Yes, I have done it for a short time, but this was more than 10 years ago, and the market has changed so dramatically in that time that I consider day traders to be mainly associated with the churn folks now. They only trade to generate a share buy/sell commission.
I started out with E-trade, set up a brokerage account(proxy of course) and funded it with what I was going to seed. After I was up for 6 months, I asked and was granted a decent line of credit with E-trade securities, after the usual credit check, and pledging certain assets.
Back then, there was no twitter feed, and no social media presence. I can tell you today that there are dozens if not hundreds of automatic algorithms which are used by the big houses to do massive trades based on complete spec. This is how the market has changed in the past 10 years where I won't touch day trading anymore. That is not a cautionary tale, because you don't want to hear that, it is why I chose to leave.
My success rate was no better and no worse than others of the same era. I had a few quarters where I did real well and I had one quarter which was disastrous and another quarter which was simply bad. All in all, when I got right down to it, I was making the brokerage house rich, even at very small commissions on high volume trades and I wasn't really making much per hour even though I commanded large volumes of shares, and money at times.
I had to go back and find the article from 3 years ago that confirmed my spidy sense was the right thing.
http://www.usatoday.com/story/theov...ey-associated-press-hack-white-house/2106757/
When the AP twitter account was hacked and a false story was put out, with no other confirmation just a twitter feed, the Dow went down 128 points in a matter of minutes. the bond market also went into a tailspin, and I later confirmed from some folks at E-trade that many big players in the market had automatic twitter and FB, and other social media crawls that would react to news and begin trading(sell) ahead of the curve.
This scared the hell out of me, and if you don't keep up minute by minute on the goings on of the workings of the country, you will always be behind the trading curve. In fact, I will go further and say that unless you are on the floor of the exchange you are trading it's very hard to keep up with the 'big boys'. When Buffett farts, the exchanges move. I don't really like that kind of volatility, but hey - that's what the day trading game is all about. If there was no volatility, there would be no need for day trading, we could all just buy and hold.
YMMV, objects in window, don't try this at home, may cause anal leakage.
<edit: a better link to a more financial focused account of the power of twitter on the US economy:
http://www.usatoday.com/story/money...yrate-wildly-after-fake-terror-tweet/2107089/
So, the Dow went down 147 points in 3 minutes. If I recall my quick calculations that was a swing of about 700 billion dollars in trade value. Someone, somewhere got the probe, and some other guy somewhere got some nice float. Of course you can say it was all 'corrected' in a matter of minutes, but this is the life of a day trader. Easy to lose a million on paper in a matter of seconds. Not for me.>