Yahoo Co-founder David Filo Is $75 Million Richer Today

The biggest beneficiary of Yahoo's plan to boost shareholder value by spinning off its stake in Alibaba is the Internet company's co-founder and Chief Yahoo David Filo. Based on his holdings -- 70,761,390 shares, or 7.5% of the shares outstanding, according to FactSet data -- and with the stock up $1.06, or 2.2% in morning trade Wednesday, Filo is $75 million richer today than he was yesterday. Yahoo chief executive officer Marissa Mayer's 2,259,081 shares -- she is the 64th largest shareholder -- are worth $2.4 million more today.