Recently I have worked on one study. I watched questions on quora.com and I saw questions as :
Do only 1% of forex traders make a profit?
What percentage of traders lose money?
Why Do 90% Of Traders Consistently Lose Money?
On website financemagnates.com we can see excellent reports – “Forex Profitability Report”. (See example : http://www.financemagnates.com/forex/brokers/exclusive-us-q1-2015-forex-profitability-report-more-accounts-and-profits/)
I monitor last several years this reports not just for US. And I have simple answer : 70% of Forex traders Lose money during the year. 30% make profit..
If we look retail forex accounts at most famous brokers we will see yearly statistics around 70% losing accounts. Last couple years for few percent traders are better in profit. This is good.
Of course more than 90% of losing traders are new traders, without risk management.