WebMd and Citigroup are big market movers

NEW YORK (AP) -- Stocks that moved substantially or traded heavily Monday on the New York Stock Exchange and the Nasdaq Stock Market:

NYSE

Edwards Lifesciences Corp., up $8.03 to $81

A court reaffirmed an earlier ruling that Medtronic's CoreValve system infringes on a patent held by the medical device maker.

Citigroup Inc., up $1.99 to $47.67

Profits topped Wall Street expectations as the bank distances itself from mortgages that soured during the housing downturn.

Goodrich Petroleum Corp., up $5.56 to $23.96

The independent driller completed its Blades 33H-1 well in Louisiana, which is producing more than 1,200 barrels of oil equivalent a day.

Aspen Insurance Holdings Ltd., up $4.40 to $43.77

A rarity in the re-insurance world, Endurance Specialty Holdings is offering to take over the company in a cash-and-stock deal.

Nasdaq

WebMD Health Corp., up $6.20 to $43.87

The health website operator said it expects to report strong first-quarter results at the end of April.

Twitter Inc., up 82 cents to $40.87

The company says its CEO Dick Costolo and co-founders Jack Dorsey and Evan Williams have no plans to sell any of their shares when its post-IPO lock-up expires on May 5.

PriceSmart Inc., up $1.63 to $94.35

Roth Capital Partners says a sell-off of shares in the warehouse club was overdone, and that the World Cup will drive business.

F5 Networks Inc., up $4.04 to $107.05

Stifel Nicolaus noted the rising number of million-dollar deals closed by the networking company, and issued an upgrade.