Heavy trading predicted around Brexit vote

New York

US stock markets could see heavy trading and increased volatility as investors position for this week's referendum on whether Britain remains in the European Union (EU).

The June 23 vote could have big implications for the global economy and US stocks. Add to this the annual rebalancing of the FTSE Russell indexes, set to go into effect a day after the vote, and it makes for a busy trading week.

Friday could be t…