NEW YORK - The following stocks were among those that moved substantially or traded heavily Wednesday on the New York Stock Exchange and Nasdaq Stock Market:

NYSE:

McDonald's Corp., down $1.13 at $55.09

Sales at established restaurants grew the smallest amount since February at the world's largest fast-food chain.

Capital One Financial Corp., up $2.03 at $37.47

A Citigroup analyst upgraded the credit card issuer, saying credit losses should improve as the worst of its charge-offs are over.

Barrick Gold Corp., down $2.35 at $36.95

The world's biggest gold producer said it would increase the share offering announced Tuesday by $500 million to $3.5 billion.

K12 Inc., down $2.47 at $16.53

A disappointing 2010 revenue guidance made the educational services provider the biggest decline on the NYSE by percentage.

NASDAQ:

Popular Inc., down 10 cents at $2.25

B. Riley downgraded the Puerto Rico banking company after a recent stock surge due to securities swaps that bolstered common equity.

Apple Inc., down $1.79 at $171.14

After a nearly six-month absence, the technology company's CEO, Steve Jobs, returned to the public stage at a product launch event.

Vivus Inc., up $4.89 at $11.80

Shares hit a 52-week high after the drugmaker said its obesity drug candidate met key weight loss goals in two late-stage studies.

EBay Inc., up 85 cents at $22.68

A proposed Skype sale and improvements in the online marketplace's core business drove a Sanford Bernstein upgrade to "Outperform."

A service of YellowBrix, Inc.