. shares had fallen 8 pct in the past 12 months.