ATLANTA - Nova Corp. said second-quarter operating income rose 8% but a massive charge dragged the company to a net loss.

Nova, which warned in late July that profits would fall short of expectations, said it earned $22.1 million before the charge, up 7.8% from $20.5 million a year ago. On a diluted per-share basis, earnings were 31 cents on revenues of $405.8 million, up from 28 cents a year earlier.

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