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Yahoo's (YHOO) chief executive and founder Jerry Yang has announced his resignation yesterday, telling the company he will stay as long as a successor is found. Yang's departure has renewed interest in the possibility of a fresh bid from Microsoft (MSFT), and not everyone sees this as good news. Short interest in the company has risen from a very low base; 0.5% to 1.35% of shares outstanding on loan in the last fortnight. Utilisation, or the percentage of available supply, has also risen from 3.3% to 6.1% in the same time frame. Please find below the graphs documenting Yahoo's percentage of shares outstanding on loan for the last three months.

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Yahoo!

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