How about safe investments like bonds?

by Larry Haverkamp

Bonds are a good investment for two reasons.

First, they carry less risk of default. A company that hits on hard times must pay off its bondholders first and stockholders last.

Second, bonds are less risky because of what economists call co-variance.
It is like sound waves created by two loud noises. It is possible to structure the waves so that when they meet, they cancel one another to produce silence. It is incredible but true.

In the same way, volatile stocks and bonds can be combined into a new portfolio to produce much less volatility than found in either the stocks or the bonds individually. It is the magic of diversification.