Ocwen, Mattel, HCA Holdings, MeadWestvaco and Seagate Technology are big market movers

StocksAssociated Press

Stocks that moved substantially or traded heavily Monday on the New York Stock Exchange and the Nasdaq Stock Market:

NYSE

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Ocwen Financial Corp., up 56 cents to $6.91

The mortgage loan servicing company agreed to pay $2.5 million as part of a settlement with California over compliance issues.

HCA Holdings Inc., up $4.36 to $73

The stock of the health care facilities operator will replace Safeway Inc. in the S&P 500 market index after the close of trading on Monday.

MeadWestvaco Corp., up $6.31 to $51.35

The packaging company is merging with Rock-Tenn Co. to create a new $16 billion company, which will be named before the deal closes.

Brookdale Senior Living, down $2.79 to $33.92

The long-term care facility operator cut its guidance for 2015, citing weaker-than-expected results during its recent quarter.

Nasdaq

Mattel Inc., down $1.40 to $26.64

The toymaker's CEO, Bryan Stockton, resigned from the company, which reported worse-than-expected quarterly results.

Seagate Technology Plc., down $4.92 to $59.06

The electronic data storage products maker reported worse-than-expected fiscal second-quarter profit and revenue.

Rockwell Medical Inc., down 8 cents to $10.73

The Food and Drug Administration approved the biotechnology company's treatment for iron loss in chronic kidney disease patients.

Universal Display Corp., up $1.93 to $30.13

The organic LED technology company signed a technology licensing agreement with LG Display Co. for OLED display products.