Pursuits

Altera, Extreme Networks, Infoblox, Motorcar: U.S. Equity Movers

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Shares of the following companies had unusual moves in U.S. trading. Stock symbols are in parentheses, and prices are as of 4 p.m. in New York.

Altera Corp. (ALTR US) slipped 8.4 percent, the most since December 2008 to $35.25. The maker of programmable semiconductors reported first-quarter sales of $383.8 million, trailing the average analyst estimate of $422.5 million in a Bloomberg survey.