Stocks that moved substantially or traded heavily Monday on the New York Stock Exchange and the Nasdaq Stock Market:
Continue Reading Below
Humana Inc. (HUM), up $1.46 to $188.96
The health insurer provided a lower-than-expected second-quarter profit outlook as it moves ahead with its buyout of Aetna Inc.
Weight Watchers International Inc. (WTW), up 33 cents to $4.42
The weight loss and management company is potential buyout target of an activist hedge fund, according to a New York Post report.
National Bank of Greece S.A. (NBG), down 14 cents to 99 cents
The bank's shares fell as Greek voters rejected European creditors' bailout terms and the nation's finance minister resigned.
Allergan Inc. (AGN), down 81 cents to $306.70
The pharmaceutical company is buying medical device maker Oculeve for $125 million in cash and future milestone payments.
Catabasis Pharmaceuticals Inc. (CATB), up $1.24 to $13.64
The drug developer's potential muscular dystrophy treatment was cleared by the FDA for accelerated development and review.
Versartis Inc. (VSAR), up $4.30 to $18.92
The biotechnology company will proceed with clinical development of a potential long-acting growth hormone deficiency treatment.
Horsehead Holding Corp. (ZINC), down $1.91 to $9.54
The zinc and nickel-based products company reported a slide in zinc metal production in June, partly because of equipment issues.
Allot Communications Ltd. (ALLT), down $1.08 to $6.00
The internet protocol services company reported disappointing preliminary second-quarter financial results, citing lower bookings.