Higher returns demand deeper nerves.
— the only free lunch is diversification (Markowitz)
The basic law
Investments with higher expected come with higher . Always. Anyone telling you otherwise is selling you something — usually a fund that hasn't existed long enough for the bad year to show up. The good news: you get to choose where on the curve you sit, and you don't have to be all-in any single place.
Plot the menu
The chart below maps the major asset types by historical (how wildly they swing) and expected (the average prize). Drag the slider to set your tolerance — the band shows which assets fit comfortably, which would test your patience, and which would probably make you sell at the worst possible moment.
The lesson hidden in the chart
There is no asset that gives you stock-like with cash-like calm. Anyone who promises that is either lying or doesn't yet know they're wrong. The best you can do — and it is genuinely powerful — is build a basket of different things that don't all panic at the same time. That is the entire idea of a diversified .
The free lunch
is the closest thing finance has to magic. Spread the same total amount across many uncorrelated assets, and the basket has lower than any single piece — without giving up much expected . Harry Markowitz won a Nobel Prize for this insight.