Get out now. $300/day consistently from a $10,000 account? If he could really do that, he would be BY FAR the most sucessful trader/financier in the world, and certainly wouldn't need or want to talk to you. Do the math, modestly compound those returns and extrapolate them out a few years, and he is worth more than the U.S. GNP. I would find out whether he is registered in any way with NFA, NASD or anyone, as those claims are ridiculous and at least probably actionable. The fact that he opened a highly leveraged trading account for an amount that was a sizeable portion of your annual income/net worth is also legally (and certainly ethically) problematic, assuming that you gave him accurate figures.
Jessie
Jessie