Quote from Donkell:
Nana Trader
"I will quite daytrading today, if someone can
prove to me (reliable source with data) that it's 5%
that make money over long term?"
I have never seen a broker put out those statistics, but from what I gather it's probably true.
As for proof, what brokers, who makes their money from your trading, are going to tell you, 95% or even over half lose money, and expect you to sign up. I don't think you're going to hear it.
There probably is a place or places that have those statistics but they'll be darn hard to find.
http://faculty.haas.berkeley.edu/odean/papers/returns/returns.html