Zaxon
The voice of reason
- Joined
- 5 August 2011
- Posts
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With the recent, sharp drop in the share market, I thought it would be a good time to revisit risk management. Specifically, I'm looking from a medium time horizon: holding stocks for a few months.
Break-even Stops
Traders have the concept of break-even stops. They're designed to make you feel good, because should you hit that stop, you haven't lost any money. But I'm wondering with medium term investing, do BE stops really make as much sense?
Consider this: $100k into share XYZ. After a few months (or years), the share has had a nice run up, and is now worth $150k. You have in place a BE stop. Good! You can't lose any money! But if it hits that stop, you've lost 50 thousand dollars: 50% of your wealth (in that stock). So my question is whether the concept of BE stops is even useful in longer term investing? (Hopefully you'd have other stops in place anyway.)
Whole Portfolio Risk
Secondly, let's assume, because you're a longer term investor, you use a trailing loss of 20% (for the simple purpose of this discussion). You allocate 5% of your portfolio per stock. 20% of 5% = 1%. That's 1% maximum loss (of your portfolio) per stock. Sounds safe! But then the market crashes, and all your shares lose 20% together. Suddenly 1% estimated risk becomes 20% actual risk. The question is, is there a way of mitigating this? I don't believe there is (for the average, vanilla investor), but I'm interested to hear your thoughts.
Break-even Stops
Traders have the concept of break-even stops. They're designed to make you feel good, because should you hit that stop, you haven't lost any money. But I'm wondering with medium term investing, do BE stops really make as much sense?
Consider this: $100k into share XYZ. After a few months (or years), the share has had a nice run up, and is now worth $150k. You have in place a BE stop. Good! You can't lose any money! But if it hits that stop, you've lost 50 thousand dollars: 50% of your wealth (in that stock). So my question is whether the concept of BE stops is even useful in longer term investing? (Hopefully you'd have other stops in place anyway.)
Whole Portfolio Risk
Secondly, let's assume, because you're a longer term investor, you use a trailing loss of 20% (for the simple purpose of this discussion). You allocate 5% of your portfolio per stock. 20% of 5% = 1%. That's 1% maximum loss (of your portfolio) per stock. Sounds safe! But then the market crashes, and all your shares lose 20% together. Suddenly 1% estimated risk becomes 20% actual risk. The question is, is there a way of mitigating this? I don't believe there is (for the average, vanilla investor), but I'm interested to hear your thoughts.