8. Abiomed (Nasdaq:ABMD): +66.3%
Abiomed touts its Impella heart pumps as the world’s smallest – with more than 60,000 patients treated so far. The Impella device is meant to help restore blood flow and allow the heart to rest after a heart attack, according to the Danvers, Mass.–based company. The company in October announced that its fiscal second-quarter profits nearly tripled. Abiomed crushed analysts’ consensus earnings forecast for the quarter and saw a 29% sales increase.
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