Herbalife and Tesla are big market movers

Tesla, Herbalife, Navistar, Cracker Barrel and CalAmp are big market movers

Associated Press

NEW YORK (AP) -- Stocks that moved substantially or traded heavily Tuesday on the New York Stock Exchange and the Nasdaq Stock Market:

NYSE

Navistar International Corp., up $1.21 to $37.55

The Pentagon awarded the truck and engine maker a contract modification worth nearly $7 million in a field service support role.

Puma Biotechnology Inc., up $7.43 to $110.10

The biotech company released an update on its experimental breast cancer drug, which Cowen & Co. analysts called "encouraging."

Herbalife Ltd., down $2.26 to $78.55

Investor Bill Ackman fired off a seven-page letter reiterating claims that the nutritional supplement company is a pyramid scheme.

Nasdaq

Westmoreland Coal Co., up $1.75 at $17.37

The Colorado company is buying Canadian coal mining operations for $435 million, which could help it double its current coal production.

Supernus Pharmaceuticals Inc., up 98 cents to $8.38

Regulators approved the pulmonary arterial hypertension treatment that the drug maker helped develop with United Therapeutics.

CalAmp Corp., down $1.93 to $25.63

The wireless communications company issued a financial outlook that fell well short of what Wall Street had expected.

Tesla Motors Inc., up $7.86 to $151.41

The electric car company said that federal regulators reaffirmed the five-star safety rating of its 2014 Model S sedan.

Cracker Barrel Old Country Store Inc., up $1.99 to $112.38

The restaurant chain's largest shareholder is pushing the company to consider selling itself and may make a bid.

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