NEW YORK (AP) — Stocks that moved substantially or traded heavily Friday on the New York Stock Exchange and Nasdaq Stock Market:
NYSE
YPF SA., up 72 cents at $11.17
Mexican billionaire Carlos Slim acquired an 8.4 percent stake in the oil and gas producer, according to a government filing.
AAR Corp., down $1.23 at $10.34
The defense contractor posted fourth-quarter results and a 2013 earnings outlook below what Wall Street analysts expected.
GameStop Corp., up 9 cents at 17.83
The video game seller's stock fell to a nearly two-and-a-half year low on a report that showed video game sales dropped last month. Shares recovered by Friday afternoon.
Navistar International Corp., up $2.12 at $29.95
Hedge fund MHR Fund Management LLC disclosed in government filings that it is now the truck and engine maker's largest shareholder.
Westinghouse Air Brake Technologies Corp., up $3.06 at $73.23
The locomotive, subway and bus parts maker said that it will buy rail parts maker Mors Smitt for about $88 million.
Nasdaq
II-VI Inc., down $2.35 at $16.25
The manufacturer cut its fiscal fourth-quarter outlook, citing the continued drop in prices of a key material it makes.
Dyax Corp., down 18 cents at $1.96
The drug maker stopped a clinical trial of its angioedema drug Kalbitor because it did not work better than a placebo.
AsiaInfo-Linkage Inc., up $1.71 at $12.79
Reuters reported that several private equity firms are interested in buying the Chinese telecommunications software provider.
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