NEW YORK — Stocks that moved substantially or traded heavily Monday:
Nektar Therapeutics, down $37.78 to $52.57
Investors weren't impressed with early results from a study of a pancreatic cancer treatment.
Facebook Inc., down 71 cents to $193.28
The New York Times reported that Facebook shared user data with dozens of device makers.
Micron Technology Inc., up 36 cents to $59.10
The chipmaker said it is one of several companies being investigated by Chinese authorities.
Merck & Co., up $1.46 to $62.02
The drugmaker announced positive results from studies of lung cancer treatments.
Winnebago Industries Inc., up 80 cents to $36.80
The RV and motor home maker said it will bought boat builder Chris-Craft.
Owens & Minor Inc., down 32 cents to $16.12
The medical supply distributor said its chief financial officer and head of North American business are leaving to pursue other opportunities.
PDC Energy Inc., down $1.21 to $60.14
Smaller and more U.S.-focused companies fared worse than other sectors Monday after strong performance recently.
TJX Cos., up $2.53 to $92.95
Retailers made bigger gains than the rest of the market Monday.