In corporate news, Splunk ( SPLK) reported a narrower-than-expected fiscal second-quarter loss on Thursday with revenue 12% ahead of analysts' estimates. The data software specialist also raised its revenue outlook for the full year to between $183 million and $186 million, up from a prior range of $174 million to $177 million. Shares were surging more than 15.5%. OmniVision Technologies ( OVTI ), the maker of advanced digital imaging products, said it expects non-GAAP earnings of 21 to 37 cents a share for its fiscal second quarter ending in October on revenue of $355 million to $390 million. Analysts are currently looking for a profit of 33 cents a share in the quarter on revenue of $268.6 million. Shares gained nearly 13%. Zumiez ( ZUMZ ), the specialty retailer, provided weak guidance for its fiscal third quarter, sending its shares down 9.4%. SAIC Inc ( SAI ) shares popped 3.4% after the government technology contractor said that it will split its business into two independent public companies.