New York, July 29th (TradersHuddle.com) - Unusual high volume detected on shares of Willis Group Holdings PLC (NYSE:WSH), early in the trading session. Willis Group is currently trading lower by 5.51%, so definitely the sellers in control, as the stock's volume is already above average.

Willis Group Holdings PLC (NYSE:WSH) is an insurance broker. The Company offers professional insurance, reinsurance, risk management, financial and human resource consulting and actuarial services to corporations, public entities and institutions around the world.

Willis Group has already traded 1.504 times its 3-month average volume, and has calculated support and resistance at $29.53 and $32.15 respectively. Traders like to use volume as their lie detector for price action moves through predefined trading ranges.

The overall market index S&P 500 is trading lower by -0.37% from its previous trading close, which means that Willis Group stock is underperforming the overall market.