Stocks that moved substantially or traded heavily Friday on the New York Stock Exchange and the Nasdaq Stock Market:
Continue Reading Below
KB Home, up $1.18 cents to $15.26
The homebuilder reported better-than-expected first-quarter profit and revenue on a boost in home sales and prices.
The Macerich Co., down $4.29 to $89.21
Fellow mall operator Simon Property boosted its hostile bid for the company, saying it was making its best and final offer.
AK Steel Holding Corp., down 15 cents to $4.05
The steel company forecast a first-quarter loss because of an increase in imports and lower-than-expected shipments and prices.
Tiffany & Co., down $3.44 and $82.93
The luxury jeweler reported better-than-expected fourth-quarter profit, but its revenue and outlook fell short of expectations.
Biogen Idec Inc., up $42.33 to $475.98
The biotechnology company released positive study data for its developing Alzheimer's disease treatment.
Prothena Corp., up $9.43 to $38.66
The biotechnology company said its potential Parkinson's disease treatment showed promising results in an early-stage study.
Theravance Inc., down 94 cents to $17.03
An FDA panel of experts recommended that the Breo Ellipta inhaler for asthma appears safe for adults, but not for adolescents.
Star Bulk Carriers Corp., up 4 cents to $3.30
The shipping company reported a fourth-quarter loss, but the earnings met Wall Street expectations and revenue beat forecasts.