Fund execs expect a hot summer of range trading

It's not only the football World Cup that will provide sharp ups and downs this summer -- markets are likely to give investors a similarly intense roller-coaster ride, argue fund executives and analysts. For one thing, Spain's debt problems seem to be worsening -- as funding problems grow for the country's companies and banks -- and several market participants recommend a wait-and-see approach before piling into Asian stocks again. Especially as there appears little chance of Asia-Pa…