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IT services firm Cognizant's revenue misses

May 2 (Reuters) - Cognizant Technology Solutions Corp missed analysts' estimates for quarterly revenue, as sales in its biggest unit of financial services fell.

Revenue rose 5.1 percent to $4.11 billion, but missed estimates of $4.17 billion.

Shares closed down 7.7 percent at $66.61.

The company's results were available ahead of the scheduled release time.

(Reporting by Sayanti Chakraborty in Bengaluru)