Stocks that moved substantially or traded heavily Monday on the New York Stock Exchange and Nasdaq Stock Market:
Chesapeake Energy Corp., down 76 cents at $19.19
A Citi analyst downgraded the natural gas producer's stock saying that a drop in natural gas prices will cut into its value.
Procter & Gamble Co., up 97 cents at $66.78
The maker of Crest toothpaste and Gillette razors said that it is raising its quarterly dividend by 7 percent to 56.2 cents.
Mattel Inc., down $3.12 at $31.01
The toy maker's first-quarter profit fell 53 percent on costs tied to an acquisition and lower sales for Barbie and Hot Wheels.
Endocyte Inc., up $3.82 at $7.62
The biopharmaceutical company said it could get more than $1 billion if a cancer drug developed with Merck & Co. is successful.
Halozyme Therapeutics Inc., down $2.72 at $8.56
The drug company and Baxter International Inc. said that regulators will take more time to review their immune disease drug.
Merit Medical Systems Inc., up 35 cents at $11.95
A Raymond James analyst upgraded the medical device maker, saying that its new lineup of products should drive revenue growth.
Edelman Financial Group Inc., up $2.56 at $8.74
The Houston-based wealth management firm is being taken private by affiliates of Lee Equity Partners LLC for about $257.5 million.
Ivanhoe Energy Inc., down 8 cents at 89 cents
The government of Mongolia asked for a suspension in activities at SouthGobi Resources, a coal mining company it partially owns.