400k over last 24 mos. I have taken a lot of time off. I am up 163k this year.That doesn't include dividends and interest.
I do think that one can trade these arb deals by placing a lot on orders and catching gaps in stock prices, then hedging against the other stock.
In terms of a percentage of capital, I don't really look at it this way. I try to estimate a worst case loss in which my risk is limited to $150,000. I try to stick to low risk deals, and leverage them up. For example, BAC/FBF is trading around 10 cts. I have it on in size as all approvals are in. I'm willing to risk a lot to make a little on a deal with little risk.