KB Home, Biogen, Macerich, Tiffany and AK Steel are big market movers

NEW YORK, N.Y. – Stocks that moved substantially or traded heavily Friday on the New York Stock Exchange and the Nasdaq Stock Market:


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.