Trading in the U.S. index futures suggests that Wall Street stocks may swoon on Monday, as risk aversion tightens its grip on the markets. With the Chinese market volatility continuing and the uncertainty surrounding a Fed rate hike increasing, traders may be all eyes on a few market moving economic data scheduled for the week. Commodities are lower across the board and the dollar is mixed. A regional business barometer due for the day may also give some direction to the markets.