Yahoo has been stumbling from one bad new to another recently which has had its effect on its share, Microsoft once offered $33 per Yahoo share, the share was trading at less than $9 a dollar recently.

A few 'positive news' recently seem to be helping Yahoo shares rise again, first the CEO announce he will be stepping down and billionaire activist investor Carl Icahn disclosed that he has increased his stake in Yahoo, by purchsing 6.8 million Yahoo shares over three days this week, paying around $67 million. His stake in the internet company now stand at 5.4 percent.

Earlier this year, in a bid to get Yahoo to accept Microsoft bid for the company, Icahn threatened to launch a proxy fight against Yahoo and oust Chief Executive Jerry Yang.