Gallick
"Fair point you could reduce to 2 or 3% per trade, but that means that you may have up to 25 trades open or coming up. IMHO that is too many to keep track of. The 4% level would risk only 48% of your entire portfolio if everything went belly up."
Hmmm not sure that's right - but this is why no single part of a strategy should be taken in isolation.
Suppose, for example, you were to consider buying BT.A at current levels.
Suppose your stop was 216 and your target 235. At an entry price of 220, you'd be looking at risking losing 4 points (220 minus 216) against gaining 15 (235 minums 220) - roughly 4 to 1 risk reward. If you decided this were acceptable and were trading normal shares, then with a pot of, say 10k, and a maximum risk of say 2% of your capital, you would be prepared to lose 2% of 10k= 200. If you're risking 4 points for 200 then you're sized at 50 a point - ie 5,000 shares. Without margin, these would cost slightly more than your entire pot - and you'd have one share to watch.
On a margined account (eg CFD) with, say 10%, then the exposure is the same, but you'd be able to hold 10 similar sized positions, so you'd be watching 10 shares.
I'm not sure where your 25 comes from. Is that spread betting? or very high margin?
Moneyplus - perhaps you might add "Position Sizing" and "Margin" to the bullet list, under money management.
Gausie