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Abiomed stock falls 31 percent after the Danvers company says it’s under federal investigation

Shares of Abiomed Inc. plunged by nearly one-third on the Nasdaq stock exchange Thursday after the Danvers company said it is the subject of a federal investigation.

In documents filed with the Securities and Exchange Commission, the cardiac device maker disclosed it has received a subpoena from the US attorney’s office seeking files related to the labeling and marketing of its Impella 2.5 heart pump.

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“We are in the process of responding to the subpoena and intend to cooperate fully,” Abiomed said in the filing.

Abiomed’s shares closed Thursday at $13.61, down $6.21, or 31.33 percent, on the Nasdaq.

Robert Weisman can be reached at
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