Brendan Burgess
Founder
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I have always argued that volatility is not a measure of risk for a long term buy and hold investor like myself. It might be a useful measure for a day trader.
John Kay had a good article in the FT at the weekend about the new European regulations.
Risk, the retail investor and disastrous new rules
The measure of risk used in the Kid is essentially the historic volatility of weekly returns. Or to put it another way — if the fund managers had been stealing your money, an investment with them would be described as “low risk” so long as they were stealing it at a more or less constant rate.
But this model does not represent what ordinary people mean by risk. According to the Oxford English Dictionary, risk is “exposure to danger, the possibility that something unpleasant or unwelcome will happen”. This is very different from the financial economist’s equation of risk with volatility.
No one talks about the “risk” of winning the National Lottery, or the “risk” that their favoured horse will be first past the post. They don’t even talk about the risk of not winning the National Lottery, because sensible people don’t really expect to win. The modeller’s approach confuses certainty and security. The financial economist who knows he is going to be hanged tomorrow has certainty, but not security. He knows that something unpleasant and unwelcome will happen and it is more, not less, unpleasant and unwelcome because it is certain. For the intelligent investor, the unpleasantness or unwelcome outcome that they fear is that their investment strategy fails to meet their reasonable expectations. And that is the relevant concept of investment risk.
John Kay had a good article in the FT at the weekend about the new European regulations.
Risk, the retail investor and disastrous new rules
The measure of risk used in the Kid is essentially the historic volatility of weekly returns. Or to put it another way — if the fund managers had been stealing your money, an investment with them would be described as “low risk” so long as they were stealing it at a more or less constant rate.
But this model does not represent what ordinary people mean by risk. According to the Oxford English Dictionary, risk is “exposure to danger, the possibility that something unpleasant or unwelcome will happen”. This is very different from the financial economist’s equation of risk with volatility.
No one talks about the “risk” of winning the National Lottery, or the “risk” that their favoured horse will be first past the post. They don’t even talk about the risk of not winning the National Lottery, because sensible people don’t really expect to win. The modeller’s approach confuses certainty and security. The financial economist who knows he is going to be hanged tomorrow has certainty, but not security. He knows that something unpleasant and unwelcome will happen and it is more, not less, unpleasant and unwelcome because it is certain. For the intelligent investor, the unpleasantness or unwelcome outcome that they fear is that their investment strategy fails to meet their reasonable expectations. And that is the relevant concept of investment risk.