European stocks ended a volatile trading session mostly higher, with the Stoxx Europe 600 index logging a third quarter of gains.

U.S. stocks closed lower on Friday, but still posted sizable weekly and quarterly gains. Monthly performance was mixed. Real estate shares, utilities and consumer discretionary stocks attracted buyers. Technology stocks were the best performers over the past quarter, up 12%. The benchmark index gained 0.8% over the week and was flat for the month. Over the quarter, the index was up 5.5%, advancing for a sixth straight quarter.

The second quarter kicked off with a lukewarm start for Asian equities on Monday, with markets wavering between neutral and slight gains, ahead of Donald Trump's summit with China's president later this week.