Acorda and GrafTech are big market movers

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

NYSE

GrafTech International Ltd., down $2.23 to $4.96

The graphite and carbon materials company reduced its 2014 financial outlook and it announced several management changes.

Green Dot Corp., up $4.59 to $23.41

Wal-Mart Stores Inc. is offering mobile checking accounts for its customers through the banking and financial products company.

Valeant Pharmaceuticals International Inc., up $8.05 to $124

The drug and medical device maker notified its takeover target Allergan that it expects its financial results to top forecasts.

KB Home, down 90 cents to $16.07

The homebuilder reported worse-than-expected third-quarter profit and revenue, along with a downturn in home deliveries.

Nasdaq

Bed Bath & Beyond Inc., up $4.64 to $67.33

The home goods retailer reported earnings and revenue results for its latest quarter that beat Wall Street expectations.

Acorda Therapeutics Inc., up $8.27 to $37.62

The biotechnology company said it will buy Civitas Therapeutics for $525 million, gaining a potential Parkinson's disease drug.

Merrimack Pharmaceuticals Inc., up 14 cents to $7.33

The biotechnology company signed a licensing deal with Baxter International for its potential pancreatic cancer treatment.

SolarCity Corp., up $2.64 to $63.04

The solar energy systems company hopes to raise up to $500 million in a debt offering involving convertible senior notes.