Dr. Copper Is About to Make a Diagnosis. Here’s How to Keep Your Portfolio Healthy.

For decades, we market technicians have treated copper (HGU26) as the ultimate barometer for the global economy. It isn't called "Dr. Copper" for nothing; the industrial metal has earned an honorary PhD in economics because its demand is deeply intertwined with infrastructure, manufacturing, and global construction as well.

When copper is rising, the global economic engine is typically expanding. When it rolls over, a broader economic slowdown is usually right around the corner.