European stock indices soared on Monday and the pound jumped against the dollar as the perceived risk of a U.K. retreat from the European Union lessened.

In early trading the FTSE 100 was up 2.29% at 6,159.03. The Dax jumped 2.84% to 6,159.03 in Frankfurt and the Cac 40 gained 2.82% to 4,311.92 in Paris.

The pound was at its highest level against the dollar in three weeks. It was recently up 1.70% against the U.S. currency, buying $1.4602. S&P 500 mini futures were recently down 0.01% and Brent Crude was up 1.65% at $49.98 per barrel.

Financial stocks including insuer Aviva and miners including Anglo American led the gainers in London. On the Dax Commerzbank (CRZBY) and exporters including BMW (BAMXY) and Daimler (DDAIY) , (DDAIF) led the charge.

After the resumption of campaigning on Sunday by both sides of the "Brexit" campaign before Thursday's referendum, a Financial Times poll-of-polls put both the "remain" and "leave" sides neck and neck, with 44% of the vote. The "leave" side lost its lead over "remain" last week after the shock murder of pro-EU lawmaker Jo Cox. The suspect was apparently motivated by far-right ideology.

Meanwhile, U.K. car industry group Society of Motor Manufacturers and Traders backed the "remain" camp. And Diageo (DEO) CEO Ivan Menezes urged continued membership of the bloc in letter to staff.

Meanwhile, Germany's Federal Statistical Office said producer price deflation lessened in May, with prices declining by 2.7% on the year, less than the 3.1% decrease in April. On the month prices rose 0.4%, compared with a 0.1% increase in April, according to the Federal Statistical Office figures. The annual price plunge continued to be led by energy prices. Excluding those, prices were down 0.8% from May 2015, and were up 0.2% on the month.

In Mumbai, the S&P BSE 100 was recently up 0.62% at 8,335.33 after news of the surprise departure of reformist central bank governor Raghuram G. Rajan. The dollar was recently up 0.43% against the rupee, buying Rs67.3737.

In Hong Kong, the Hang Seng closed up 1.72% at 20,516.21 and on mainland China the CSI 300 composite index edged up 0.07% higher to 3,112.67.

In Tokyo, the Nikkei 225 gained 2.34% to 15,965.30. The Topix closed up 2.27% at 1,279.19.