Brokerage statistic

I have been searching for brokers market statistics and got nothing at all.

I would be very glad if somebody links me answers:
What is the biggest broker worldwide? ( Year turnover, accounts, capitalization)
What is the biggest broker in US?

Have a feeling, despite two different question, the answer will be the same.
Will be very appreciate for any analyze, statistic data!

John

http://forexmagnates.com/top-forex-b...traded-volume/
http://forexmagnates.com/us-forex-br...ty-comparison/

Thank you!

According to the first link the biggest broker is FXCM?

you can ask the guy who compiled that report ...... in the comment area. note that forex brokers do business all over the world, not just USA. only the numbers for US accounts are reported to CFTC/NFA.

Any ideas what % has USA market in World market?