Billionaire investor Carl Icahn gave mixed signals on Wednesday about AOL veteran Jonathan Miller or anyone else acquiring Yahoo Inc. Icahn, who is a Yahoo board member, said in an interview on the CNBC business channel that he would oppose selling just more than half of the Sunnyvale Web portal because he insisted that its shares are undervalued. He speculated that Yahoo's board would agree with him. But Icahn added that management would consider a bid for the entire company if the offer was high enough.

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