Quote from stock_trad3r:
With so little tolerance for downside don't expect to see much upside either. Without risk there is no reward.
Ok here's my opinion on that little gem. Let's say you have 5 great trade setups per year, and 15 reasonable ones. That seems common for a decent medium-term trader or fund, there are normally at least 5 very big trends or reversals per year, and three times as many lesser but still tradable moves. Let's say you risk 2% on the great trades and 0.5% on the others.
Let's say you get 60% of your trades right, 20% neutral/flat, 20% wrong. Let's assume winning trades make 3 times your risk (pretty normal, sometimes they make 5 times or more). This is what you make:
5 great trades, 2% risk on each. 1 loses 2%, 1 is flat, 3 win 6% each. Total return 16%.
15 decent trades avg 15, risk 0.5%. 9 win for 1.5% gains each, 3 break even, 3 lose 0.5% each. Total return is 12%.
16%+12% = 28% per annum. That's risking 0.5% per trade, and 2% on high conviction trades. And due to compounding, you might be more like 30% per annum.
What's your max drawdown this way? Let's say ALL your trades are losers. You lose 7.5% from the normal trades and 10% from the great setups, total 17.5%. And in fact it will be a bit lower due to trading smaller during losing streaks, so let's say 15%.
So your expected return with a 60% win rate and 3:1 risk/reward ratio is 30% per annum, with 15% absolute worst case drawdown in a year, and more likely drawdown in a bad year of half that.
If you can make 30% per annum with single-digit drawdowns, you are going to be rich, as long as you can survive long enough to benefit from compounding.
Thus, the only reason to risk any more than this 0.5-2% level is if i) you don't have long to succeed (terminally ill, very old etc) ii) you have such an amazing trade setup that the chance of losing is low and the payoff gigantic (e.g. Paulson housing bet, dot.com crash etc) iii) you are very greedy/impatient and want to risk failure to get rich a bit quicker.