India, May 22 -- European stocks traded lower on Thursday as investors reacted to a U.S. Treasury sell-off, mixed regional data and some disappointing earnings.

30-year U.S. Treasury yields topped 5.09 percent on deficit fears tied to stalled U.S. budget bill negotiations.

In economic releases, Euro zone's private sector returned to contraction in May, with PMI Composite falling from 50.4 to 49.5, hitting a six-month low.

The Ifo institute's business climate index for Germany rose to 87.5 in May from 86.9 in April, thanks to less gloomy expectations.

France's manufacturing sentiment index dropped to 97 in May from 100 in April on deteriorating global orders and personal production expectations, survey data from the statistical office IN...