RadioShack Jumps as Much as 33% After Call Options Trade

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RadioShack Corp., the struggling electronics retailer, jumped as much as 33 percent after a trader spent more than $600,000 buying bullish options.

About 20,000 calls expiring in October with a strike price of $1.50 were purchased at 10:25 a.m., according to Trade Alert LLC. The stock then surged, reaching $1.75 a share in the biggest intraday advance since at least 1980. The shares finished up 9.9 percent at $1.45.