Easy come, easy go. Shares of Globalstar (NASDAQ: GSAT) stock, the satellite communications company that's helping Apple (NASDAQ: AAPL) offer emergency SOS text service to its customers in cellphone dead zones, surged 5% on Tuesday after Clear Street brokerage raised its price target to $71.

On Wednesday, however, the stock gave back all those gains and more, closing the day down 9.6%. Why?

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Source Fool.com