Alamos Gold, Builders FirstSource, JetBlue, Arrowhead and Qualcomm are big market movers

Stocks that moved substantially or traded heavily Monday on the New York Stock Exchange and the Nasdaq Stock Market:


Alamos Gold Inc. (AGI), up 39 cents to $6.28

The Canadian gold mining company is merging with fellow gold mining company AuRico Gold Inc. in a deal worth about $1.5 billion.

Basic Energy Services Inc. (BAS), down 65 cents to $7.67

The energy industry services company said its rig count remained unchanged and it continues facing fierce rate competition.

Perrigo Co. (PRGO), up $3.33 to $201.88

Mylan said it filed notice of its proposed buyout with antitrust regulators as it awaits a response from the generic drug company.


Builders FirstSource Inc. (BLDR), up $4.67 to $11.57

The building materials supplier will buy fellow buildings material supplier ProBuild Holdings LLC for about $1.63 billion in cash.

Sears Holdings Corp. (SHLD), up 31 cents to $43.24

The retailer entered a deal with mall operator Simon Property Group aimed at extracting value from its real estate holdings.

JetBlue Airways Corp. (JBLU), up 81 cents to $19.85

The airline reported a 9.2 percent boost in March passenger traffic compared with a year ago and a 6.2 percent boost in capacity.

Arrowhead Research Corp. (ARWR), up 9 cents to $8.00

The Food and Drug Administration cleared the drug developer for midstage development of a potential hepatitis B treatment.

Qualcomm Inc. (QCOM), down 43 cents to $68.73

The chipmaker is being urged to break up by Jana Partners LLC in order to boost the stock, according to the Wall Street Journal.