Shares of the following companies are showing unusual moves in Tuesday's trading session .Among the winners, Edwards Lifesciences rose after the company revealed a study showing that its Sapien transcatheter heart valve produced improved outcomes for 822 patients with restricted aortic valves, or aortic stenosis.To the downside, shares of Gentex plunged as the auto-part supplier reported weaker-than-expected fourth-quarter earnings and cautioned about slowing production in Europe and China.
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