I a trader in China. I find WTS overcharged me fees. If you also traded using WTS system, check SEC fees and ECN. My SEC now 0.000036/$1m. Other friend through another WTS broker got charged 0.000026/$1m. SEC lowered Sept 0.0000127/$1m. Other fees are also randomly charged, such as NYSE and NSDQ. I got charged both when trading Nasdaq stocks! I look for an honest broker. Please help.