NEW YORK -- Stocks that traded heavily or had substantial price changes Monday:

       3M Co., down $4.55 to $97.98.

       The maker of office supplies, adhesives and medical products is reportedly close to settling a water pollution lawsuit in Florida.

       Palo Alto Networks Inc., up $9.55 to $226.79.

       The security software maker is replacing Dish Network in the S &P 500.

       C.H. Robinson Worldwide Inc., down $6.27 to $91.40.

       The trucking company is reportedly naming a Ford executive as its next CEO.

       Circor International Inc., up $16.17 to $47.84.

       Investment firm KKR is buying the maker of valves and other engineered products.

       Amedisys Inc., up $12.27 to $91.74.

       Optum is offering to buy the home health care and hospice services provider.

       ImmunoGen Inc., up $1 to $15.37.

       The drug developer gave investors an encouraging update on a potential ovarian cancer treatment.

       Science Applications International Corp., up $1.20 to $102.65.

       The information technology company raised its profit forecast for the year.

       Epam Systems Inc., down $56.41 to $203.24

       The information technology services provider cut its profit forecast for the year.