I would agree and also disagree with what JackRab has said above. Typically low volatility trades like ETF are not going to go bankrupt as he said and so can have more invested and higher volatility trades will have more chance of bankruptcy so you should put less money into the trades. However, I disagree that you can not make 25% without risking more than 1%. I have done it many times and I risk on average 0.75% per trade.
What you are failing to understand is that typically one needs to ADJUST their amount in a trade based on volatility of the instrument being traded. A stock like X (US Steel) for example and a stock like IBM would need to take these into account because X is much more volatile than IBM. So you need to measure VOLATILITY per stock by some measure or method. I tend to use a multiple of ATR (average true range) over some time period but there are others. Once you measure VOLATILITY you can now determine your stop loss point where you feel your trade would be WRONG. At that point you need to take into account ATR. Some people use an ATR multiple from entry price and others like me use a multiple from my proposed initial stop loss point. Then that becomes my REAL stop loss point. Now I subtract my REAL stop loss price from entry price. That difference then tells me how many shares I can buy. If that is $1 then I can buy 1000 shares. But my TOTAL risk is only $1000. Yes price can gap through and past my stop loss and I can lose more than my stop allows but these are rare and one of many reasons why I choose 0.75% risk.
Volatility determines how much of your account you can invest per trade because that volatility partly determines my REAL stop loss. The more volatile the stock the wider the stop....and the fewer shares I can buy. Sometimes I can have 70% of my account in a trade but only risk 0.75%. Other times I may have 5% of my account in a trade but still risk 0.75%. Lastly, the LATER you enter a trade from your stop the further your entry price will be away from the stop and obviously the wider your stop so the fewer shares you buy.
Also the reason for the 1% rule is because of downside protection when you have multiple losses especially on a losing streak. If you are down 10 trades in a row you are at $90k when risking 1%. To get back to even you need to make 11%. (Not too bad). When you risk 2% let's say then you have $80k and need to now male back 25% just to break even. That is harder than it sounds. So the 1% rule is for drawdown protection. Volatility rule is for per trade stop loss risk management and determining position sizing for THAT individual trade.
I hope this helps. Good luck in learning. It never stops.
Eganon
This is exactly how to trade, IMO it would qualify as one of the best posts I've read on ET.
Great job.
