E-business software company MicroStrategy (MSTR) - Get MicroStrategy Incorporated Class A Report shot up 85.5% by midday after the company published a letter to shareholders asking for their help in fighting off short-sellers. MicroStrategy acknowledged that it has been hurt by the slump in tech stocks, but maintained that it has unduly suffered by pressure from shorts. The company asked shareholders to contact their brokers and ask that their shares be removed from accounts accessible to short sellers.

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