The CFTC has just released their latest net capital figures. This is the current state of the U.S. retail fx industry:

Financial Data for FCMs

Advanced Markets $20,722,000
Easy Forex $20,928,000
Ikkon Royal $21,247,000
MB Trading $21,360,000
Alpari $22,312,000
Forex Club $25,427,000
CMS Forex $29,788,000
Interbank FX $35,611,000
PFG $36,465,000
FX Solutions $48,262,000
FXCM $63,999,000
GFT Forex $79,368,000
Gain Capital $98,125,000
Oanda $159,062,000