keywords: wpp wppgy grey hellman bid
text: WPP, Hellman each bid \$900/shr for Grey - reports LONDON (CBS.MW) -- UK advertising group WPP (WPPGY) (UK:WPP) offered \$1.25 billion for New York ad firm Grey Global (GREY) in a cash and share deal valued at more than \$900 a share, the Wall Street Journal reported.