I've been trading the past few months with 250k bp, 500 share max per position, which I assume is not very much leverage at all, compared to the guys who have 1 or 2 mil and 5k max shares -- yet it seems like I am at the top or bottom of the p/l list almost each and every day at the office where I trade. I'm primarily an event-driven/news trader, when earnings season hits, mid-four figure days are pretty common. On 500 share max position limit, how does this rate? Additionally, how much does one's profitability rate in negotiating commissions? Doesn't a trader's longevity become a factor, even if one's volume is not extraordinary?