jiM's got the right idea.
Diversification is the key but the balance of investments has to correspond with real human needs such as food, housing, clothing, health care, transportation, etc.
My pension fund is about equally split among bonds, foreign investment, and domestic investment.
I have 20% of my investment portfolio in energy companies because I realize that a good share of my expenses are for energy to heat my house, and power my minivan.
I look at the debt load of companies to minimize risk of the companies going bankrupt. Of course, the average S&P 500 company has twice as much debt as equity and would need twice as much bond investment as stock investment to balance the risk.
Large companies which have a diverse product line have less market risk than smaller companies.
When I get to be 70, and if I am in good health, I will buy some immediate annuities to insure against longevity.
Owning a house helps protect against real estate bubbles unless you buy during one.
Stock options (covered calls) are a risk hedge against small declines in market price.
-- Ron
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