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

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

NYSE

Barracuda Networks Inc., down $7.87 to $15.58

The cloud-based security and storage services provider's fiscal second-quarter revenue fell short of expectations and it cut its guidance.

Ralph Lauren Corp., up $14.11 to $118.16

Ralph Lauren is handing off his title as CEO of the fashion and home decoration empire to the head of Gap's Old Navy chain.

Advance Auto Parts Inc., up $19 to $189.53

Activist investor Starboard Value said it has built a 3.7 percent stake in the auto parts retailer.

Rio Tinto PLC, up $1.17 to $33.82

The mining company is selling a 40 percent stake in an Australian coal mine as it faces slumping demand and lagging prices.

Chesapeake Energy Corp., up 54 cents to $7.33

The energy company is laying off about 740 employees, or 15 percent of its workforce, as it contends with low energy prices.

Twitter Inc., up $1.35 to $26.94

The technology news site Re/Code said co-founder Jack Dorsey could be named the short-messaging service's permanent CEO as early as Thursday morning.

Nasdaq

ComScore Inc., up $4.68 to $46.15

The media analysis company is buying Rentrak in an all-stock deal that will create a larger audience-ratings and analysis firm.

Diamond Foods Inc., down 48 cents to $30.86

The snack food maker reported better-than-expected fiscal fourth-quarter profit, but its revenue disappointed Wall Street.